2012 United States Senate elections

Last updated

2012 United States Senate elections
Flag of the United States.svg
  2010 November 6, 2012 2014  
2013 (MA, NJ)  

33 of the 100 seats in the United States Senate
51 seats needed for a majority
 Majority partyMinority party
  Harry Reid official portrait 2009 (3x4b).jpg Mitch McConnell official portrait 112th Congress.jpg
Leader Harry Reid Mitch McConnell
Party Democratic Republican
Leader's seat Nevada Kentucky
Seats before5147
Seats after5345
Seat changeIncrease2.svg 2Decrease2.svg 2
Popular vote49,988,282 [1] 39,128,301 [1]
Percentage53.4%41.8%
Seats up2110
Races won238

 Third party
 
Party Independent
Seats before2 [a]
Seats after2 [b]
Seat changeSteady2.svg
Popular vote961,284 [1]
Percentage1.0%
Seats up2
Races won2

2012 United States Senate elections results map.svg
Results of the elections:
     Democratic gain     Republican gain     Independent gain
     Democratic hold     Republican hold     Independent hold
     No election

Majority Leader before election

Harry Reid
Democratic

Elected Majority Leader

Harry Reid
Democratic

The 2012 United States Senate elections were held on November 6, 2012, with 33 of the 100 seats in the Senate, all Class 1 seats, being contested in regular elections whose winners would serve 6-year terms beginning January 3, 2013, with the 113th Congress. Democrats had 21 seats up for election, plus 1 Independent, and 1 Independent Democrat, while the Republicans only had 10 seats up for election. The presidential election, elections to the House of Representatives, elections for governors in 14 states and territories, and many state and local elections were also held on the same day.

Contents

The Democrats gained Republican-held seats in Massachusetts and Indiana and one from an Independent Democrat in Connecticut, leaving them with a total of 53 seats. Additionally, they held open seats in Hawaii, New Mexico, North Dakota, Virginia, and Wisconsin. The Republicans, despite losing 2 of their seats, picked an open seat in Nebraska up and retained open seats in Arizona and Texas, ending with a total of 45 seats. The Independents retained a seat in Vermont and gained an additional seat from the Republicans in Maine, bringing their total to 2 seats. Both Independents would caucus with the Democrats, forming a majority caucus with a combined total of 55 seats.

As of 2024, this was the last time the Democrats won seats in Florida, Indiana, Missouri, and North Dakota. It was also the last time the Republican Party won a seat in Nevada. The Democrats would not win control of the Senate again until 2020 [c] and would not win an outright majority again until 2022. This is also the last time a Democrat flipped a Senate seat in a state that they lost in the concurrent presidential election, and the last time that any party has done so.

Additionally, this was the first time since 1936 that a 2-term Democratic presidential candidate had Senate coattails on both occasions. (Although Franklin Roosevelt won third and fourth terms in 1940 and 1944, respectively, he lost Senate seats on both occasions.) This was also the first time since 1964 in which either party had to defend more than two-thirds of the Senate seats up for grabs but managed to make net gains. [2] [3] As of 2024, this is the last election cycle in which an incumbent senator lost renomination (Richard Lugar of Indiana).

Results summary

53245
DemocraticIndependentRepublican

Shading indicates party with largest share of that line.

PartiesTotal
Democratic Republican Independent Libertarian Independence Green Others
Before these elections51472100
Not up303767
Class 2 (20082014)201333
Class 3 (20102016)102434
Up2110233
Class 12110233
Incumbent retired63110
Held by same party527
Replaced by other partyDecrease2.svg 1 Independent replaced by Increase2.svg 1 Democrat
Decrease2.svg 1 Republican replaced by Increase2.svg 1 Independent
Decrease2.svg 1 Democrat replaced by Increase2.svg 1 Republican
3
Result63110
Incumbent ran157 [d] [e] 123
Won re-election155121
Lost re-electionDecrease2.svg 1 Republican replaced by Increase2.svg 1 Democrat1
Lost renomination
but held by same party
Steady2.svg
Lost renomination
and party lost
Decrease2.svg 1 Republican replaced by Increase2.svg 1 Democrat1
Result175123
Total elected238233
Net gain/lossIncrease2.svg 2Decrease2.svg 2Steady2.svg2
Nationwide vote49,988,28239,128,301961,284956,745211,794195,2002,119,71493,561,320 [1]
Share53.43%41.82%1.03%1.02%0.23%0.21%2.27%100%
Result53452100
End of this Congress 51472100

Change in composition

Before the elections

Map of retirements:

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Republican incumbent
Democratic incumbent
Independent incumbent
Democratic incumbent retired
Republican incumbent retired or lost renomination
Independent incumbent retired 2012 United States Senate elections open seats map.svg
Map of retirements:
  Republican incumbent
  Democratic incumbent
  Independent incumbent
  Democratic incumbent retired
  Republican incumbent retired or lost renomination
  Independent incumbent retired
D1D2D3D4D5D6D7D8D9D10
D20D19D18D17D16D15D14D13D12D11
D21D22D23D24D25D26D27D28D29D30
D40
Neb.
Retired
D39
Mont.
Ran
D38
Mo.
Ran
D37
Minn.
Ran
D36
Mich.
Ran
D35
Md.
Ran
D34
Hawaii
Retired
D33
Fla.
Ran
D32
Del.
Ran
D31
Calif.
Ran
D41
N.J.
Ran
D42
N.M.
Retired
D43
N.Y.
Ran
D44
N.D.
Retired
D45
Ohio
Ran
D46
Pa.
Ran
D47
R.I.
Ran
D48
Va.
Retired
D49
Wash.
Ran
D50
W.Va.
Ran
Majority →D51
Wis.
Retired
R41
Mass.
Ran
R42
Miss.
Ran
R43
Nev.
Ran
R44
Tenn.
Ran
R45
Texas
Retired
R46
Utah
Ran
R47
Wyo.
Ran
I2
Vt.
Ran
I1
Conn.
Retired
R40
Maine
Retired
R39
Ind.
Ran
R38
Ariz.
Retired
R37R36R35R34R33R32R31
R21R22R23R24R25R26R27R28R29R30
R20R19R18R17R16R15R14R13R12R11
R1R2R3R4R5R6R7R8R9R10

After the elections

D1D2D3D4D5D6D7D8D9D10
D20D19D18D17D16D15D14D13D12D11
D21D22D23D24D25D26D27D28D29D30
D40
N.J.
Re-elected
D39
Mont.
Re-elected
D38
Mo.
Re-elected
D37
Minn.
Re-elected
D36
Mich.
Re-elected
D35
Md.
Re-elected
D34
Hawaii
Hold
D33
Fla.
Re-elected
D32
Del.
Re-elected
D31
Calif.
Re-elected
D41
N.M.
Hold
D42
N.Y.
Re-elected
D43
N.D.
Hold
D44
Ohio
Re-elected
D45
Pa.
Re-elected
D46
R.I.
Re-elected
D47
Va.
Hold
D48
Wash.
Re-elected
D49
W.Va.
Re-elected
D50
Wis.
Hold
Majority →D51
Conn.
Gain
R41
Tenn.
Re-elected
R42
Texas
Hold
R43
Utah
Re-elected
R44
Wyo.
Re-elected
R45
Neb.
Gain
I2
Maine
Gain
I1
Vt.
Re-elected
D53
Mass.
Gain
D52
Ind.
Gain
R40
Nev.
Elected [f]
R39
Miss.
Re-elected
R38
Ariz.
Hold
R37R36R35R34R33R32R31
RR22R23R24R25R26R27R28R29R30
R20R19R18R17R16R15R14R13R12R11
R1R2R3R4R5R6R7R8R9R10
Key:
D# Democratic
I# Independent
R# Republican

Race summary

Special elections during the 112th Congress

There were no special elections during the 112th Congress.

Elections leading to the next Congress

In these elections, the winners were elected for the term beginning January 3, 2013; ordered by state.

All of the elections involved the Class 1 seats.

StateIncumbentResultsCandidates [4]
SenatorPartyElectoral history
Arizona Jon Kyl Republican 1994
2000
2006
Incumbent retired. [5]
Republican hold.
California Dianne Feinstein Democratic 1992 (special)
1994
2000
2006
Incumbent re-elected.
Connecticut Joe Lieberman Independent
Democrat
1988 [g]
1994
2000
2006
Incumbent retired. [6]
Democratic gain.
Delaware Tom Carper Democratic 2000
2006
Incumbent re-elected.
  • Green check.svgY Tom Carper (Democratic) 66.4%
  • Kevin Wade (Republican) 29.0%
  • Alex Pires (Independent) 3.8%
  • Andrew Groff (Green) 0.8%
Florida Bill Nelson Democratic 2000
2006
Incumbent re-elected.
Others
  • Chris Borgia (Independent) 1.0%
  • Bill Gaylor (Independent) 1.5%
Hawaii Daniel Akaka Democratic1990 (appointed)
1990 (special)
1994
2000
2006
Incumbent retired. [7]
Democratic hold.
Indiana Richard Lugar Republican 1976
1982
1988
1994
2000
2006
Incumbent lost renomination. [8]
Democratic gain.
Maine Olympia Snowe Republican 1994
2000
2006
Incumbent retired. [9]
Independent gain.
Others
  • Danny F. Dalton (Independent) 0.8%
  • Andrew Ian Dodge (Libertarian) 0.8%
Maryland Ben Cardin Democratic 2006 Incumbent re-elected.
Massachusetts Scott Brown Republican 2010 (special) Incumbent lost re-election.
Democratic gain.
Michigan Debbie Stabenow Democratic 2000
2006
Incumbent re-elected.
Others
  • Scotty Boman (Libertarian) 1.8%
  • Harley Mikkelson (Green) 0.6%
  • Richard Matkin (Constitution) 0.6%
  • John Litle (Natural Law) 0.2%
Minnesota Amy Klobuchar DFL 2006 Incumbent re-elected.
Others
  • Tim Davis (Grassroots) 1.1%
  • Michael Cavlan (Open Progressive) 0.5%
Mississippi Roger Wicker Republican2007 (appointed)
2008 (special)
Incumbent re-elected.
  • Green check.svgY Roger Wicker (Republican) 57.2%
  • Albert N. Gore Jr. (Democratic) 40.6%
Others
  • Thomas Cramer (Constitution) 1.2%
  • Shawn O'Hara (Reform) 1.0%
Missouri Claire McCaskill Democratic 2006 Incumbent re-elected.
Montana Jon Tester Democratic 2006 Incumbent re-elected.
Nebraska Ben Nelson Democratic 2000
2006
Incumbent retired. [10]
Republican gain.
Nevada Dean Heller Republican2011 (appointed)Interim appointee elected.
New Jersey Bob Menendez Democratic2006 (appointed)
2006
Incumbent re-elected.
Others
  • Ken Kaplan (Libertarian) 0.5%
  • Ken Wolski (Green) 0.5%
New Mexico Jeff Bingaman Democratic 1982
1988
1994
2000
2006
Incumbent retired. [11]
Democratic hold.
New York Kirsten Gillibrand Democratic2009 (appointed)
2010 (special)
Incumbent re-elected.
Others
  • Colia Clark (Green) 0.6%
  • Chris Edes (Libertarian) 0.5%
  • John Mangelli (Common Sense) 0.3%
  • Write-ins 0.03%
North Dakota Kent Conrad Democratic-NPL 1986
1992 (retired)
1992 (special)
1994
2000
2006
Incumbent retired. [12]
Democratic-NPL hold.
Ohio Sherrod Brown Democratic 2006 Incumbent re-elected.
Pennsylvania Bob Casey Jr. Democratic 2006 Incumbent re-elected.
  • Green check.svgY Bob Casey Jr. (Democratic) 53.7%
  • Tom Smith (Republican) 44.6%
  • Rayburn Douglas Smith (Libertarian) 1.7%
Rhode Island Sheldon Whitehouse Democratic 2006 Incumbent re-elected.
Tennessee Bob Corker Republican 2006 Incumbent re-elected.
  • Green check.svgY Bob Corker (Republican) 64.9%
  • Mark Clayton (Democratic) 30.4%
Others
  • Martin Pleasant (Green) 1.7%
  • Shaun Crowell (Libertarian) 0.9%
  • Kermit Steck (Constitution) 0.8%
Texas Kay Bailey Hutchison Republican 1993 (special)
1994
2000
2006
Incumbent retired. [13]
Republican hold.
Others
  • John Jay Myers (Libertarian) 2.1%
  • David Collins (Green) 0.9%
Utah Orrin Hatch Republican 1976
1982
1988
1994
2000
2006
Incumbent re-elected.
  • Green check.svgY Orrin Hatch (Republican) 65.3%
  • Scott Howell (Democratic) 30.0%
  • Shaun Lynn McCausland (Constitution) 3.2%
  • Daniel Geery (UT Justice) 0.8%
Vermont Bernie Sanders Independent 2006 Incumbent re-elected.
Others
  • Cris Ericson (Marijuana) [h] 2.0%
  • Pete Diamondstone (Liberty Union) 0.9%
  • Peter Moss (Peace and Prosperity) 0.8%
  • Laurel LaFramboise (VoteKISS) 0.3%
Virginia Jim Webb Democratic 2006 Incumbent retired. [14]
Democratic hold.
Washington Maria Cantwell Democratic 2000
2006
Incumbent re-elected.
West Virginia Joe Manchin Democratic 2010 (special) Incumbent re-elected.
Wisconsin Herb Kohl Democratic 1988
1994
2000
2006
Incumbent retired. [15]
New senator elected.
Democratic hold.
Others
  • Joseph Kexel (Libertarian) 2.1%
  • Nimrod Y. U. Allen III (IDEA) 0.6%
  • Write-ins 0.1%
Wyoming John Barrasso Republican2007 (appointed)
2008 (special)
Incumbent re-elected.
  • Green check.svgY John Barrasso (Republican) 75.7%
  • Tim Chesnut (Democratic) 21.7%
Others
  • Joel Otto (Country) 2.5%
  • Write-ins 2%

Closest races

Elections with a margin less than 10.0%.

