2018 United States Senate elections

Last updated

2018 United States Senate elections
Flag of the United States (Pantone).svg
  2016 November 6, 2018
November 27 (Mississippi runoff)
2020  
  2017 (AL)

35 of the 100 seats in the United States Senate
51 seats needed for a majority
 Majority partyMinority party
  Mitch McConnell portrait 2016 (3x4a).jpg Chuck Schumer official photo (3x4a).jpg
Leader Mitch McConnell Chuck Schumer
Party Republican Democratic
Leader sinceJanuary 3, 2007January 3, 2017
Leader's seat Kentucky New York
Seats before5147
Seats after5345
Seat changeIncrease2.svg 2Decrease2.svg 2
Popular vote34,687,87552,224,867 [a] [b]
Percentage38.7%58.2%
Seats up924
Races won1122

 Third party
 
Party Independent
Seats before2 [c]
Seats after2
Seat changeSteady2.svg
Popular vote808,370 [d]
Percentage.9%
Seats up2
Races won2

2018 United States Senate elections results map.svg
Results of the elections:
     Democratic gain     Republican gain
     Democratic hold     Republican hold
     Independent hold
     No election
Rectangular inset (Minn. & Miss.): both seats up for election

Majority Leader before election

Mitch McConnell
Republican

Elected Majority Leader

Mitch McConnell
Republican

The 2018 United States Senate elections were held on November 6, 2018. Among the 100 seats, the 33 of Class 1 were contested in regular elections while 2 others were contested in special elections due to Senate vacancies in Minnesota and Mississippi. The regular election winners were elected to 6-year terms running from January 3, 2019, to January 3, 2025. Senate Democrats had 26 seats up for election (including the seats of 2 Independents who caucus with them), while Senate Republicans had 9 seats up for election.

Contents

To maintain their working majority of 50 senators and their party's vice president's tie-breaking vote, Republicans could only afford a net loss of 1 seat in these elections. The Republicans had a 52–48 majority after the 2016 elections, but they lost a seat in Alabama after Jeff Sessions resigned to become U.S. attorney general and Doug Jones, a Democrat, won in the subsequent special election. 3 Republican-held seats were open as a result of retirements in Tennessee, Utah, and Arizona. Although every Democratic incumbent ran for re-election, Democrats faced an extremely unfavorable map, defending 26 seats, of which 10 were in states won by Donald Trump in the 2016 presidential election, and 5 of those where Trump had won by more than 10%. Republicans, however, only had to defend 9 seats, of which only 1 was in a state won by Hillary Clinton in 2016.

The Republicans increased their majority by defeating Democratic incumbents in Florida, Indiana, Missouri, and North Dakota, and holding the open seats in Tennessee and Utah. Democrats won 2 Republican-held seats, defeating an incumbent in Nevada and winning the open seat in Arizona. This was the first time Republicans gained Class 1 Senate seats since 1994.

The results for this election cycle were the only significant gains made by the Republicans in what was otherwise characterized as a "blue wave" election. The Republican gains in the Senate and the Democratic gains in the House marked the first midterm election cycle since 1970 in which the president's party made net gains in one chamber of Congress while suffering net losses in the other, [3] which also occurred in 1914, 1962, and 2022. This was also the first midterm election cycle since 2002 in which any incumbents of the non-presidential party lost re-election. The number of defeated non-presidential party incumbents (4) was the most since the 1934 mid-terms. [4] To date, this remains the last time that Democrats won a Senate election in Montana, Ohio, and West Virginia.

Partisan composition

Among the 33 Class 1 Senate seats up for regular election in 2018, twenty-three were held by Democrats, two by independents who caucused with the Senate Democrats and eight by Republicans. Class Two seats in Minnesota and Mississippi held by interim appointees were also up for election; both incumbent appointees sought election to finish their unexpired terms.

Democrats targeted Republican-held Senate seats in Arizona (open seat) and Nevada. [5] Seats in Texas, [6] Mississippi (at least one of the two seats) and Tennessee (open seat) [7] were also competitive for the Democrats. Republicans targeted Democratic-held seats in Indiana, Missouri, Montana, North Dakota and West Virginia, all of which were won by Republicans in both the 2012 and 2016 presidential elections. [8] Seats in Florida, Ohio, Pennsylvania, Wisconsin and Michigan, all of which were won by Obama in 2008 and 2012 but by Trump in 2016, were also targeted by Republicans. [5] [9] The Democratic-held seat in New Jersey was also considered unexpectedly competitive due to corruption allegations surrounding the Democratic incumbent.