DistrictWinnerMargin
North Dakota Democratic0.9%
Nevada Republican1.2%
Arizona Republican3.0%
Montana Democratic4.0%
Wisconsin Democratic5.5%
New Mexico Democratic5.7%
Indiana Democratic (flip)5.7%
Virginia Democratic5.9% [i]
Ohio Democratic6.0%
Massachusetts Democratic (flip)7.5%
Pennsylvania Democratic9.1%

Final pre-election predictions

The table below gives an overview of some final predictions of the November general elections by several well-known institutes and people. While there were very few mistakes (predictions in the wrong direction; essentially only Montana and North Dakota, by both Sabato's Crystal Ball and FiveThirtyEight), FiveThirtyEight and Princeton Election Consortium had 2-4 races in the Lean categories and no tossups, whereas all other sources had at least eleven races in the middle three categories, and in particular many Tossup races.

StateIncumbentLast
election [j]
Roll Call
Nov. 5, 2012 [16]
Sabato
Nov. 5, 2012 [17]
Cook
Nov. 1, 2012 [18]
Rothenberg
Nov. 2, 2012 [19]
RCP
Nov. 5, 2012 [20]
538
Nov. 6, 2012 [21]
Princeton
Nov. 6, 2012 [22]
Winner
Arizona Jon Kyl
(retiring)
53.3% RTossupLean RTossupTossupLean RLikely RLikely R Flake
49.2% R
California Dianne Feinstein 59.4% DSafe DSafe DSafe DSafe DSafe DSafe DSafe DFeinstein
62.5% D
Connecticut Joe Lieberman
(retiring)
49.7% ILean D (flip)Lean D (flip)TossupLean D (flip)Lean D (flip)Safe D (flip)Safe D (flip) Murphy
54.8% D (flip)
Delaware Tom Carper 67.1% DSafe DSafe DSafe DSafe DSafe DSafe DSafe DCarper
64.2% D
Florida Bill Nelson 60.3% DLean DLikely DLean DLikely DLean DSafe DSafe DNelson
55.2% D
Hawaii Daniel Akaka
(retiring)
61.4% DLikely DLikely DLean DLikely DLikely DSafe DSafe D Hirono
62.6% D
Indiana Richard Lugar
(lost renomination)
87.3% RTossupLean D (flip)TossupTossupTossupLean D (flip)Likely D (flip) Donnelly
50.0% D (flip)
Maine Olympia Snowe
(retiring)
74.4% RLikely I (flip)Likely I (flip)TossupLikely I (flip)Likely I (flip)Safe I (flip)Safe I (flip) King
52.9% I (flip)
Maryland Ben Cardin 54.2% DSafe DSafe DSafe DSafe DSafe DSafe DSafe DCardin
56.0% D
Massachusetts Scott Brown 51.9% R
(2010 special) [k]
Lean D (flip)Lean D (flip)TossupTossupTossupSafe D (flip)Safe D (flip) Warren
53.7% D (flip)
Michigan Debbie Stabenow 56.9% DLikely DLikely DLikely DSafe DLikely DSafe DSafe DStabenow
58.8% D
Minnesota Amy Klobuchar 58.1% DSafe DSafe DSafe DSafe DSafe DSafe DSafe DKlobuchar
65.2% D
Mississippi Roger Wicker 55.0% R
(2008 special) [l]
Safe RSafe RSafe RSafe RSafe RSafe RSafe RWicker
57.2% R
Missouri Claire McCaskill 49.6% DLean DLean DLikely DLikely DLean DLikely DSafe DMcCaskill
54.8% D
Montana Jon Tester 49.2% DTossupLean R (flip)TossupTossupTossupLean R (flip)Lean DTester
48.6% D
Nebraska Ben Nelson
(retiring)
63.9% DLikely R (flip)Likely R (flip)Lean R (flip)Likely R (flip)Lean R (flip)Safe R (flip)Safe R (flip) Fischer
57.8% R (flip)
Nevada Dean Heller Appointed
(2011) [m]
TossupLean RTossupTossupTossupLikely RLean RHeller
45.9% R
New Jersey Bob Menendez 53.4% DSafe DLikely DLikely DSafe DLikely DSafe DSafe DMenendez
58.9% D
New Mexico Jeff Bingaman
(retiring)
70.6% DLikely DLikely DLean DLean DLikely DSafe DSafe D Heinrich
51.0% D
New York Kirsten Gillibrand 59.6% D
(2010 special) [n]
Safe DSafe DSafe DSafe DSafe DSafe DSafe DGillibrand
71.6% D
North Dakota Kent Conrad
(retiring)
68.8% DTossupLean R (flip)TossupTossupTossupSafe R (flip)Lean D Heitkamp
50.24% D
Ohio Sherrod Brown 56.2% DLean DLean DLean DLean DLean DSafe DSafe DBrown
50.7% D
Pennsylvania Bob Casey Jr. 58.7% DLean DLean DLean DLikely DLean DSafe DSafe DCasey
53.7% D
Rhode Island Sheldon Whitehouse 53.5% DSafe DSafe DSafe DSafe DSafe DSafe DSafe DWhitehouse
64.8% D
Tennessee Bob Corker 50.7% RSafe RSafe RSafe RSafe RSafe RSafe RSafe RCorker
64.9% R
Texas Kay Bailey Hutchison
(retiring)
61.7% RSafe RSafe RSafe RSafe RSafe RSafe RSafe R Cruz
56.5% R
Utah Orrin Hatch 62.6% RSafe RSafe RSafe RSafe RSafe RSafe RSafe RHatch
65.3% R
Vermont Bernie Sanders 65.4% ISafe ISafe ISafe ISafe ISafe ISafe ISafe ISanders
71% I
Virginia Jim Webb
(retiring)
49.6% DTossupLean DLean DTossupTossupLikely DSafe D Kaine
52.9% D
Washington Maria Cantwell 56.8% DSafe DSafe DSafe DSafe DLikely DSafe DSafe DCantwell
60.5% D
West Virginia Joe Manchin 53.5% D
(2010 special) [o]
Safe DSafe DLikely DSafe DLikely DSafe DSafe DManchin
60.6% D
Wisconsin Herb Kohl
(retiring)
67.3% DTossupLean DTossupTossupTossupLikely DLean D Baldwin
51.4% D
Wyoming John Barrasso 73.4% R
(2008 special) [p]
Safe RSafe RSafe RSafe RSafe RSafe RSafe RBarrasso
75.7% R

Gains and losses

Senate seats up for election in 2012
Democrat ran
Democrat retired
Republican ran
Republican retired
Independent ran
Independent retired
No Senate election 2012 Senate election map.svg
Senate seats up for election in 2012
     Democrat ran
     Democrat retired
     Republican ran
     Republican retired
     Independent ran
     Independent retired
     No Senate election
Results by county in 2012
30%+ Democratic
40%+ Democratic
50%+ Democratic
60%+ Democratic
70%+ Democratic
80%+ Democratic
30%+ Republican
40%+ Republican
50%+ Republican
60%+ Republican
70%+ Republican
80%+ Republican
90%+ Republican
40%+ Independent
50%+ Independent
60%+ Independent
70%+ Independent USA Senate Election Results by County, 2012.svg
Results by county in 2012
     30%+ Democratic
     40%+ Democratic
     50%+ Democratic
     60%+ Democratic
     70%+ Democratic
     80%+ Democratic
     30%+ Republican
     40%+ Republican
     50%+ Republican
     60%+ Republican
     70%+ Republican
     80%+ Republican
     90%+ Republican
     40%+ Independent
     50%+ Independent
     60%+ Independent
     70%+ Independent

Retirements

Six Democrats, one independent Democrat, and three Republicans retired instead of seeking re-election.

StateSenatorReplaced by
Arizona Jon Kyl Jeff Flake
Connecticut Joe Lieberman Chris Murphy
Hawaii Daniel Akaka Mazie Hirono
Maine Olympia Snowe Angus King
Nebraska Ben Nelson Deb Fischer
New Mexico Jeff Bingaman Martin Heinrich
North Dakota Kent Conrad Heidi Heitkamp
Texas Kay Bailey Hutchison Ted Cruz
Virginia Jim Webb Tim Kaine
Wisconsin Herb Kohl Tammy Baldwin

Defeats

Two Republicans sought re-election but lost in either the primary or general election.

StateSenatorReplaced by
Indiana Richard Lugar Joe Donnelly
Massachusetts Scott Brown Elizabeth Warren

Post-election changes

One Democrat died before the start of the 113th Congress on December 17, 2012. One Democrat died during the 113th Congress on June 3, 2013. Two Democrats and one Republican resigned. All were replaced, at least initially, by appointees. In New Jersey and Massachusetts, special elections were held prior to the 2014 Senate elections for the remainder of the Class 2 terms, where Democrat Cory Booker won the New Jersey special election to succeed Republican appointee Jeffrey Chiesa, who did not seek election; and in Massachusetts, where Ed Markey won to succeed Democrat appointee Mo Cowan, who did not seek election.

StateSenatorReplaced by
Hawaii
(Class 3)
Daniel Inouye Brian Schatz
South Carolina
(Class 3)
Jim DeMint Tim Scott
Massachusetts
(Class 2)
John Kerry Mo Cowan
New Jersey
(Class 2)
Frank Lautenberg Jeffrey Chiesa
Massachusetts
(Class 2)
Mo Cowan Ed Markey
New Jersey
(Class 2)
Jeffrey Chiesa Cory Booker
Montana
(Class 2)
Max Baucus John Walsh

Arizona

Arizona election
Flag of Arizona.svg
  2006
2018  
Turnout52.9% (voting eligible) [23]
  Jeff Flake, official portrait, 112th Congress 2 (cropped).jpg Richard Carmona (cropped 2).jpg
Nominee Jeff Flake Richard Carmona
Party Republican Democratic
Popular vote1,104,4571,036,542
Percentage49.2%46.2%

2012 United States Senate election in Arizona results map by county.svg
Flake:     40–50%     50–60%     60–70%
Carmona:     50–60%     60–70%

U.S. senator before election

Jon Kyl
Republican

Elected U.S. senator

Jeff Flake
Republican

Three-term incumbent and Senate Minority Whip Republican Jon Kyl, who was re-elected in 2006 with 53% of the vote, announced he would not seek a fourth term in 2012. [5] [24] Republican representative Jeff Flake [25] won the August 28 primary with 69.1% of the vote, against three contenders, including real estate investor Wil Cardon [26] who polled 21.2%. On the Democratic side, former U.S. Surgeon General Richard Carmona [27] won the primary election, which was held August 28, 2012.

Arizona Democratic primary [28]
PartyCandidateVotes%
Democratic Richard Carmona 289,881 100.00
Total votes289,881 100.00
Arizona Republican primary [28]
PartyCandidateVotes%
Republican Jeff Flake 357,360 69.25
Republican Wil Cardon110,15021.35
Republican Clair Van Steenwyk29,1595.65
Republican Bryan Hackbarth19,1743.72
Republican John Lyon (write-in)1260.02
Republican Luis Acle (write-in)560.01
Total votes516,025 100.00

Preliminary general election results showed Flake leading 49.7%-45.7%, but 439,961 early votes had yet to be counted. [29] The official results, as tabulated by the secretary of state, showed a slightly smaller win for Flake. Flake won the election with 49.7% of the vote against Carmona's 46.2% and Victor's 4.6%. [30]

Arizona general election
PartyCandidateVotes%±%
Republican Jeff Flake 1,104,457 49.23 −4.11%
Democratic Richard Carmona1,036,54246.20+2.70%
Libertarian Marc Victor102,1094.55+1.39%
N/A write-in2,5010.11+0.02%
Majority67,9153.03−6.81%
Turnout 2,245,609100.00

California

California election
Flag of California.svg
  2006
2018  
Turnout55.2% (voting eligible) [23]
  Dianne Feinstein, official Senate photo 2.jpg Elizabeth Emken (cropped).jpg
Nominee Dianne Feinstein Elizabeth Emken
Party Democratic Republican
Popular vote7,864,6244,713,887
Percentage62.5%37.5%

2012 United States Senate election in California results map by county.svg
Feinstein:     50–60%     60–70%     70–80%     80–90%
Emken:     50–60%     60–70%     70–80%

U.S. senator before election

Dianne Feinstein
Democratic

Elected U.S. senator

Dianne Feinstein
Democratic

Incumbent Democrat Dianne Feinstein was re-elected. The primary election on June 5 took place under California's new blanket primary, where all candidates appear on the same ballot, regardless of party. In the primary, voters voted for any candidate listed, or write-in any other candidate. The top two finishers — regardless of party — advanced to the general election in November, even if a candidate managed to receive a majority of the votes cast in the June primary. In the primary, less than 15% of the total 2010 census population voted. Incumbent Democrat Dianne Feinstein finished first in the blanket primary with 49.5% of the vote. The second-place finisher was Republican candidate and autism activist Elizabeth Emken, who won 12.7% of the vote.

California primary election [31]
PartyCandidateVotes%
Democratic Dianne Feinstein (incumbent) 2,392,822 49.3
Republican Elizabeth Emken 613,613 12.6
Republican Dan Hughes323,8406.7
Republican Rick Williams157,9463.3
Republican Orly Taitz154,7813.2
Republican Dennis Jackson137,1202.8
Republican Greg Conlon135,4212.8
Republican Al Ramirez109,3992.3
Libertarian Gail Lightfoot101,6482.1
Democratic Diane Stewart97,7822.0
Democratic Mike Strimling97,0242.0
Democratic David Levitt76,4821.6
Republican Oscar Braun75,8421.6
Republican Robert Lauten57,7201.2
Peace and Freedom Marsha Feinland54,1291.2
Democratic Colleen Shea Fernald51,6231.1
Republican Donald Krampe39,0350.8
American Independent Don J. Grundmann33,0370.7
Republican Dirk Allen Konopik29,9970.6
Republican John Boruff29,3570.6
Democratic Nak Shah27,2030.6
Republican Rogelio T. Gloria22,5290.5
Republican Nachum Shifren21,7620.4
Peace and Freedom Kabiruddin Karim Ali12,2690.3
Republican Linda R. Price (write-in)250.0
Total votes4,852,406 100.0

Feinstein and Emken contested the general election on November 6, with Feinstein winning re-election in a landslide, by 62.5% to 37.5%. Feinstein's 7.86 million votes set the all-time record for the most votes cast for one candidate in one state in one election, beating senator Barbara Boxer's 6.96 million votes in 2004. This record was held until the 2016 presidential election in California, when Hillary Clinton won 8.75 million votes in the state.