The map was widely characterized as extremely unfavorable to Democrats, as Democrats were defending 26 states while Republicans were defending nine. Of these seats, Democrats were defending ten in states won by Donald Trump in the 2016 presidential election, while Republicans were only defending one seat in a state won by Hillary Clinton in 2016. [10] [11] [12] According to FiveThirtyEight , Democrats faced the most unfavorable Senate map in 2018 that any party has ever faced in any election. [13] [14]

Results summary

PartiesTotal
Democratic Republican Independent Libertarian Green Other
Last elections (2016) 46522000100
Before these elections47512000100
Not up2342065
Class 2 (20142020)1120031
Class 3 (20162022)1222034
Up249235
Class 1 (2012→2018)238233
Special: Class 21102
Regular elections
Incumbent retired0303
Held by same party22
Replaced by other partyDecrease2.svg 1 Republican replaced by Increase2.svg 1 DemocratSteady2.svgSteady2.svgSteady2.svgSteady2.svg1
Result1200003
Incumbent ran235230
Won re-election194225
Lost re-electionDecrease2.svg 1 Republican replaced by Increase2.svg 1 Democrat
Decrease2.svg 4 Democrats replaced by Increase2.svg 4 Republicans
Steady2.svgSteady2.svgSteady2.svgSteady2.svg5
Result208200030
Special elections
Appointee ran112
Appointee elected112
Result1100002
Total elected2211200035
Net gain/lossDecrease2.svg 2Increase2.svg 2Steady2.svgSteady2.svgSteady2.svgSteady2.svg2
Nationwide vote52,224,86734,722,926808,370590,051200,5991,262,76590,473,222
Share58.17%38.67%0.90%0.66%0.22%1.41%100%
Result45532000100

Source: Clerk of the U.S. House of Representatives. [1]

Change in composition

Each block represents one of the one hundred seats in the Senate. "D#" is a Democratic senator, "I#" is an independent senator and "R#" is a Republican senator. Arranged so parties are separated and a majority is clear by crossing the middle.

Before the elections

Each block indicates an incumbent senator's actions going into the election. Some "Ran" for re-election, some "Retired," and those without a note were not up for election this cycle. Before the elections, Republicans held 51 seats, Democrats held 47, and Independents held 2.

After the 2017 Senate special election in Alabama on the start of the second session in the 115th Congress.

D1
Ala.
Gain
D2D3D4D5D6D7D8D9D10
D20D19D18D17D16D15D14D13D12D11
D21D22D23D24
Calif.
Ran
D25
Conn.
Ran
D26
Del.
Ran
D27
Fla.
Ran
D28
Hawaii
Ran
D29
Ind.
Ran
D30
Md.
Ran
D40
N.D.
Ran
D39
N.Y.
Ran
D38
N.M.
Ran
D37
N.J.
Ran
D36
Mont.
Ran
D35
Mo.
Ran
D34
Minn. (sp)
Ran
D33
Minn. (reg)
Ran
D32
Mich.
Ran
D31
Mass.
Ran
D41
Ohio
Ran
D42
Penn.
Ran
D43
R.I.
Ran
D44
Va.
Ran
D45
Wash.
Ran
D46
W.Va.
Ran
D47
Wis.
Ran
I1
Maine
Ran
I2
Vt.
Ran
R51
Wyo.
Ran
Majority →
R41R42R43
Ariz.
Retired
R44
Miss. (reg)
Ran
R45
Miss. (sp)
Ran
R46
Neb.
Ran
R47
Nev.
Ran
R48
Tenn.
Retired
R49
Texas
Ran
R50
Utah
Retired
R40R39R38R37R36R35R34R33R32R31
R21R22R23R24R25R26R27R28R29R30
R20R19R18R17R16R15R14R13R12R11
R1R2R3R4R5R6R7R8R9R10

After the elections

Some senators were "Re-elected," some were a "Gain" in the seat from the other party (either by beating an incumbent or by winning an open seat), some were a "Hold" by the same party but with a different senator, and those without a note were not up for election this year.

After these elections, Democrats had 45 seats, independents had 2, and Republicans had 53.

D1D2D3D4D5D6D7D8D9D10
D20D19D18D17D16D15D14D13D12D11
D21D22D23D24
Calif.
Re-elected
D25
Conn.
Re-elected
D26
Del.
Re-elected
D27
Hawaii
Re-elected
D28
Md.
Re-elected
D29
Mass.
Re-elected
D30
Mich.
Re-elected
D40
Va.
Re-elected
D39
R.I.
Re-elected
D38
Pa.
Re-elected
D37
Ohio
Re-elected
D36
N.Y.
Re-elected
D35
N.M.
Re-elected
D34
N.J.
Re-elected
D33
Mont.
Re-elected
D32
Minn. (sp)
Elected [e]
D31
Minn. (reg)
Re-elected
D41
Wash.
Re-elected
D42
W.Va.
Re-elected
D43
Wis.
Re-elected
D44
Ariz.
Gain
D45
Nev.
Gain
I1
Maine
Re-elected
I2
Vt.
Re-elected
R53
N.D.
Gain
R52
Mo.
Gain
R51
Ind.
Gain
Majority →
R41R42R43
Miss. (reg)
Re-elected
R44
Miss. (sp)
Elected [e]
R45
Neb.
Re-elected
R46
Tenn.
Hold
R47
Tex.
Re-elected
R48
Utah
Hold
R49
Wyo.
Re-elected
R50
Fla.
Gain
R40R39R38R37R36R35R34R33R32R31
R21R22R23R24R25R26R27R28R29R30
R20R19R18R17R16R15R14R13R12R11
R1R2R3R4R5R6R7R8R9R10
Key:
D# Democratic
R# Republican
I# Independent, caucusing with Democrats

Final pre-election predictions

Several sites and individuals publish predictions of competitive seats. These predictions look at factors such as the strength of the incumbent (if the incumbent is running for re-election) and the other candidates, and the state's partisan lean (reflected in part by the state's Cook Partisan Voting Index rating). The predictions assign ratings to each seat, indicating the predicted advantage that a party has in winning that seat.

Most election predictors used:

ConstituencyIncumbent2018 election ratings
State PVI [15] SenatorLast
election [f]
Cook
Oct 26,
2018
[16]
IE
Nov 1,
2018
[17]
Sabato
Nov 5,
2018
[18]
NYT
Nov 5,
2018
[19]
Fox News [g]
Nov 5,
2018
[20]
CNN
Nov 2,
2018
[21]
RCP
Nov 5,
2018
[22]
Daily Kos
Nov 5,
2018
[23]
Politico
Nov 5,
2018
[24]
538 [h]
Nov 6,
2018
[25]
Result
Arizona R+5 Jeff Flake
(retiring)
49.2% R Tossup Tilt D (flip)Lean D (flip)Tossup Tossup Tossup Tossup Tossup Tossup Lean D (flip) Sinema
50.0% D (flip)
California D+12 Dianne Feinstein 62.5% D Safe D Safe D Safe D Safe D Likely D Safe D Safe D Safe D Safe D Safe DFeinstein
54.2% D
Connecticut D+6 Chris Murphy 54.8% D Safe D Safe D Safe D Safe D Likely D Safe D Safe D Safe D Safe D Safe DMurphy
59.5% D
Delaware D+6 Tom Carper 66.4% D Safe D Safe D Safe D Safe D Likely D Safe D Safe D Safe D Safe D Safe DCarper
60.0% D
Florida R+2 Bill Nelson 55.2% D Tossup Tilt D Lean D Tossup Tossup Tossup Tossup Tossup Tossup Lean D Scott
50.1% R (flip)
Hawaii D+18 Mazie Hirono 62.6% D Safe D Safe D Safe D Safe D Likely D Safe D Safe D Safe D Safe D Safe DHirono
71.2% D
Indiana R+9 Joe Donnelly 50.0% D Tossup Tossup Lean R (flip)Tossup Tossup Tossup Tossup Tossup Tossup Lean D Braun
50.7% R (flip)
Maine D+3 Angus King 52.9% I Safe ISafe ISafe ISafe ILikely ISafe ISafe ISafe ISafe ISafe IKing
54.3% I
Maryland D+12 Ben Cardin 56.0% D Safe D Safe D Safe D Safe D Likely D Safe D Safe D Safe D Safe D Safe DCardin
64.9% D
Massachusetts D+12 Elizabeth Warren 53.7% D Safe D Safe D Safe D Safe D Likely D Safe D Safe D Safe D Safe D Safe DWarren
60.3% D
Michigan D+1 Debbie Stabenow 58.8% D Likely D Safe D Safe D Likely D Likely D Likely D Lean D Safe D Likely D Safe DStabenow
52.3% D
Minnesota
(regular)
D+1 Amy Klobuchar 65.2% D Safe D Safe D Safe D Safe D Likely D Safe D Safe D Safe D Safe D Safe DKlobuchar
60.3% D
Minnesota
(special)
D+1 Tina Smith Appointed
(2018) [i]
Lean D Likely D Likely D Lean D Likely D Likely D Lean D Likely D Likely D Likely DSmith
53.0% D
Mississippi
(regular)
R+9 Roger Wicker 57.1% R Safe R Safe R Safe R Safe R Likely R Safe R Safe R Safe R Safe R Safe RWicker
58.5% R
Mississippi
(special) [j]
R+9 Cindy Hyde-Smith Appointed
(2018) [k]
Lean R Safe R Likely R Lean R Lean R Safe R Likely R Likely R Likely R Lean RHyde-Smith
53.6% R
Missouri R+9 Claire McCaskill 54.8% D Tossup Tilt R (flip)Lean R (flip)Tossup Tossup Tossup Tossup Tossup Tossup Tossup Hawley
51.4% R (flip)
Montana R+11 Jon Tester 48.6% D Tossup Tilt D Lean D Tossup Lean D Lean D Tossup Tossup Lean D Likely DTester
50.3% D
Nebraska R+14 Deb Fischer 57.8% R Safe R Safe R Safe R Safe R Likely R Safe R Safe R Safe R Safe R Safe RFischer
57.7% R
Nevada D+1 Dean Heller 45.9% R Tossup Tilt D (flip)Lean D (flip)Tossup Tossup Tossup Tossup Tossup Tossup Tossup Rosen
50.4% D (flip)
New Jersey D+7 Bob Menendez 58.9% D Tossup Likely D Likely D Tossup Lean D Lean D Lean D Lean D Lean D Likely DMenendez
54.0% D
New Mexico D+3 Martin Heinrich 51.0% D Safe D Safe D Safe D Safe D Likely D Safe D Safe D Safe D Safe D Safe DHeinrich
54.1% D
New York D+11 Kirsten Gillibrand 72.2% D Safe D Safe D Safe D Safe D Likely D Safe D Safe D Safe D Safe D Safe DGillibrand
67.0% D
North Dakota R+16 Heidi Heitkamp 50.2% D Lean R (flip)Lean R (flip)Lean R (flip)Lean R (flip)Likely R (flip)Lean R (flip)Lean R (flip)Lean R (flip)Lean R (flip)Lean R (flip) Cramer
55.4% R (flip)
Ohio R+3 Sherrod Brown 50.7% D Likely D Safe D Likely D Likely D Likely D Likely D Lean D Likely D Likely D Safe DBrown
53.4% D
Pennsylvania EVEN Bob Casey Jr. 53.7% D Likely D Safe D Safe D Likely D Likely D Likely D Likely D Safe D Likely D Safe DCasey
55.7% D
Rhode Island D+10 Sheldon Whitehouse 64.8% D Safe D Safe D Safe D Safe D Likely D Safe D Safe D Safe D Safe D Safe DWhitehouse
61.5% D
Tennessee R+14 Bob Corker
(retiring)
64.9% R Tossup Lean R Lean R Tossup Lean R Tossup Tossup Lean R Lean R Likely R Blackburn
54.7% R
Texas R+8 Ted Cruz 56.5% R Tossup Likely R Lean R Tossup Lean R Lean R Lean R Lean R Lean R Likely RCruz
50.9% R
Utah R+20 Orrin Hatch
(retiring)
65.3% R Safe R Safe R Safe R Safe R Likely R Safe R Safe R Safe R Safe R Safe R Romney
62.6% R
Vermont D+15 Bernie Sanders 71.0% I Safe ISafe ISafe ISafe ILikely ISafe ISafe ISafe ISafe ISafe ISanders
67.4% I
Virginia D+1 Tim Kaine 52.3% D Safe D Safe D Safe D Safe D Likely D Safe D Safe D Safe D Safe D Safe DKaine
57.0% D
Washington D+7 Maria Cantwell 60.5% D Safe D Safe D Safe D Safe D Likely D Safe D Safe D Safe D Safe D Safe DCantwell
58.4% D
West Virginia R+20 Joe Manchin 60.6% D Lean D Tilt D Lean D Lean D Lean D Lean D Tossup Lean D Lean D Likely DManchin
49.6% D
Wisconsin EVEN Tammy Baldwin 51.4% D Likely D Safe D Likely D Likely D Likely D Likely D Lean D Likely D Likely D Safe DBaldwin
55.4% D
Wyoming R+25 John Barrasso 75.7% R Safe R Safe R Safe R Safe R Likely R Safe R Safe R Safe R Safe R Safe RBarrasso
67.0% R
Overall [l] D - 43
R - 48
9 tossups
D - 48
R - 51
1 tossup
D - 48
R - 52
0 tossups
D - 43
R - 48
9 tossups
D - 45
R - 50
5 tossups
D - 45
R - 49
6 tossups
D - 43
R - 49
8 tossups
D - 44
R - 50
6 tossups
D - 45
R - 50
5 tossups
D - 48
R - 50
2 tossups
Results:
D - 47
R - 53