California general election
PartyCandidateVotes%±%
Democratic Dianne Feinstein (incumbent) 7,864,624 62.5 +3.1%
Republican Elizabeth Emken4,713,88737.5+2.5%
Majority3,150,73725.0+0.6%
Turnout 12,578,511100.00

Connecticut

Connecticut election
Flag of Connecticut.svg
  2006
2018  
Turnout60.9% (voting eligible) [23]
  Chris murphy official photo govtrends version cropped.jpg Linda McMahon Creative Commons Attribution-Share Alike 2.0 Generic.jpg
Nominee Chris Murphy Linda McMahon
Party Democratic Republican
Popular vote815,077637,857
Percentage55.1%43.3%

2012 United States Senate election in Connecticut results map by county.svg
2012 United States Senate election in Connecticut results map by municipality.svg
Murphy:      40–50%     50–60%     60–70%     70–80%     80–90%
McMahon:      40–50%     50–60%     60–70%

U.S. senator before election

Joe Lieberman
Independent

Elected U.S. senator

Chris Murphy
Democratic

Incumbent Joe Lieberman, an independent who caucused with the Democratic Party, retired instead of running for re-election to a fifth term. [32] Republican businesswoman Linda McMahon faced Democratic representative Chris Murphy in the general election and lost, marking two defeats in as many years. [33]

In the 2006 election, incumbent Joe Lieberman was defeated in the Democratic primary by businessman Ned Lamont and formed his own party, Connecticut for Lieberman, winning re-election. Lieberman promised to remain in the Senate Democratic Caucus, but had clashed with Democrats on many significant issues, including his endorsement of Republican 2008 presidential nominee John McCain over Barack Obama. [34] As a result, Lieberman's poll numbers among Democrats had dropped significantly. [35] [36]

Connecticut Attorney General Richard Blumenthal was reportedly considering a run against Lieberman, [37] but instead ran for and won Connecticut's other Senate seat in 2010 after U.S. senator Christopher Dodd announced his retirement. [38]

Lieberman had publicly floated the possibility of running as a Democrat, [39] Republican, [40] or an independent. [41] However, he announced on January 19, 2011, that he would not run for another term. [32]

Connecticut Democratic primary
PartyCandidateVotes%
Democratic Chris Murphy 89,283 67.4
Democratic Susan Bysiewicz43,13532.6
Total votes132,418 100.0
Connecticut Republican primary
PartyCandidateVotes%
Republican Linda McMahon 83,413 72.7
Republican Chris Shays31,30527.3
Total votes114,718 100.0

Susan Bysiewicz was the first to declare herself as a candidate. [42] However, by March 2011 Chris Murphy had raised over $1 million, while Bysiewicz had raised only $500,000. Murphy represented Connecticut's 5th congressional district, which was considered Republican-leaning, and he promoted himself as the most electable candidate against a Republican challenger. Bysiewicz, the former Secretary of the State of Connecticut, enjoyed high name recognition while a statewide officeholder, and had a formidable face-off with Murphy. William Tong, a state representative, joined the race touting his biography as the son of Chinese immigrants working at a Chinese restaurant. [43] In January East Hartford resident Matthew John Oakes announced his candidacy. Oakes pointed to his real life experience being a disabled American, victim of crime, civil rights activist, growing up in the inner-city and being a political outsider for his candidacy. [44]

Wide speculation continued on Linda McMahon, who had a widely publicized race for senator in 2010. She lost the election decisively, but had strong finances and a well-established political organization. [43] McMahon met with her former campaign consultant to review her 2010 results, and said she was leaning towards running. She planned to make a decision regarding another run after the start of 2012. Congressman Chris Shays joined in August 2011, promoting his involvement in Iraq and Afghanistan's military contracting. [45] Shays campaign also gained traction from a series of independent polls showing him beating or in dead heat with the top Democratic contenders in the general election, while those same polls showed McMahon losing handily to each of the top Democratic contenders. [46] The Shays campaign has quickly capitalized on these polls, arguing for the former Congressman's electability while questioning McMahon's electability due to her loss in an open Senate seat contest in 2010 by a large margin despite spending $50 million of her own money, and also citing both her high unfavorable numbers among voters and her poor fundraising. [47]

In July 2012, Shays declared that he would not support McMahon if she won the primary. He said that he had "never run against an opponent that I have respected less—ever—and there are a lot of candidates I have run against," adding that "I do not believe that Linda McMahon has spent the time, the energy to determine what [being] a senator really means." He also said that during the last debate he had with McMahon, "I thought she was embarrassingly clueless" and that "I think she is a terrible candidate and I think she would make a terrible senator." Although he said he would not support Chris Murphy, he expected him to win the Democratic nomination and the general election. [48]

In September 2012, the records of the McMahons' 1976 bankruptcy and specifics of nearly $1 million unpaid debts from the proceeding were published. [49] In days the candidate and her husband announced the "intention to reimburse all private individual creditors that can be located". [50]

Connecticut general election [51]
PartyCandidateVotes%±%
Democratic Chris Murphy 828,761 55.1 +15.4%
Republican Linda McMahon651,08943.3+33.7%
Libertarian Paul Passarelli25,0451.6+1.6%
Majority177,67211.8
Total votes1,504,895 100.0 -
Turnout
Democratic gain from Independent Democrat Swing

Note: Murphy also appeared on the line of the Connecticut Working Families Party and received 37,553 votes on it. His Working Families and Democratic votes have been aggregated together on this table.

Delaware

Delaware election
Flag of Delaware.svg
  2006
2018  
Turnout62.7% (voting eligible) [23]
  Tom Carper, official portrait, 112th Congress.jpg Blank2x3.svg
Nominee Tom Carper Kevin Wade
Party Democratic Republican
Popular vote265,374115,694
Percentage66.4%29.0%

Delaware Governor Election Results by County 2012.svg
Carper:     40–50%     50–60%     60–70%     70–80%

U.S. senator before election

Tom Carper
Democratic

Elected U.S. senator

Tom Carper
Democratic

Incumbent Democrat Tom Carper won re-election to a third term.

Delaware Democratic primary [52]
PartyCandidateVotes%
Democratic Tom Carper (incumbent) 43,866 87.8
Democratic Keith Spanarelli6,07412.2
Total votes49,940 100.0
2012 United States Senate election in Delaware [53]
PartyCandidateVotes%±%
Democratic Tom Carper (incumbent) 265,374 66.42 −0.71%
Republican Kevin Wade115,69428.96+1.52%
Independent Party Alex Pires15,3003.83
Green Andrew Groff 3,1910.80
Margin of victory149,68037.46−2.22%
Turnout 399,55963.14+17.58%
Democratic hold

Note: The ±% column reflects the change in total number of votes won by each party from the previous election. Neither the vote shares nor the turnout figures account for write-ins. Turnout percentage is the portion of registered voters (632,805 as of January 11, 2012) [54] who voted.

Florida

Florida election
Flag of Florida.svg
  2006
2018  
Turnout63.5% (voting eligible) [23]
  Bill Nelson.jpg Connie Mack official photo (cropped).jpg
Nominee Bill Nelson Connie Mack IV
Party Democratic Republican
Popular vote4,523,4513,458,267
Percentage55.2%42.2%

2012 United States Senate election in Florida results map by county.svg
County results
Nelson:     40–50%     50–60%     60–70%     70–80%
Mack:     40–50%     50–60%     60–70%

U.S. senator before election

Bill Nelson
Democratic

Elected U.S. senator

Bill Nelson [55]
Democratic

The primary election was held August 14, 2012. Incumbent Democrat Bill Nelson won re-election to a third term, defeating Republican U.S. Representative Connie Mack IV by 13%, winning 55% to 42%. Nelson defeated Mack by over 1 million votes.

Florida Democratic primary
PartyCandidateVotes%
Democratic Bill Nelson (incumbent) 684,804 78.7
Democratic Glenn Burkett184,81521.3
Total votes869,619 100.0
Florida Republican primary
PartyCandidateVotes%
Republican Connie Mack IV 657,331 58.7
Republican Dave Weldon226,08320.2
Republican Mike McCalister155,42113.9
Republican Marielena Stuart81,8087.3
Total votes1,120,643 100.0

From a long way out Nelson appeared to be vulnerable, with some earlier polls showing Mack leading. However, in the last few weeks with new polls conducted it appeared as though Nelson was headed for a victory. The last poll place him 5 percentage points ahead of Mack. In fact Nelson would win easily by 13 percentage points. Nelson performed well in Southeast Florida (the Miami area), Tampa, Gainesville, typically Democratic areas. Nelson however managed to win in areas that lean Republican. For example, Nelson won in Duval County home of Jacksonville, and Volusia County home of Daytona Beach. Nelson's ability to outperform President Obama led to him winning the Election easily. President Obama would still win Florida, but by just about 74,000 votes, and less than a percentage point. Nelson began his third term in the Senate on January 3, 2013.

General election results
PartyCandidateVotes%±%
Democratic Bill Nelson (incumbent) 4,523,451 55.2 −5.1%
Republican Connie Mack IV3,458,26742.2+4.1%
Independent Bill Gaylor126,0791.5n/a
Independent Chris Borgia82,0891.0n/a
Write-ins600.0n/a
Majority1,065,18413.0−9.2%
Turnout 8,189,946
Democratic hold Swing

Hawaii

Hawaii election
Flag of Hawaii.svg
  2006
2018  
Turnout44.2% (voting eligible) [23]
  Mazie Hirono, official portrait, 112th Congress.jpg Linda Lingle in March 2010.jpg
Nominee Mazie Hirono Linda Lingle
Party Democratic Republican
Popular vote269,489160,994
Percentage62.6%37.4%

2012 United States Senate election in Hawaii results map by county.svg
County results
Hirono:     50–60%     60–70%     70–80%

U.S. senator before election

Daniel Akaka
Democratic

Elected U.S. senator

Mazie Hirono
Democratic

Incumbent Democrat Daniel Akaka retired instead of running for re-election to a fourth term. Democratic Congresswoman Mazie Hirono defeated former Hawaii Governor Linda Lingle in a rematch of the 2002 Hawaii gubernatorial election.

Hawaii Democratic primary [56]
PartyCandidateVotes%
Democratic Mazie Hirono 134,745 57
Democratic Ed Case95,55340
Blank Votes3,3311
Democratic Arturo Reyes1,7201
Democratic Michael Gillespie1,1041
Democratic Antonio Gimbernat5170.2
Over Votes1100
Total votes237,080 100
Hawaii Republican primary [56]
PartyCandidateVotes%
Republican Linda Lingle 44,252 90
Republican John Carroll2,9006
Blank Votes7492
Republican John Roco5451
Republican Charles Collins3661
Republican Eddie Pirkowski2320.5
Over Votes250.1
Total votes49,069 100
Hawaii general election
PartyCandidateVotes%±%
Democratic Mazie Hirono 269,489 62.6
Republican Linda Lingle160,99437.4
Majority108,49525.20
Turnout 430,48344.2

Indiana

2012 United States Senate election in Indiana
Flag of Indiana.svg
  2006
2018  
Turnout58.5% [57]
  Joe Donnelly, official portrait, 113th Congress.jpg StateTreasurerRichardMourdock.jpg
Nominee Joe Donnelly Richard Mourdock Andrew Horning
Party Democratic Republican Libertarian
Popular vote1,281,1811,133,621145,282
Percentage50.0%44.3%5.7%

2012 United States Senate election in Indiana results map by county.svg
County results
Donnelly:     40–50%     50–60%     60–70%
Mourdock:     40–50%     50–60%     60–70%

U.S. senator before election

Richard Lugar
Republican

Elected U.S. senator

Joe Donnelly
Democratic

Incumbent Republican Richard Lugar ran for re-election to a seventh term, but was defeated in the primary by Tea Party-backed Richard Mourdock. Congressman Joe Donnelly, a moderate Democrat from Indiana's 2nd Congressional District, received his party's nomination after running unopposed in the primary contest, and then defeated both Mourdock and Libertarian Andrew Horning in the general election.

Due to Lugar's unpopularity among some Tea Party voters on his positions regarding illegal immigration, voting to confirm then-U.S. Supreme Court nominees Sonia Sotomayor and Elena Kagan, the DREAM Act, the START Treaty, some gun control bills, and congressional earmarks, he was challenged by a Tea Party-backed candidate. [58] [59]

The Indiana Debate Commission's GOP primary debate with Sen. Richard Lugar and State Treasurer Richard Mourdock was set to air at 7 p.m. EDT on Wednesday, April 11. [60] In a widely published poll taken March 26 to 28, Lugar was still in the lead, but by the time of a second published poll from April 30 to May 1, Mourdock was leading 48% to 38% for Lugar.

Mourdock defeated senator Lugar in the Republican primary on May 8, 2012. [61] [62]

According to Indiana law, Lugar's defeat meant that he would not be permitted to run in the election either as a third party or an independent candidate after he lost the primary. [63]

Indiana Republican primary
PartyCandidateVotes%
Republican Richard Mourdock 400,321 60.5
Republican Richard Lugar (incumbent)261,28539.5
Total votes661,606 100.0
Indiana Democratic primary [64]
PartyCandidateVotes%
Democratic Joe Donnelly 207,715 100.0
Total votes207,715 100.0

Mourdock became embroiled in a controversy after stating that pregnancy from rape is "something that God intended". His remarks were made during a debate on October 23, 2012, while explaining his opposition to abortion even in the case of rape. At the debate Mourdock, when asked what his position on abortion was, responded:

"I know there are some who disagree and I respect their point of view but I believe that life begins at conception. The only exception I have to have an abortion is in that case of the life of the mother. I just struggled with it myself for a long time but I came to realize: "Life is that gift from God that I think even if life begins in that horrible situation of rape, that it is something that God intended to happen." [65]

Media speculated that this could affect the outcome of the Senate race and Presidential race, [66] and multiple sources noted the similarities with the rape and pregnancy statement controversies in the 2012 United States elections. [67] [68]

Responding to the criticism, Mourdock issued a statement saying: "God creates life, and that was my point. God does not want rape, and by no means was I suggesting that he does. Rape is a horrible thing, and for anyone to twist my words otherwise is absurd and sick." [69] He was later quoted at a press conference also saying: "I believe God controls the universe. I don't believe biology works in an uncontrolled fashion." [70] He however refused to issue an apology, even while prominent Republicans, including Sen. John McCain, called for him to do so. [71]

On election night Donnelly won by about six percent. He performed well in Marion County, home of Indianapolis. Donnelly also won areas with major college campuses, such as Indiana University in Bloomington, Purdue University in Lafayette. Mourdock performed well, as expected in the Indianapolis suburbs, such as Hamilton County. Mourdock conceded defeat to Donnelly at around 11:30 P.M. EST.

Indiana general election [72]
PartyCandidateVotes%±%
Democratic Joe Donnelly 1,281,181 50.04 +50.04%
Republican Richard Mourdock 1,133,62144.28−43.08%
Libertarian Andy Horning145,2825.67−6.92%
No party Write-ins 180.00n/a
Majority147,5605.76−69.49%
Turnout 2,560,10256.20+26.98%
Democratic gain from Republican Swing

Maine

2012 United States Senate election in Maine
Flag of Maine.svg
  2006
2018  
  Angus King official portrait.jpg Charles E. Summers II.jpg
Nominee Angus King Charlie Summers
Party Independent Republican
Popular vote368,724214,114
Percentage52.9%30.7%

  Cynthia Dill.jpg
Nominee Cynthia Dill
Party Democratic
Popular vote91,635
Percentage13.2%

2012 United States Senate election in Maine results map by county.svg
2012 United States Senate election in Maine results map by municipality.svg
King:     30–40%     40–50%     50–60%     60–70%     70–80%     >90%
Summers:     30–40%     40–50%     50–60%     60–70%     >90%
Dill:     40–50%     60–70%     >90%
Tie:     30–40%     40–50%     50–60%

U.S. senator before election

Olympia Snowe
Republican

Elected U.S. senator

Angus King
Independent

Despite initially being in the race early on and poised to easily win, popular Republican Olympia Snowe suddenly retired instead of running for re-election to a fourth term. Former Independent Governor Angus King won the open seat. Following senator Joe Lieberman's retirement from the Senate in 2013, King became the second Independent incumbent senator, after Vermont's Bernie Sanders.

Incumbent Olympia Snowe won re-election to a third term in 2006 with 74.01% of the vote over Democrat Jean Hay Bright and independent Bill Slavick. Due to the unpopularity of some of Snowe's votes among conservative voters, namely for the American Recovery and Reinvestment Act of 2009 and initial support of the Patient Protection and Affordable Care Act, there was speculation that she would face competition in the 2012 Republican primary from more conservative challengers. [73] The Tea Party Express had promised to aid in a primary against Snowe. [74] There had also been speculation that Snowe would switch parties, though she has always denied this. [75] [76] [77] By June 2011, Snowe had officially entered her name with signatures to run in the Republican primary, saying, she "would never switch parties".

However, on February 28, 2012, Snowe announced that she would be retiring from the U.S. Senate at the end of her term, citing the "atmosphere of polarization and 'my way or the highway' ideologies has become pervasive in campaigns and in our governing institutions" as the reason for her retirement. [78] Her announcement opened the door for candidates from all parties and creating a much more contested 2012 election. [79]

The primary election was held June 12. [80]

Maine Republican primary [81]
PartyCandidateVotes%
Republican Charlie Summers 20,578 29.46
Republican Bruce Poliquin15,97322.86
Republican Rick Bennett12,54417.96
Republican Scott D'Amboise7,73511.07
Republican William Schneider6,7849.71
Republican Deborah Plowman6,2448.94
Total votes69,098 100.00
Maine Democratic primary [81]
PartyCandidateVotes%
Democratic Cynthia Dill 22,629 44.31
Democratic Matt Dunlap18,20235.64
Democratic Jon Hinck6,30212.34
Democratic Benjamin Pollard3,9457.72
Total votes51,078 100.00
Maine general election
PartyCandidateVotes%±%
Independent Angus King 368,724 52.92 +47.55%
Republican Charlie Summers211,11430.73−43.28%
Democratic Cynthia Dill91,63513.15−7.44%
Independent Steve Woods10,3211.48n/a
Independent Danny Dalton6,4500.93n/a
Libertarian Andrew Ian Dodge5,5430.80n/a
Independent gain from Republican Swing

Maryland

Maryland election
Flag of Maryland.svg
  2006
2018  
  Ben Cardin official Senate portrait.jpg Bongino Senate.jpg
Nominee Ben Cardin Dan Bongino
Party Democratic Republican
Popular vote1,402,092674,649
Percentage55.4%26.7%

  S. R. Sobhani (cropped).jpg
Nominee Rob Sobhani
Party Independent
Popular vote420,554
Percentage16.6%

2012 United States Senate election in Maryland results map by county.svg
County results
Cardin:     30–40%     40–50%     50–60%     60–70%
     70–80%     80–90%
Bongino:     30–40%     40–50%     50–60%     60–70%

U.S. senator before election

Ben Cardin
Democratic

Elected U.S. senator

Ben Cardin
Democratic

Incumbent Democrat Ben Cardin won re-election to a second term, defeating Republican nominee Dan Bongino and independent Rob Sobhani.

Maryland Democratic primary [82] [83] [84]
PartyCandidateVotes%
Democratic Ben Cardin (incumbent) 240,704 74.2
Democratic C. Anthony Muse50,80715.7
Democratic Chris Garner9,2742.9
Democratic Raymond Levi Blagmon5,9091.8
Democratic J. P. Cusick4,7781.5
Democratic Blaine Taylor4,3761.3
Democratic Lih Young3,9931.2
Democratic Ralph Jaffe3,3131.0
Democratic Ed Tinus1,0640.3
Total votes324,218 100.0
Maryland Republican primary [83] [84]
PartyCandidateVotes%
Republican Daniel Bongino 68,597 33.6
Republican Richard J. Douglas57,77628.3
Republican Joseph Alexander18,1718.9
Republican Bro Broadus11,0205.4
Republican Rick Hoover10,7875.3
Republican John B. Kimble10,5065.1
Republican David Jones8,3804.1
Republican Corrogan R. Vaughn8,1584.0
Republican William Thomas Capps, Jr.7,0923.5
Republican Brian Vaeth3,7811.9
Total votes204,268 100.0

In both 2010 and 2009, National Journal magazine rated Cardin as tied for most liberal senator, based on his voting record. As of June 30, Cardin had $1.8 million in his campaign account. [85]

Maryland general election [86]
PartyCandidateVotes%±%
Democratic Ben Cardin (incumbent) 1,402,092 55.41 +1.20%
Republican Daniel Bongino674,64926.66−17.53%
Independent S. Rob Sobhani420,55416.62N/A
Libertarian Dean Ahmad30,6721.21+1.21%
N/A Others (write-in)2,5830.10+0.05%
Majority727,443100.00
Turnout 2,530,55068.23
Democratic hold Swing

Massachusetts

2012 United States Senate election in Massachusetts
Flag of Massachusetts.svg
2018  
  Elizabeth Warren CFPB.jpg Sbrownofficial.jpg
Nominee Elizabeth Warren Scott Brown
Party Democratic Republican
Popular vote1,696,3461,458,048
Percentage53.7%46.2%

2012 United States Senate election in Massachusetts results map by county.svg
2012 United States Senate Election in Massachusetts by Municipality.svg
Warren:     40–50%     50–60%     60–70%     70–80%
Brown:     40–50%     50–60%     60–70%     70–80%

U.S. senator before election

Scott Brown
Republican

Elected U.S. senator

Elizabeth Warren
Democratic

Incumbent Republican Scott Brown ran for re-election to a first full term. He had been elected in a special election in 2010 following the death of incumbent Democrat Ted Kennedy. Brown faced no challengers from his own party. For the Democrats, an initial wide field of prospective candidates narrowed after the entry of Harvard Law School Professor Elizabeth Warren, the architect of the Consumer Financial Protection Bureau. Warren clinched near-unanimous party support, with all but one of the other Democratic candidates withdrawing following her entrance. After winning her party's nomination, eliminating any need for a primary, she faced Brown in the general election.

The election was one of the most-followed races in 2012 and cost approximately $82 million, which made it the most expensive election in Massachusetts history and the second-most expensive in the entire 2012 election cycle, next to that year's presidential election. This was despite the two candidates' having agreed not to allow outside money to influence the race. Opinion polling indicated a close race for much of the campaign, though Warren opened up a small but consistent lead in the final few weeks. She went on to defeat Brown by over 236,000 votes, 54% to 46%.

Democratic U.S. senator Ted Kennedy was re-elected in 2006, and died on August 25, 2009, from a malignant brain tumor. [87] On September 24, 2009, Massachusetts Governor Deval Patrick appointed longtime friend of Kennedy and former Democratic National Committee Chairman Paul G. Kirk to succeed Kennedy until a special election could be held. [88] Kirk's appointment was especially controversial, as the Governor's ability to appoint an interim senator was removed during the Romney administration by the Democratic-controlled legislature, as a precaution if senator and presidential nominee John Kerry was elected President in 2004. Laws surrounding Senate appointment were quickly changed following Kennedy's death. [89] The Massachusetts Republican Party sued in an attempt to halt Kirk's appointment, but it was rejected by Suffolk Superior Court Judge Thomas Connolly. [90]

In the special election held January 19, 2010, Republican State senator Scott Brown defeated Democratic State Attorney General Martha Coakley in an upset victory. [91] Brown thus became the first Republican to be elected from Massachusetts to the United States Senate since Edward Brooke in 1972 and he began serving the remainder of Kennedy's term on February 4, 2010. [92] [93]

Incumbent Scott Brown faced no challenges from within his party. The political action committee National Republican Trust, a group integral to Brown's election in 2010, vowed to draft a challenger for Brown but were unable to find one. [94]

Massachusetts Republican primary [95]
PartyCandidateVotes%
Republican Scott Brown 133,860 99.46
Republican Write-ins7330.54
Total votes134,593 100.00

The Massachusetts Democratic Convention was held June 2, 2012, where Warren received 95.77% of delegate votes. [96] As the only candidate with 15% of delegate votes necessary to qualify for the primary ballot, Warren eliminated her challenger Marisa DeFranco, becoming the de facto nominee. The Democratic primary was held September 6, 2012, with Warren running unopposed. [97]

Democratic primary vote [98]
PartyCandidateVotes%
Democratic Elizabeth Warren 308,979 97.59
Democratic Write-ins7,6382.41
Total votes316,617 100.00

Brown ran as a moderate, stressing his ability to cross party lines and highlighting his votes for the Dodd-Frank financial reform law and to repeal "don't ask, don't tell". [99] Warren campaigned on a platform championing the middle class, and supporting Wall Street regulation. Warren criticized Brown for continually voting with Republican leadership, and argued that he was not the bipartisan moderate he claimed to be. [100] [101] A staple of Brown's attack tactics against Warren was his consistent reference to her as "Professor Warren", in attempt to portray her as an elitist academic. [102] Brown faced blowback after the second debate, during which he claimed conservative Antonin Scalia was a "model" Supreme Court Justice, prompting boos from the debate audience. [103]

Warren spoke at the 2012 Democratic National Convention immediately before Bill Clinton on the penultimate night of the convention. Warren contrasted President Obama's economic plan with Mitt Romney's in the 2012 election and rebuked the Republican Party's economic policy stating: "Their vision is clear: 'I've got mine, and the rest of you are on your own.'" Warren positioned herself as a champion of a beleaguered middle class that, as she said, "has been chipped, squeezed and hammered." [104] [105] [106] Brown attended the 2012 Republican National Convention, but was not a speaker there. According to Brown, he had rejected an offer to play a larger role, and limited his attendance to a single day because of scheduling demands. [107] [108]

Following Todd Akin's controversial "legitimate rape" comments, Brown was the first sitting senator to demand he drop out of the Missouri U.S. Senate race. [109] He also called on his Party to "recognize in its platform that you can be pro-choice and still be a good Republican." [109] Brown's campaign had been endorsed by many Massachusetts Democrats, many of whom were prominently featured in his campaign ads. [110]

In September 2011, a video of Warren explaining her approach to economic policy gained popularity on the internet. [111] In the video, Warren rebuts the charge that asking the rich to pay more taxes is "class warfare", pointing out that no one grew rich in America without depending on infrastructure paid for by the rest of society, stating: [112] [113]

There is nobody in this country who got rich on his own. Nobody. ... You moved your goods to market on the roads the rest of us paid for; you hired workers the rest of us paid to educate; you were safe in your factory because of police forces and fire forces that the rest of us paid for. You didn't have to worry that marauding bands would come and seize everything at your factory, and hire someone to protect against this, because of the work the rest of us did. Now look, you built a factory and it turned into something terrific, or a great idea. God bless. Keep a big hunk of it. But part of the underlying social contract is, you take a hunk of that and pay forward for the next kid who comes along.

On July 13, 2012, President Obama sparked a controversy when he echoed her thoughts [114] [115] in a campaign speech saying, "Somebody helped to create this unbelievable American system that we have that allowed you to thrive. Somebody invested in roads and bridges. If you've got a business—you didn't build that. Somebody else made that happen." [116] [117]

Warren encountered significant opposition from business interests. In August 2012, Rob Engstrom, political director for the United States Chamber of Commerce, claimed that "no other candidate in 2012 represents a greater threat to free enterprise than Professor Warren." [118] She nonetheless raised $39 million for her campaign, the most of any Senate candidate in 2012. [119]

Despite President Obama's winning the state easily, and winning all of the state's counties, this race was fairly close. As expected, Warren performed very well in Suffolk County, which is home to the state's largest city and its capital Boston. Brown performed well in the southern part of the state near Cape Cod. Warren made history by becoming the first woman elected to the U.S. Senate in the state of Massachusetts.

Massachusetts general election [120]
PartyCandidateVotes%±%
Democratic Elizabeth Warren 1,696,346 53.74% Increase2.svg 6.6%
Republican Scott Brown (incumbent)1,458,04846.19%Decrease2.svg 4.9%
All others2,1590.07%Decrease2.svg 0.9%
Majority236,1397.48%
Turnout 3,156,553
Democratic gain from Republican Swing Increase2.svg 6.2%

Michigan

Michigan election
Flag of Michigan.svg
  2006
2018  
  Debbie Stabenow, official portrait.jpg Pete Hoekstra, official portrait, 111th Congress.jpg
Nominee Debbie Stabenow Pete Hoekstra
Party Democratic Republican
Popular vote2,735,8261,767,386
Percentage58.8%38.0%

2012 United States Senate election in Michigan results map by county.svg
Stabenow:     40–50%     50–60%     60–70%     70–80%
Hoekstra:     40–50%     50–60%     60–70%

U.S. senator before election

Debbie Stabenow
Democratic

Elected U.S. senator

Debbie Stabenow
Democratic

Incumbent Democrat Debbie Stabenow was re-elected to a third term after being unopposed in the Democratic primary. The Republican nominee was former Congressman Pete Hoekstra. Stabenow defeated Hoekstra by a landslide 21% margin and by almost one million votes.

Michigan Democratic primary
PartyCandidateVotes%
Democratic Debbie Stabenow (incumbent) 702,773 100.00
Total votes702,773 100.00%

The GOP primary campaign was mainly a battle between Hoekstra and Durant as they were the most visible in running campaign ads. Despite Durant's attack ads, Hoekstra was leading in the polls for the Republican nomination. [121]

Republican primary results [122]
PartyCandidateVotes%
Republican Pete Hoekstra 398,793 54.2
Republican Clark Durant246,58433.5
Republican Randy Hekman49,0806.7
Republican Gary Glenn40,7265.5
Total votes735,183 100.0
Michigan general election
PartyCandidateVotes%±%
Democratic Debbie Stabenow (incumbent) 2,735,826 58.8 +1.9%
Republican Pete Hoekstra 1,767,38638.0−3.3%
Libertarian Scotty Boman 84,4801.8+1.1%
Green Harley Mikkelson27,8900.6
Constitution Richard Matkin26,0380.6+0.1%
Natural Law John Litle11,2290.2+0.1%
OthersWrite-in690.0
Majority968,44020.8
Turnout 4,652,918
Democratic hold Swing 2.6%

Minnesota

Minnesota election
Flag of Minnesota.svg
  2006
2018  
  Amy Klobuchar, official portrait, 113th Congress (cropped).jpg Kurt Bills.jpg
Nominee Amy Klobuchar Kurt Bills
Party Democratic (DFL) Republican
Popular vote1,854,595867,874
Percentage65.2%30.5%

2012 United States Senate election in Minnesota results map by county.svg
Klobuchar:     50–60%     60–70%     70–80%
Bills:     40–50%

U.S. senator before election

Amy Klobuchar
Democratic (DFL)

Elected U.S. senator

Amy Klobuchar
Democratic (DFL)

Incumbent Democrat Amy Klobuchar was re-elected to a second term in a landslide, defeating the Republican nominee, State Representative Kurt Bills by almost one million votes, and carrying all but two of the state's counties.

Incumbent Amy Klobuchar was first elected in 2006 to succeed the retiring DFL incumbent Mark Dayton.

Democratic-Farmer-Labor primary results [123]
PartyCandidateVotes%
Democratic (DFL) Amy Klobuchar 183,702 90.79
Democratic (DFL) Dick Franson6,8323.38
Democratic (DFL) Jack Shepard6,6383.28
Democratic (DFL) Darryl Stanton5,1602.55
Total votes202,332 100.00
Minnesota Republican primary [123]
PartyCandidateVotes%
Republican Kurt Bills 63,380 51.12
Republican David Carlson43,84735.37
Republican Bob Carney, Jr.16,75513.51
Total votes123,982 100.00

The Independence Party of Minnesota did not plan to run a candidate in the general election. Party chairman Mark Jenkins said in November 2011 that he saw the Senate election as "a distraction from having our best and brightest engaged in state legislative races". [124] At the party's convention in June 2012, neither candidate was endorsed although Williams won a majority of the votes and came within two votes of the required 60% needed for the party's endorsement. He proceeded with his run for the Senate but the party focused its attention on state legislative races. [125]

Minnesota general election [126]
PartyCandidateVotes%±%
Democratic (DFL) Amy Klobuchar (incumbent) 1,852,526 65.2 +7.1%
Republican Kurt Bills869,08930.6−7.3%
Independence Stephen Williams73,5592.6−0.6%
Grassroots Tim Davis30,4651.1n/a
Minnesota Open Progressive Party Michael Cavlan13,9330.5n/a
Majority983,43734.6+14.4%
Democratic (DFL) hold Swing

Mississippi

Mississippi election
Flag of Mississippi (2001-2020).svg
2018  
Turnout59.7% (voting eligible) [23]
  SenatorRogerWicker(R-MS).jpg Blank2x3.svg
Nominee Roger Wicker Albert N. Gore
Party Republican Democratic
Popular vote709,626503,467
Percentage57.2%40.6%

2012 United States Senate election in Mississippi results map by county.svg
County results
Wicker:     50–60%     60–70%     70–80%     80–90%
Gore:     40-50%     50–60%     60–70%     70–80%     80–90%

U.S. senator before election

Roger Wicker
Republican

Elected U.S. senator

Roger Wicker
Republican

Incumbent Republican Roger Wicker won re-election to his first full term over Democrat Albert N. Gore. Former U.S. representative Roger Wicker was appointed by Governor Haley Barbour after then-incumbent Trent Lott resigned at the end of 2007. A 2008 special election was later scheduled to determine who would serve the remainder of the term. Wicker defeated former Mississippi Governor Ronnie Musgrove with 54.96% of the vote in the special election.

Mississippi Republican primary [127]
PartyCandidateVotes%
Republican Roger Wicker 254,936 89.17
Republican Robert Maloney18,8576.60
Republican Allen Hathcock12,1064.23
Total votes285,899 100.00
Mississippi Democratic primary [128]
PartyCandidateVotes%
Democratic Albert Gore 49,157 56.77
Democratic Roger Weiner21,13124.40
Democratic Will Oatis16,30018.83
Total votes86,588 100.00
Mississippi general election
PartyCandidateVotes%±%
Republican Roger Wicker (incumbent) 709,626 57.16
Democratic Albert Gore503,46740.55
Constitution Thomas Cramer15,2811.23
Reform Shawn O'Hara13,1941.06
Majority206,15916.6
Turnout 1,241,568

Missouri

2012 United States Senate election in Missouri
Flag of Missouri.svg
  2006
2018  
  Claire McCaskill, Official portrait, 112th Congress.jpg Todd Akin.jpg
Nominee Claire McCaskill Todd Akin
Party Democratic Republican
Popular vote1,484,6831,063,698
Percentage54.8%39.1%

 
NomineeJonathan Dine
Party Libertarian
Popular vote164,991
Percentage6.1%

2012 United States Senate election in Missouri results map by county.svg
McCaskill:     40–50%     50–60%     60–70%     70-80%     80–90%
Akin:     40–50%     50–60%     60–70%

U.S. senator before election

Claire McCaskill
Democratic

Elected U.S. senator

Claire McCaskill
Democratic

Incumbent Democrat Claire McCaskill was unopposed in her primary and U.S. Representative Todd Akin won the Republican nomination with a plurality in a close three-way race. McCaskill was re-elected to a second term.

Time featured the race in their Senate article. Similar to other races, the article mentioned how McCaskill was fading in pre-election polls, and she was considered the most vulnerable/endangered Democratic incumbent that year. But Akin's comments about a woman's body preventing pregnancy if it was "legitimate rape" quickly shot McCaskill back up, winning her the election. [129] [130] [131]

Missouri Democratic primary [132]
PartyCandidateVotes%
Democratic Claire McCaskill (incumbent) 289,481 100.00
Total votes289,481 100.00

The Republican primary, held August 7, 2012, was one of the three most anticipated of summer 2012. This was due to the projected closeness of the Federal races in Missouri in November 2012, and the potential to change the control of the Senate in January 2013. [133] Democrats believed that Todd Akin would be the weakest among the likely challengers for the Senate seat, and ads attacking him as "too conservative" were largely viewed as a veiled support for his nomination. [134] [135] [136]

Missouri Republican primary [132]
PartyCandidateVotes%
Republican Todd Akin 217,404 36.05
Republican John Brunner180,78829.98
Republican Sarah Steelman 176,12729.20
Republican Jerry Beck9,8011.62
Republican Hector Maldonado7,4101.23
Republican Robert Poole6,1001.01
Republican Mark Memoly3,2050.53
Republican Mark Lodes2,2850.38
Total votes603,120 100.00
Libertarian primary results [132]
PartyCandidateVotes%
Libertarian Jonathan Dine 2,470 100.00
Total votes2,470 100.00

While making remarks on rape and abortion on August 19, 2012, Akin made the claim that women victims of what he described as "legitimate rape" rarely experience pregnancy from rape. In an interview aired on St. Louis television station KTVI-TV, Aiken was asked his views on whether women who became pregnant due to rape should have the option of abortion. He replied:

Well you know, people always want to try to make that as one of those things, well how do you, how do you slice this particularly tough sort of ethical question. First of all, from what I understand from doctors, that's really rare. If it's a legitimate rape, the female body has ways to try to shut that whole thing down. But let's assume that maybe that didn't work or something. I think there should be some punishment, but the punishment ought to be on the rapist and not attacking the child. [137]

The comments from Akin almost immediately led to uproar, with the term "legitimate rape" being taken to imply belief in a view that some kinds of rape are "legitimate", or alternatively that the many victims who do become pregnant from rape are likely to be lying about their claim. His claims about the likelihood of pregnancy resulting from rape were widely seen as being based on long-discredited pseudoscience with experts seeing the claims as lacking any basis of medical validity. [138] [139] [140] Akin was not the first to make such claims, but was perhaps one of the most prominent. [141] While some voices such as Iowa congressman Steve King supported Akin, [142] senior figures in both parties condemned his remarks and some Republicans called for him to resign. [143] [144] [145] In the resulting furor, Akin received widespread calls to drop out of his Senate race from both Republicans and Democrats. [146] Akin apologized after making the comment, saying he "misspoke", and he stated he planned to remain in the Senate race. This response was itself attacked by many commentators who saw the initial comments as representative of his long-held views, rather than an accidental gaffe.

The comment was widely characterized as misogynistic and recklessly inaccurate, with many commentators remarking on the use of the words "legitimate rape". [147] [148] [149] Related news articles cited a 1996 article in an obstetrics and gynecology journal, which found that 5% of women who were raped became pregnant, which equaled about 32,000 pregnancies each year in the US alone. [150] A separate 2003 article in the journal Human Nature estimated that rapes are twice as likely to result in pregnancies as consensual sex. [151] (See also pregnancy from rape.)

The incident was seen as having an impact on Akin's senate race and the Republicans' chances of gaining a majority in the U.S. Senate, [152] by making news in the week before the 2012 Republican National Convention and by "shift[ing] the national discussion to divisive social issues that could repel swing voters rather than economic issues that could attract them". [153] Akin, along with other Republican candidates with controversial positions on rape, lost due to backlash from women voters. [154]

On October 20, at a fundraiser, Akin compared McCaskill to a dog. After being criticized, Akin's campaign aide wrote on his official Twitter page that if Claire McCaskill "were a dog, she'd be a 'Bullshitsu.'" The aide later said that he was joking. [155] Akin was caught on tape commenting that "Sen. Claire McCaskill goes to Washington, D.C., to 'fetch' higher taxes and regulations." [156]

Even though the last poll before the election showed Akin only losing by four percentage points, McCaskill defeated him handily, by a 15.5% margin of victory and a vote margin of 420,985. Both McCaskill and incumbent governor Jay Nixon, running at the same time, were able to get a large number of votes from rural parts of the state, something President Barack Obama was not able to do. McCaskill and Nixon were declared the winners of their respective races even before the known big Democratic strongholds of St. Louis and Kansas City came in. Akin conceded defeat to McCaskill at 10:38 P.M. Central Time.

Missouri general election [157]
PartyCandidateVotes%±%
Democratic Claire McCaskill (incumbent) 1,484,683 54.71 +5.13%
Republican Todd Akin 1,063,69839.20−8.11%
Libertarian Jonathan Dine164,9916.08+3.83%
Write-ins2510.01n/a
Margin of victory420,98515.51+13.24%
Turnout 2,713,62364.75

Note: The ±% column reflects the change in total number of votes won by each party from the previous election. Turnout percentage is the portion of registered voters (4,190,936 as of October 24, 2012) [158] who voted.

Montana

2012 United States Senate election in Montana
Flag of Montana.svg
  2006
2018  
  Jon Tester, official 110th Congress photo.jpg Denny Rehberg, official portrait, 111th Congress.jpg
Nominee Jon Tester Denny Rehberg
Party Democratic Republican
Popular vote236,123218,051
Percentage48.6%44.9%

 
NomineeDan Cox
Party Libertarian
Popular vote31,892
Percentage6.6%

2012 United States Senate election in Montana results map by county.svg
County results
Tester:      40–50%     50–60%     60–70%
Rehberg:      40–50%     50–60%     60–70%     70–80%

U.S. senator before election

Jon Tester
Democratic

Elected U.S. senator

Jon Tester
Democratic

Incumbent Democrat Jon Tester successfully ran for re-election to a second term. [159] [160]

Montana Republican primary [161]
PartyCandidateVotes%
Republican Denny Rehberg 105,632 76.2
Republican Dennis Teske33,07923.8
Total votes138,711 100.00

Former president of the Montana Senate and farmer Jon Tester was elected with 49.2% of the vote in 2006, defeating incumbent Conrad Burns.

As of June 30, 2011, Jon Tester had saved $2.34 million in campaign funds. Tester has been accused by Republican Denny Rehberg's senate campaign of depending on financial contributions from Wall Street banking executives and movie stars. [162]

On February 5, 2011, U.S. Representative Denny Rehberg announced his intention to run for the U.S. Senate. [163] Steve Daines had announced he would seek the Republican nomination on November 13, 2010, [164] but just before Rehberg's announcement he dropped out of the primary and announced he would instead seek the Republican nomination for Montana's at-large congressional district in 2012. [165]

As of early July 2010, Denny Rehberg had saved $1.5 million of an original $2 million in campaign funds. Rehberg accused Democrat Jon Tester's senate campaign of depending on financial contributions from Wall Street banking executives and Hollywood while Rehberg's campaign relies primarily on in state donations. Tester's campaign countered that Rehberg has been funded by petroleum special interests and Wall Street. [162]

The National Republican Senatorial Committee aired an attack ad against Jon Tester that mistakenly included a digitally manipulated photo of Tester (who has only two fingers on his left hand) with full sets of fingers. [166] Another ad against Tester, from the Karl Rove group Crossroads GPS, falsely asserted that Tester had voted in favor of Environmental Protection Agency regulation of farm dust. [167] In fact, Tester had praised the EPA for not attempting such a regulation. [168] The vote cited in the anti-Tester ad concerned currency exchange rates. [169]

In early October 2012, Crossroads GPS announced it would launch a $16 million advertising buy in national races, of which four were this and three other Senate elections. [170]

Montana general election
PartyCandidateVotes%±%
Democratic Jon Tester (incumbent) 236,123 48.58 −0.58%
Republican Denny Rehberg 218,05144.86−3.43%
Libertarian Dan Cox31,8926.56+4.01%
Margin of victory18,0723.72+2.84%
Turnout 486,066
Democratic hold Swing

*Note: The ±% column reflects the change in the percent of the votes won by each party from the 2006 Senate election. Neither the vote shares nor turnout figure account for write-ins.

Nebraska

2012 United States Senate election in Nebraska
Flag of Nebraska.svg
  2006
2018  
  Deb Fischer, official portrait, 113th Congress.jpg Senator Bob Kerrey.jpg
Nominee Deb Fischer Bob Kerrey
Party Republican Democratic
Popular vote455,593332,979
Percentage57.8%42.2%

2012 United States Senate election in Nebraska results map by county.svg
Fischer:     50–60%     60–70%     70–80%     80–90%
Kerrey:     50–60%

U.S. senator before election

Ben Nelson
Democratic

Elected U.S. senator

Deb Fischer
Republican

Incumbent Democrat Ben Nelson retired instead of seeking a third term. [10] Former U.S. senator Bob Kerrey, a Democrat, and state senator Deb Fischer, a Republican, won their respective parties' primary elections on May 15, 2012. Fischer won the general election with 58% of the vote.

Nebraska Democratic primary [171]
PartyCandidateVotes%
Democratic Bob Kerrey 66,586 81.0
Democratic Chuck Hassebrook9,88612.0
Democratic Steven Lustgarten2,1772.6
Democratic Larry Marvin2,0762.5
Democratic Sherman Yates1,5001.9
Total votes82,225 100.0
Nebraska Republican primary [171]
PartyCandidateVotes%
Republican Deb Fischer 79,941 41.0
Republican Jon Bruning70,06735.9
Republican Don Stenberg36,72718.8
Republican Pat Flynn5,4132.8
Republican Spencer Zimmerman1,6010.8
Republican Sharyn Elander1,2940.7
Total votes195,043 100.0
Nebraska general election [172]
PartyCandidateVotes%
Republican Deb Fischer 455,593 57.8
Democratic Bob Kerrey332,97942.2
Total votes788,572 100.0

Nevada

Nevada election
Flag of Nevada.svg
  2006
2018  
Turnout57.1% (voting eligible) [23]
  Dean Heller, Official Senate Portrait, 112th Congress.jpg Shelley Berkley, official portrait, 112th Congress 2.jpg
Nominee Dean Heller Shelley Berkley
Party Republican Democratic
Popular vote457,656446,080
Percentage45.9%44.7%

2012 United States Senate election in Nevada results map by county.svg
Heller:     50–60%     60–70%     70–80%
Berkley:     50–60%

U.S. senator before election

Dean Heller
Republican

Elected U.S. senator

Dean Heller
Republican

Incumbent Republican Dean Heller, who was recently appointed to this seat left vacant by resigning U.S. senator John Ensign, was narrowly elected to his first full term over Congresswoman Shelley Berkley.

Ensign had been re-elected in 2006 over Jack Carter, son of former president Jimmy Carter, by a margin of 55–41%. Ensign's re-election campaign was expected to be complicated after it was revealed in 2009 that he had been involved in an extramarital affair with the wife of one of his campaign staffers, allegedly made payments to the woman's family and arranged work for her husband to cover himself. [173] [174]

Ensign faced an investigation from the Senate Ethics Committee and his poll numbers declined significantly. [175] [176] There was speculation that Ensign might resign before the election, but he denied these charges and initially stated he would run. [177] However, he changed his mind and on March 7, 2011, Ensign announced that he would not seek re-election. [178] On April 22, Ensign announced that he was resigning effective May 3. [179] This is the only senate election in 2012 to vote Republican while Obama carried it on the presidential level.

Nevada Republican primary [180]
PartyCandidateVotes%
Republican Dean Heller (incumbent) 88,958 86.3
Republican Sherry Brooks5,3565.2
None of These Candidates 3,3583.3
Republican Eddie "In Liberty" Hamilton2,6282.6
Republican Richard Charles2,2952.2
Republican Carlo "Nakusa" Poliak5120.5
Total votes103,107 100.0
Nevada Democratic primary [180]
PartyCandidateVotes%
Democratic Shelley Berkley 62,081 79.5
Democratic Nancy Price4,2105.4
Democratic Steve Brown3,9985.1
None of These Candidates 3,6374.7
Democratic Barry Ellsworth2,4913.2
Democratic Louis Macias1,7142.2
Total votes78,131 100.0
2012 United States Senate election in Nevada
PartyCandidateVotes%±%
Republican Dean Heller (incumbent) 457,656 45.87 −9.53%
Democratic Shelley Berkley 446,08044.71+3.71%
Independent American David Lory VanDerBeek48,7924.89+3.56%
None of These Candidates 44,2774.54+3.13%
Majority12,0341.20
Turnout 997,805
Republican hold

New Jersey

New Jersey election
Flag of New Jersey.svg
  2006
2018  
  Robert Menendez official Senate portrait.jpg Joe Kyrillos (cropped).jpg
Nominee Bob Menendez Joe Kyrillos
Party Democratic Republican
Popular vote1,987,6801,329,534
Percentage58.9%39.4%

2012 United States Senate election in New Jersey results map by county.svg
2012 United States Senate election in New Jersey results map by municipality.svg
Menendez:     40–50%     50–60%     60–70%     70–80%     80–90%     >90%
Kyrillos:     40–50%     50–60%     60–70%     70–80%     >90%

U.S. senator before election

Bob Menendez
Democratic

Elected U.S. senator

Bob Menendez
Democratic

Incumbent Democrat Bob Menendez won re-election to a second full term. This was the first time since 1976 that a candidate for this seat received over 55% of the vote. Bob Menendez became the first Hispanic-American U.S. senator to represent New Jersey in January 2006 when former U.S. senator Jon Corzine appointed him to the seat after having resigned to become governor of New Jersey, following his election in November 2005. [181] In November 2006, after a tough and painful election, Menendez defeated Republican state senator Thomas Kean, Jr. with 53.3% of the vote.

New Jersey Democratic primary [182]
PartyCandidateVotes%
Democratic Bob Menendez (incumbent) 235,321 100.0
Total votes235,321 100.0
New Jersey Republican primary [182]
PartyCandidateVotes%
Republican Joseph Kyrillos 161,146 77.1
Republican David Brown18,6718.9
Republican Joseph Rullo16,6908.0
Republican Bader Qarmout12,6376.0
Total votes209,144 100.0
New Jersey general election [183]
PartyCandidateVotes%±%
Democratic Bob Menendez (incumbent) 1,987,680 58.87% +5.50%
Republican Joseph Kyrillos1,329,53439.37%−4.98%
Libertarian Kenneth R. Kaplan16,8030.50%−0.15%
Green Ken Wolski 15,8010.47%
Independent Gwen Diakos9,3590.28%
Independent J. David Dranikoff3,8340.11%
Independent Inder "Andy" Soni3,5930.11%
Independent Robert "Turk" Turkavage3,5320.10%
Socialist Greg Pason 2,2490.07%
Independent Eugene M. LaVergne2,1980.07%
Independent Daryl Brooks2,0660.06%
Majority658,14619.49
Turnout 3,376,649

New Mexico

New Mexico election
Flag of New Mexico.svg
  2006
2018  
  Martin Heinrich, official portrait, 112th Congress crop.jpg Heather Wilson official portrait (cropped).jpg
Nominee Martin Heinrich Heather Wilson
Party Democratic Republican
Popular vote395,717351,260
Percentage51.0%45.3%

2012 United States Senate election in New Mexico results map by county.svg
County results
Heinrich:      40–50%     50–60%     60–70%     70–80%
Wilson:      40–50%     50–60%     60–70%     70–80%

U.S. senator before election

Jeff Bingaman
Democratic

Elected U.S. senator

Martin Heinrich
Democratic

Incumbent Democrat Jeff Bingaman retired instead of running for re-election to a sixth term. [184] Democratic U.S. Representative Martin Heinrich won the open seat. Incumbent Jeff Bingaman won re-election to a fifth term with 70.61% of the vote against Allen McCulloch in the 2006 U.S. senatorial election in New Mexico.

New Mexico Democratic primary [185]
PartyCandidateVotes%
Democratic Martin Heinrich 83,432 58.9
Democratic Hector Balderas58,12841.1
Total votes141,560 100.0
New Mexico Republican primary [185]
PartyCandidateVotes%
Republican Heather Wilson 63,631 70.0
Republican Greg Sowards27,21430.0
Total votes90,845 100.0
New Mexico general election
PartyCandidateVotes%±%
Democratic Martin Heinrich 395,717 51.01 −19.81%
Republican Heather Wilson351,29545.28+16.17%
American Independent Jon Barrie27,6493.6
Write-inWrite-in6170.08%
Majority44,4586.1
Turnout 775,278

New York

2012 United States Senate election in New York
Flag of New York.svg
2018  
Turnout53.2% (voting eligible) [23]
  Kirsten Gillibrand, official portrait, 112th Congress.jpg EWendyLong022612 12.jpg
Nominee Kirsten Gillibrand Wendy Long
Party Democratic Republican
Popular vote4,822,3301,758,702
Percentage72.2%26.3%

2012 United States Senate election in New York results map by county.svg
Gillibrand:     50–60%     60–70%     70–80%     80–90%     >90%
Long:     40–50%     50–60%

U.S. senator before election

Kirsten Gillibrand
Democratic

Elected U.S. senator

Kirsten Gillibrand
Democratic

Incumbent Democrat Kirsten Gillibrand won re-election to her first full term. Gillibrand was opposed in the general election by Wendy Long (who ran on the Republican and Conservative Party tickets) and by three minor party candidates. Gillibrand was re-elected with 72% of the vote, by a margin of 46%, the highest margin for any statewide candidate in New York. Gillibrand performed 9 points better than President Barack Obama did in the presidential race in New York. She carried 60 out of 62 counties statewide. There was one debate, held in October 2012 where Gillibrand and Long debated various issues such as the economy, abortion rights, the debt and deficit, foreign policy, jobs, and tax and regulatory policy.

Governor David Paterson appointed then-U.S. Representative Kirsten Gillibrand to serve as U.S. senator from New York until the 2010 special election, succeeding former U.S. senator Hillary Clinton, who resigned to serve as U.S. Secretary of State in the Obama administration. Gillibrand won the special election in 2010 with 62.95% of the vote over former U.S. Representative Joseph DioGuardi.

According to preliminary results, Gillibrand won re-election by a landslide of over 70% of the vote on November 6, 2012.

New York general election
PartyCandidateVotes%±%
Democratic Kirsten Elizabeth Gillibrand (incumbent) 4,822,330 72.22 +9.22%
Republican Wendy Elizabeth Long1,758,70226.34
Green Colia Clark36,5470.60
Libertarian Chris Edes28,3150.50
Independent John Mangelli20,2230.30
Write-inWrite-in2,0010.02
Majority3,053,412
Turnout 6,677,666100.00

North Dakota

2012 United States Senate election in North Dakota
Flag of North Dakota.svg
  2006
2018  
Turnout60.6% (voting eligible) [23]
  Heidi Heitkamp official portrait 113th Congress.jpg Rick Berg, official portrait, 112th Congress.jpg
Nominee Heidi Heitkamp Rick Berg
Party Democratic–NPL Republican
Popular vote161,337158,401
Percentage50.2%49.3%

2012 United States Senate election in North Dakota results map by county.svg
Heitkamp:     50–60%     60–70%     80–90%
Berg:     50–60%     60–70%     70–80%

U.S. senator before election

Kent Conrad
Democratic–NPL

Elected U.S. senator

Heidi Heitkamp
Democratic–NPL

Incumbent Democrat Kent Conrad retired instead of running for re-election to a fifth term. Though each party endorses a single candidate in state political conventions in the spring, North Dakota determines actual ballot access for the general election in a statewide primary election that was held June 12, 2012. [186] Former Democratic-NPL Attorney General Heidi Heitkamp ran for and won the open seat in a close-fought victory. [187]

North Dakota Republican primary [188]
PartyCandidateVotes%
Republican Rick Berg 67,849 66.41
Republican Duane Sand34,20933.48
Republican Write-ins1110.41
Total votes102,281 100.00
North Dakota general election [188]
PartyCandidateVotes%±%
Democratic–NPL Heidi Heitkamp 161,337 50.24 −18.26%
Republican Rick Berg158,40149.32+20.04%
Write-ins1,4060.44
Majority2,9360.92
Turnout 322,509
Democratic–NPL hold Swing

Ohio

Ohio election
Flag of Ohio.svg
  2006
2018  
Turnout64.6% (voting eligible) [23]
  Sherrod Brown official photo 2009 2 (cropped).jpg Josh Mandel.jpg
Nominee Sherrod Brown Josh Mandel
Party Democratic Republican
Popular vote2,762,7572,435,740
Percentage50.7%44.7%

2012 United States Senate election in Ohio results map by county.svg
Brown:      40–50%     50–60%     60–70%
Mandel:      40–50%     50–60%     60–70%     70–80%

U.S. senator before election

Sherrod Brown
Democratic

Elected U.S. senator

Sherrod Brown
Democratic

Incumbent Democrat Sherrod Brown won re-election to a second term. He was unopposed in the Democratic primary and Ohio State Treasurer Josh Mandel won the Republican primary with 63% of the vote. [189] [190]

Ohio Democratic primary
PartyCandidateVotes%
Democratic Sherrod Brown (incumbent) 802,678 100.00
Total votes802,678 100.00%
Ohio Republican primary [191]
PartyCandidateVotes%
Republican Josh Mandel 580,525 63.00
Republican Michael Pryce130,37014.15
Republican Donna Glisman114,18312.39
Republican David Dodt47,2785.13
Republican Eric Gregory47,1235.11
Republican Russell Bliss1,9270.21
Total votes921,406 100.00

In 2006, U.S. Representative Sherrod Brown had defeated two-term incumbent Republican Mike DeWine 56%-44% 2006 election. Over the past six years, he established a very liberal, progressive, and populist record. The National Journal named Brown the most liberal U.S. senator in the past two years. [192] The Washington Post called him a "modern-day Paul Wellstone." One article said "Brown is way to the left of Ohio in general, but probably the only person who could outwork Brown is Portman." [193] Brown was the only candidate the 60 Plus Association targeted in the 2012 election cycle. [194]

Mandel, 34, was elected state treasurer in 2010. Before that, he was a Lyndhurst City Councilman and Ohio State Representative. He was criticized as Ohio Treasurer for not fulfilling his pledge to serve a four-year term and for not attending any of the Board of Deposit monthly meetings. [195] However, Mandel raised a lot of money. He was called a rising star in the Republican Party and was called "the rock star of the party." He was also compared to Marco Rubio. [196]

Mandel's campaign was singled out by the independent fact-checking group Politifact for its "casual relationship with the truth" and its tendency to "double down" after inaccuracies were pointed out. The fact-checking group wrote: "For all the gifts Mandel has, from his compelling personal narrative as an Iraq war veteran to a well-oiled fundraising machine, whoppers are fast becoming a calling card of his candidacy." [197]

Mandel raised $7.2 million through the first quarter of 2012. He had $5.3 million cash on hand, trailing Brown's $6.3 million. [198] However, Mandel benefited from massive support from conservative out-of-state superPACs, which raise unlimited amounts of money from anonymous donors. These outside groups, including Crossroads GPS, aired over $60 million in TV advertising supporting Mandel and attacking Brown, [199] outspending Democratically aligned outside groups by more than five-to-one. [200] Mandel's campaign was aided by over $1 million spent primarily on attack ads by a 501(c)(4) organization called the Government Integrity Fund. The group was funded by anonymous donors and run by lobbyist Tom Norris of Columbus, Ohio-based Cap Square Solutions. [201]

Brown did better than polls right before the election suggested. Instead of winning by two points (which polls right before the election had suggested) Brown won by six points. Republicans could not come back from the huge margins for the Democrats of Cuyahoga County, Franklin County, Lucas County, and Hamilton County.

Ohio general election
PartyCandidateVotes%±%
Democratic Sherrod Brown (incumbent) 2,762,757 50.7 −5.90%
Republican Josh Mandel2,435,74044.7+1.30%
Independent Scott Rupert250,6174.6+4.58%
Majority327,0176.0
Turnout 5,449,414
Democratic hold Swing

Pennsylvania

2012 United States Senate election in Pennsylvania
Flag of Pennsylvania.svg
  2006
2018  
Turnout59.4% (voting eligible) [23]
  Bob Casey, official Senate photo portrait, c2008.jpg Tom Smith PA cropped.jpg
Nominee Bob Casey, Jr. Tom Smith
Party Democratic Republican
Popular vote3,021,3642,509,132
Percentage53.7%44.6%

2012 United States Senate election in Pennsylvania results map by county.svg
Casey:     40–50%     50–60%     60–70%     80–90%
Smith:     40–50%     50–60%     60–70%     70–80%

U.S. senator before election

Bob Casey, Jr.
Democratic

Elected U.S. senator

Bob Casey, Jr.
Democratic

Incumbent Democrat Bob Casey, Jr. won re-election to a second term, defeating Republican nominee Tom Smith, and Libertarian nominee Rayburn Smith.

The primary elections occurred on April 24, 2012, during which the Republicans and Democrats selected nominees for the general election. The Republican primary was a five-way contest. Tom Smith, the eventual nominee, faced David A. Christian, Sam Rohrer, Marc Scaringi, and Steve Welch. The Democratic primary was not heavily contested. Incumbent Bob Casey, Jr., defeated Joseph Vodvarka by a wide margin. The Libertarian Party nominated Rayburn Smith.

Casey led most pre-election polls and eventually defeated his opponents to win re-election to a second term in the U.S. Senate. In so doing, Casey became the first Democratic senator from Pennsylvania elected to a second term in 50 years.

Pennsylvania was considered a battleground state; since the 1970 election of Governor Milton Shapp, partisan control of the governorship had alternated between Democratic and Republican. Additionally, Republicans had controlled the State Senate since 1995, while Democrats assumed control of the State House following the 2006 election, only to lose control in the 2010 election, though the Democrats had won the state in every presidential election from 1992 to 2012.

Pennsylvania Democratic primary [202]
PartyCandidateVotes%
Democratic Bob Casey, Jr. (incumbent) 565,488 80.9
Democratic Joseph Vodvarka133,68319.1
Total votes699,171 100.0

Despite many predictions of a close race, the election was not close. Casey, the incumbent, despite being seen as somewhat vulnerable, went into election night with most analysts thinking he would win. Casey would win by more than expected. This can be traced to several factors. Casey trounced Smith in Philadelphia County home of Philadelphia. Casey also won the surrounding collar counties of, Bucks, Chester, Delaware, and Montgomery, which are seen as vital in statewide elections in Pennsylvania. Casey also performed well in Allegheny County, home of Pittsburgh. Casey also performed well in Erie. Casey also performed strongly in the Scranton area. Smith did well in rural counties, but it wasn't enough to overcome the lead Casey had built in the huge population centers. Casey was sworn in for his second term beginning at noon on January 3, 2013.

Pennsylvania general election [203]
PartyCandidateVotes%±%
Democratic Bob Casey, Jr. (incumbent) 3,021,364 53.7 −4.9%
Republican Tom Smith2,509,11444.6+3.3%
Libertarian Rayburn Smith96,9261.7+1.7%
Majority512,2509.1
Turnout 5,627,404
Democratic hold Swing -4.9%

Rhode Island

Rhode Island election
Flag of Rhode Island.svg
  2006
2018  
Turnout58.0% (voting eligible) [23]
  Senwhitehouse.jpg No image.svg
Nominee Sheldon Whitehouse Barry Hinckley
Party Democratic Republican
Popular vote271,034146,222
Percentage65.0%35.0%

2018 United States Senate election in Rhode Island results map by county.svg
2012 United States Senate election in Rhode Island results map by municipality.svg
Whitehouse:      50–60%     60–70%     70–80%     80–90%
Hinckley:      50–60%

U.S. senator before election

Sheldon Whitehouse
Democratic

Elected U.S. senator

Sheldon Whitehouse
Democratic

Incumbent Democrat Sheldon Whitehouse was re-elected to a second term in a landslide by a 30% margin of 65% – 35%. Whitehouse won 53.52% of the vote in 2006.

Rhode Island Democratic primary
PartyCandidateVotes%
Democratic Sheldon Whitehouse 60,223 100.00
Total votes60,223 100.00
Rhode Island Republican primary
PartyCandidateVotes%
Republican Barry Hinckley 6,890 100.00
Total votes6,890 100.00
Rhode Island general election [204]
PartyCandidateVotes%±%
Democratic Sheldon Whitehouse 271,034 64.81 +11.29%
Republican Barry Hinckley146,22234.97−11.51%
OtherWrite-ins9330.22n/a
Majority124,81229.85+22.81%
Total votes418,189 100.00
Turnout 418,18958
Democratic hold Swing

Tennessee

Tennessee election
Flag of Tennessee.svg
  2006 November 6, 2012 2018  
Turnout61.86% Increase2.svg [205] 11.89 pp
  Bob Corker official Senate photo (cropped).jpg
Nominee Bob Corker Mark Clayton
Party Republican Democratic
Popular vote1,506,443705,882
Percentage64.89%30.41%

2012 United States Senate election in Tennessee results map by county.svg
2012 United States Senate election in Tennessee by Congressional District.svg
Corker:      40–50%     50–60%     60–70%     70–80%     80–90%
Clayton:      50–60%     60–70%

U.S. senator before election

Bob Corker
Republican

Elected U.S. Senator

Bob Corker
Republican

Incumbent Republican Bob Corker won a second term. Corker easily won the Republican primary with 85% of the vote. He faced Democratic Party nominee Mark E. Clayton [206] as well as several third-party candidates and several independents.

Clayton won the Democratic nomination with 30% of the vote, despite raising no money and having a website that was four years out of date. [207] The next day Tennessee's Democratic Party disavowed the candidate over his active role in the Public Advocate of the United States, which they described as a "known hate group". They blamed his victory among candidates for whom the TNDP provided little forums to become known on the fact that his name appeared first on the ballot, and said they would do nothing to help his campaign, urging Democrats to vote for "the write-in candidate of their choice" in November. [208] One of the Democratic candidates, Larry Crim, filed a petition seeking to offer the voters a new primary in which to select a Democratic nominee among the remaining candidates the party had affirmed as bona fide and as a preliminary motion sought a temporary restraining order against certification of the results, but after a judge denied the temporary order Crim withdrew his petition [209]

Tennessee Republican primary [210]
PartyCandidateVotes%
Republican Bob Corker (incumbent) 389,483 85.25%
Republican Zach Poskevich28,2996.19%
Republican Fred Anderson15,9423.49%
Republican Mark Twain Clemens11,7882.58%
Republican Brenda Lenard11,3782.49%
Total votes456,890 100.00%
Democratic primary results [210]
PartyCandidateVotes%
Democratic Mark E. Clayton 48,126 29.99%
Democratic Gary Gene Davis24,78915.45%
Democratic Park Overall24,26315.12%
Democratic Larry Crim17,38310.83%
Democratic Benjamin Roberts16,36910.20%
Democratic David Hancock16,16710.08
Democratic Thomas Owens13,3668.33
Total votes160,463 100.00
Tennessee general election [211]
PartyCandidateVotes%±%
Republican Bob Corker (incumbent) 1,506,443 64.89% +14.18%
Democratic Mark Clayton705,88230.41%−17.59%
Green Martin Pleasant38,4721.66%+1.52%
Independent Shaun Crowell20,9360.90%N/A
Constitution Kermit Steck18,6200.80%N/A
Independent James Higdon8,0850.35%N/A
Independent Michael Joseph Long8,0800.35%N/A
Independent Troy Stephen Scoggin7,1480.31%N/A
Independent David Gatchell6,5230.28%N/A
n/a Write-ins1,2880.05%N/A
Total votes2,321,477 100.00% N/A
Republican hold

Texas

Texas election
Flag of Texas.svg
  2006
2018  
Turnout49.7% (voting eligible) [23]
  Ted Cruz, official portrait, 113th Congress (cropped 2).jpg Paul Sadler.JPG
Nominee Ted Cruz Paul Sadler
Party Republican Democratic
Popular vote4,440,1373,194,927
Percentage56.6%40.5%

2012 United States Senate election in Texas results map by county.svg
Cruz:     40–50%     50–60%     60–70%     70–80%     80–90%     >90%
Sadler:     40–50%     50–60%     60–70%     70–80%     80–90%

U.S. senator before election

Kay Bailey Hutchison
Republican

Elected U.S. senator

Ted Cruz
Republican

Incumbent Republican Kay Bailey Hutchison retired instead of running for re-election to a fourth full term. Libertarian John Jay Myers was elected by nomination at the Texas Libertarian Party State Convention on June 8, 2012. After the first round of primary on May 29, 2012, a runoff was held July 31, 2012, for both the Democratic and Republican parties, with Paul Sadler and Ted Cruz winning, respectively. Cruz won the open seat.

Democratic runoff results [212]
PartyCandidateVotes%
Democratic Paul Sadler 148,940 63.03
Democratic Grady Yarbrough87,36536.97
Total votes236,305 100.00
Texas Republican primary runoff [213]
PartyCandidateVotes%
Republican Ted Cruz 631,812 56.82
Republican David Dewhurst480,12643.18
Total votes1,111,938 100.00
Texas general election [214]
PartyCandidateVotes%±%
Republican Ted Cruz 4,440,137 56.46 −5.23%
Democratic Paul Lindsey Sadler3,194,92740.62+4.58%
Libertarian John Jay Myers162,3542.06−0.20%
Green David Collins67,4040.86+0.86%
Majority1,245,21015.84
Turnout 7,864,822
Republican hold Swing

Utah

2012 United States Senate election in Utah
Flag of Utah.svg
  2006
2018  
Turnout55.4% (voting eligible) [23]
  Orrin Hatch, official 110th Congress photo.jpg Scott Howell.jpg
Nominee Orrin Hatch Scott Howell
Party Republican Democratic
Popular vote595,972275,880
Percentage65.2%30.2%

2012 United States Senate election in Utah results map by county.svg
County results
Hatch:     50–60%     60–70%     70–80%     80–90%
Howell:     40–50%

U.S. senator before election

Orrin Hatch
Republican

Elected U.S. senator

Orrin Hatch
Republican

Incumbent Republican Orrin Hatch won re-election to a seventh term against former state senator and IBM executive, Scott Howell the Democratic candidate. [215]

In 2006, incumbent Orrin Hatch won re-election to a sixth term. In 2008, Jason Chaffetz defeated the incumbent Republican U.S. Representative, Chris Cannon, in the 2008 primary for Utah's 3rd congressional district. In 2010, Mike Lee defeated Bob Bennett in the 2010 Utah Senate election. [216] In March 2011, just-elected U.S. senator Mike Lee said he will not endorse Hatch in the primary. [217] In May 2011, Chaffetz told several Utah political insiders that he planned to run, but he would not make an official decision until after Labor Day of 2011. [218]

In June 2011, prominent conservative radio talk show host Mark Levin endorsed Hatch. [219] The fiscally conservative 501(c)4 organization Club for Growth encouraged Chaffetz to run. The group cited Hatch's support for the Troubled Asset Relief Program, State Children's Health Insurance Program, No Child Left Behind Act, Bridge to Nowhere, and other votes among the reasons why they opposed his re-election. [220] In an interview with Politico , Chaffetz stated, "After 34 years of service, I think most Utahans want a change. They want to thank him for his service, but it's time to move on. And for me personally, I think he's been on the wrong side of a host of major issues." The congressman cited Hatch's vote in favor of Equal Opportunity to Serve Act and the Health Equity and Access Reform Today Act of 1993. [221] However, Chaffetz ultimately decided against a run.

Democratic convention results [222]
PartyCandidateVotes%
Democratic Scott Howell - 63.0
Democratic Pete Ashdown-37.0
Total votes- 100.0
Utah Republican primary [223]
PartyCandidateVotes%
Republican Orrin Hatch (incumbent) 146,394 66.0
Republican Dan Liljenquist73,66834.0
Total votes220,062 100.0
Utah general election
PartyCandidateVotes%±%
Republican Orrin Hatch (incumbent) 595,972 65.21 +2.85%
Democratic Scott Howell275,88030.19−0.87%
Constitution Shaun McCausland28,3673.10−0.67%
Justice Daniel Geery7,4440.81
IndependentBill Barron6,2610.69
Majority320,09235.02
Turnout 913,92460.40
Republican hold Swing

Note: The ±% column reflects the change in total number of votes won by each party from the previous election. Neither the vote shares nor the turnout figure account for write-ins. Turnout percentage is the portion of registered voters who voted (1,513,241 as of June 11, 2012) [224]

Vermont

Vermont election
Flag of Vermont.svg
  2006
2018  
Turnout63.47% (voting eligible) [23]
  Bernie Sanders.jpg 1985 John MacGovern Middlesex Representative Massachusetts.jpg
Nominee Bernie Sanders John MacGovern
Party Independent Republican
Popular vote207,84872,898
Percentage71.0%24.9%

2012 United States Senate election in Vermont results map by county.svg
2012 United States Senate election in Vermont results map by municipality.svg
Sanders:     50–60%     60–70%     70–80%     80–90%

U.S. senator before election

Bernie Sanders
Independent

Elected U.S. senator

Bernie Sanders
Independent

Incumbent Independent Bernie Sanders won re-election to a second term in a landslide, capturing nearly three-quarters of the vote. Sanders also received the nomination of the Vermont Progressive Party, but declined both the Democratic and Progressive nominations after the primary. [225]

Vermont Republican primary [226]
PartyCandidateVotes%
Republican John MacGovern 6,343 75.4
Republican H. Brooke Paige 2,07324.6
Total votes8,416 100.0

[227]

Vermont general election
PartyCandidateVotes%±%
Independent Bernie Sanders (incumbent)(a)207,848 71.00 +5.59%
Republican John MacGovern 72,89824.90−7.46%
Marijuana Cris Ericson 5,9242.02+1.36%
Liberty Union Pete Diamondstone 2,5110.86+0.55%
Peace and ProsperityPeter Moss2,4520.84+0.26%
VoteKISSLaurel LaFramboise8770.30
No party Write-ins 2520.09
Margin of victory134,95046.10+13.06%
Turnout 292,76263.47(b)+2.95%
Independent hold Swing

Note: The ±% column reflects the change in total number of votes won by each party or independent candidate.

Virginia

Virginia election
Flag of Virginia.svg
  2006
2018  
Turnout66.4% (voting eligible) [23]
  Tim Kaine, official 113th Congress photo portrait.jpg George Allen official portrait.jpg
Nominee Tim Kaine George Allen
Party Democratic Republican
Popular vote2,010,0671,785,542
Percentage52.9%47.0%

2012 United States Senate election in Virginia results map by county.svg
County and independent city results
Kaine:      50–60%     60–70%     70–80%     80–90%
Allen:      50–60%     60–70%     70–80%

U.S. senator before election

Jim Webb
Democratic

Elected U.S. senator

Tim Kaine
Democratic

Incumbent Democrat Jim Webb retired instead of running for re-election to a second term. [228] Former Governor of Virginia Tim Kaine was unopposed for the Democratic nomination [229] and the Republican party nominated former senator and Governor George Allen through a primary on June 12, 2012. [230] Kaine won the open seat.

Virginia Republican primary [231]
PartyCandidateVotes%
Republican George Allen 167,607 65.5
Republican Jamie Radtke59,00523.0
Republican Bob Marshall17,3026.8
Republican E.W. Jackson12,0834.7
Total votes255,997 100.0

Once Democrat Jim Webb retired, many Democratic candidates were speculated. These included U.S. Congressmen Rick Boucher, [232] Gerry Connolly, [233] Glenn Nye, [234] Tom Perriello [235] and Bobby Scott. [236] However, they all declined and encouraged Kaine to run for the seat, believing he would be by far the most electable candidate. Courtney Lynch, former Marine Corps Officer and Fairfax business consultant [237] and Julien Modica, former CEO of the Brain Trauma Recovery & Policy Institute, [237] eventually withdrew from the election, allowing Kaine to be unopposed in the Democratic primary.

Virginia general election [238]
PartyCandidateVotes%±%
Democratic Tim Kaine 2,010,067 52.87 +3.28%
Republican George Allen 1,785,54246.96−2.24%
Write-ins6,5870.17+0.07%
Majority224,5255.91+5.52%
Turnout 3,802,196
Democratic hold Swing

Washington

Washington election
Flag of Washington.svg
  2006
2018  
Turnout64.1% (voting eligible) [23]
  Maria Cantwell 113th Congress (cropped).jpg Michael Baumgartner crop (cropped).jpg
Nominee Maria Cantwell Michael Baumgartner
Party Democratic Republican
Popular vote1,855,4931,213,924
Percentage60.5%39.5%

2012 United States Senate election in Washington results map by county.svg
Cantwell:      40–50%     50–60%     60–70%     70–80%
Baumgartner:      40–50%     50–60%     60–70%

U.S. senator before election

Maria Cantwell
Democratic

Elected U.S. senator

Maria Cantwell
Democratic

Incumbent Democrat Maria Cantwell won re-election to a third term in a landslide.

Washington blanket primary [239]
PartyCandidateVotes%
Democratic Maria Cantwell (incumbent) 626,360 55.42
Republican Michael Baumgartner 344,729 30.50
Republican Art Coday59,2555.24
Democratic Timothy Wilson26,8502.38
Republican Chuck Jackson21,8701.94
Republican Glenn R. Stockwell21,7311.92
Republican Mike the Mover16,4591.46
Reform Will Baker12,8651.14
Total votes1,130,119 100.00
Washington general election [240]
PartyCandidateVotes%±%
Democratic Maria Cantwell (incumbent) [241] 1,855,493 60.45 +3.64%
Republican Michael Baumgartner1,213,92439.55−0.36%
Majority641,56920.90
Turnout 3,069,41781.25

West Virginia

West Virginia election
Flag of West Virginia.svg
2018  
Turnout46.3% (voting eligible) [23]
  Joe Manchin official portrait 112th Congress.jpg John Raese.jpg
Nominee Joe Manchin John Raese
Party Democratic Republican
Popular vote394,532237,825
Percentage60.6%36.5%

2012 United States Senate election in West Virginia results map by county.svg
Manchin:      40–50%     50–60%     60–70%     70–80%
Raese:      50–60%     60–70%

U.S. senator before election

Joe Manchin
Democratic

Elected U.S. senator

Joe Manchin
Democratic

Incumbent Democrat Joe Manchin won re-election to a first full term.

Robert Byrd held this seat in the U.S. Senate since 1959, after having served in the House of Representatives since 1953, making him the longest-serving person in Congress. Byrd led his party in the Senate from 1977 to 1989, as Majority Leader or Minority Leader. Afterward, as the most senior Democrat in the Senate, he served as President pro tempore of the Senate whenever his party was in the majority, including at the time of his death. After Byrd's death, West Virginia Secretary of State Natalie Tennant initially announced that a special election would be held the same day as the regular election for the six-year term. However, that special election was rescheduled to 2010 for it to coincide with the 2010 mid-term elections. Governor Joe Manchin made a temporary appointment of Carte Goodwin to the vacant seat. Goodwin was later replaced by Manchin who won the 2010 special election.

West Virginia Democratic primary [242]
PartyCandidateVotes%
Democratic Joe Manchin (incumbent) 163,891 79.9
Democratic Sheirl Fletcher41,11820.1
Total votes205,009 100

Raese filed a rematch against Manchin, arguing that he now had more material to criticize Manchin for. One example is how Manchin lost his long-time endorsement from West Virginians for Life because of his vote against defunding Planned Parenthood, the nation's largest abortion provider. [243] Another example is how he is undecided about whether or not to support Obama's re-election campaign. [244] Senior Obama campaign advisor David Axelrod commented in response, "His concern is about his own political well-being." [245] In addition, he voted against U.S. Congressman Paul Ryan's Republican budget. [246]

Raese wrote an op-ed in the Charleston Gazette saying about Manchin, "Yes, he'll talk like a conservative and act like he's fiscally responsible to appeal to more moderate voters, but under that outward appearance of a lovable rube is the heart of a tax-and-spend liberal." [244]

Raese continued to make controversial statements. In April 2012, he equated smoking bans with Adolf Hitler's yellow badge. He said "in Monongalia County now, I have to put a huge sticker on my buildings to say this is a smoke-free environment. This is brought to you by the government of Monongalia County. Okay? Remember Hitler used to put Star of David on everybody's lapel, remember that? Same thing." That same day, he referred to President Franklin D. Roosevelt as "Fidel Roosevelt." [247] Raese didn't apologize for his statements on Hitler saying "I am not going to be intimidated by a bunch of bullshit. I'm not apologizing to anybody or any organization. It's my perfect right to make a speech about meaningful subject matters in this country." [248] He also called rocker Ted Nugent a "patriot" for criticizing President Barack Obama. [249]

West Virginia general election
PartyCandidateVotes%±%
Democratic Joe Manchin 394,532 60.55 +7.08%
Republican John Raese237,82536.50−6.90%
Mountain Bob Henry Baber19,2312.95+1.03%
Margin of victory156,70724.05+13.98%
Turnout 651,58852.79+9.21%
Democratic hold Swing

Note: The ±% column reflects the change in total number of votes won by each party from the previous (special) election. Neither the vote shares nor the turnout figure account for write-ins. Turnout percentage is the portion of registered voters (1,234,367 as of January 10, 2012) [250] who voted.

Wisconsin

Wisconsin election
Flag of Wisconsin.svg
  2006
2018  
Turnout72.5% (voting eligible) [23]
  Tammy Baldwin, official photo portrait, color (cropped).jpg Tommy Thompson 1.jpg
Nominee Tammy Baldwin Tommy Thompson
Party Democratic Republican
Popular vote1,547,1041,380,126
Percentage51.4%45.9%

2012 United States Senate election in Wisconsin results map by county.svg
Baldwin:      40–50%     50–60%     60–70%     70–80%
Thompson:      40–50%     50–60%     60–70%

U.S. senator before election

Herb Kohl
Democratic

Elected U.S. senator

Tammy Baldwin
Democratic

Incumbent Democrat Herb Kohl retired instead of running for re-election to a fifth term. Democratic Congresswoman Tammy Baldwin of Wisconsin's 2nd congressional district ran unopposed for her party's nomination. The Republican nominee was former Governor of Wisconsin and former Secretary of Health and Human Services Tommy Thompson, who won with a plurality in a four-way race. In the general election, Baldwin defeated Thompson and won the open seat. She became the first woman elected to represent Wisconsin in the Senate and the first openly gay U.S. senator in history. This is also the first time Thompson lost a statewide race.

Democratic primary results [251]
PartyCandidateVotes%
Democratic Tammy Baldwin 185,265 99.77
Democratic Write ins4240.23
Total votes185,689 100
Wisconsin Republican primary [251]
PartyCandidateVotes%
Republican Tommy Thompson 197,928 34.0
Republican Eric Hovde179,55730.8
Republican Mark Neumann132,78622.8
Republican Jeff Fitzgerald71,87112.3
Republican Write ins2440.04
Total votes582,630 100
Wisconsin general election [252]
PartyCandidateVotes%±%
Democratic Tammy Baldwin 1,547,104 51.41 −15.9
Republican Tommy Thompson 1,380,12645.86+16.4
Libertarian Joseph Kexel62,2402.07+2.1
Independent Nimrod Allen, III16,4550.55n/a
OtherScattered3,4860.12+0.1
Majority166,9785.55
Turnout 3,009,41172.5
Democratic hold Swing

Wyoming

Wyoming election
Flag of Wyoming.svg
2018  
Turnout58.9% (voting eligible) [23]
  John Barrasso official portrait 112th Congress.jpg Blank2x3.svg
Nominee John Barrasso Tim Chesnut
Party Republican Democratic
Popular vote184,53152,596
Percentage75.9%21.6%

2012 United States Senate election in Wyoming results map by county.svg
County results
Barrasso:     50–60%     60–70%     70–80%     80–90%

U.S. senator before election

John Barrasso
Republican

Elected U.S. senator

John Barrasso
Republican

Incumbent Republican John Barrasso won re-election to a first full term.

Republican state senator John Barrasso was appointed to the U.S. Senate on June 22, 2007, by then-governor Dave Freudenthal after U.S. senator Craig Thomas died on June 4, 2007. [253] John Barrasso defeated Nick Carter with 73.4% of the vote in the 2008 special U.S. senatorial election to serve the remainder of the senatorial term. Barrasso remained highly popular in the state with 69% of voters approving of him. [254]

Wyoming Republican primary [255]
PartyCandidateVotes%
Republican John Barrasso (incumbent) 73,516 89.9
Republican Thomas Bleming5,0806.2
Republican Emmett Mavy2,8733.5
Republican Write-in2790.3
Total votes81,748 100
Wyoming Democratic primary [255]
PartyCandidateVotes%
Democratic Tim Chesnut 9,173 53.7
Democratic Al Hamburg4,63027.1
Democratic William Bryk3,04717.8
Democratic Write-in2221.3
Total votes17,072 100
2012 United States Senate election in Wyoming
PartyCandidateVotes%±%
Republican John Barrasso (incumbent) 184,531 75.90 +2.55%
Democratic Tim Chesnut52,59621.60−4.93%
Wyoming CountryJoel Otto6,1382.60
Majority131,93554.30+7.47%
Turnout 243,265
Republican hold Swing

See also

Notes

    1. Although Joe Lieberman (CT) was elected in 2006 on the Connecticut for Lieberman ticket, most sources (including himself) refer to him as an independent Democrat and he is included here as an independent.
    2. Both independents caucused with the Democrats.
    3. After the 2020 elections, the Senate was split 50-50 and a Democratic vice president was elected to break ties, giving Democrats a technical majority in the Senate.
    4. In Indiana, Richard Lugar lost renomination for another term, Richard Mourdock became the party's new nominee.
    5. Includes the interim appointee who won election to finish the term.
    6. Appointee elected
    7. Senator Joe Lieberman was originally elected as a Democrat in 1988 and was re-elected in 1994 and 2000. He lost the Democratic primary in 2006, changed his affiliation as Independent, caucused with the Democratic party, and was re-elected that year.
    8. Officially, United States Marijuana Party in Vermont, which is not an affiliate of the United States Marijuana Party
    9. Virginia was the "tipping point" state.
    10. The last elections for this group of senators were in 2006, except for those elected in a special election or who were appointed after the resignation or passing of a sitting senator, as noted.
    11. Democrat Ted Kennedy won with 69.5% of the vote in 2006, but died on August 25, 2009.
    12. Republican Trent Lott won with 63.7% of the vote in 2006, but resigned on December 18, 2007.
    13. Republican John Ensign won with 55.4% of the vote in 2006, but resigned on May 3, 2011.
    14. Democrat Hillary Clinton won with 67.0% of the vote in 2006, but resigned on January 21, 2009 to become United States Secretary of State.
    15. Democrat Robert Byrd won with 64.4% of the vote in 2006, but died on June 28, 2010.
    16. Republican Craig L. Thomas won with 69.99% of the vote in 2006, but died on June 4, 2007.

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