Election dates

These are the election dates for the regularly scheduled general elections.

StateFiling
deadline [26]
Primary
election [27]
Primary
run-off
(if necessary) [27]
General
election
Poll closing
(Eastern Time) [28]
Arizona May 30, 2018August 28, 2018N/ANovember 6, 20189pm
California March 9, 2018June 5, 2018N/ANovember 6, 201811pm
Connecticut June 12, 2018August 14, 2018N/ANovember 6, 20188pm
Delaware July 10, 2018September 6, 2018N/ANovember 6, 20188pm
Florida May 4, 2018August 28, 2018N/ANovember 6, 20187pm and 8pm
Hawaii June 5, 2018August 11, 2018N/ANovember 6, 201811pm
Indiana February 9, 2018May 8, 2018N/ANovember 6, 20186pm and 7pm
Maine March 15, 2018June 12, 2018N/ANovember 6, 20188pm
Maryland February 27, 2018June 26, 2018N/ANovember 6, 20188pm
Massachusetts June 5, 2018September 4, 2018N/ANovember 6, 20188pm
Michigan April 24, 2018August 7, 2018N/ANovember 6, 20188pm and 9pm
Minnesota June 5, 2018August 14, 2018N/ANovember 6, 20189pm
Mississippi March 1, 2018June 5, 2018June 26, 2018November 6, 20188pm
Mississippi (special) March 26, 2018November 6, 2018N/ANovember 27, 2018 [m] 8pm
Missouri March 27, 2018August 7, 2018N/ANovember 6, 20188pm
Montana March 12, 2018June 5, 2018N/ANovember 6, 201810pm
Nebraska March 1, 2018May 15, 2018N/ANovember 6, 20189pm
Nevada March 16, 2018June 12, 2018N/ANovember 6, 201810pm
New Jersey April 2, 2018June 5, 2018N/ANovember 6, 20188pm
New Mexico March 13, 2018June 5, 2018N/ANovember 6, 20189pm
New York April 12, 2018June 26, 2018N/ANovember 6, 20189pm
North Dakota April 9, 2018June 12, 2018N/ANovember 6, 20188pm and 9pm
Ohio February 7, 2018May 8, 2018N/ANovember 6, 20187:30pm
Pennsylvania March 20, 2018May 15, 2018N/ANovember 6, 20188pm
Rhode Island June 27, 2018September 12, 2018N/ANovember 6, 20188pm
Tennessee April 5, 2018August 2, 2018N/ANovember 6, 20188pm
Texas December 11, 2017March 6, 2018May 22, 2018
(unnecessary)
November 6, 20188pm and 9pm
Utah March 15, 2018June 26, 2018N/ANovember 6, 201810pm
Vermont May 31, 2018August 14, 2018N/ANovember 6, 20187pm
Virginia March 29, 2018June 12, 2018N/ANovember 6, 20187pm
Washington May 18, 2018August 7, 2018N/ANovember 6, 201811pm
West Virginia January 27, 2018May 8, 2018N/ANovember 6, 20187:30pm
Wisconsin June 1, 2018August 14, 2018N/ANovember 6, 20189pm
Wyoming June 1, 2018August 21, 2018N/ANovember 6, 20189pm

Gains and losses

Retirements

Map of retirements:

.mw-parser-output .legend{page-break-inside:avoid;break-inside:avoid-column}.mw-parser-output .legend-color{display:inline-block;min-width:1.25em;height:1.25em;line-height:1.25;margin:1px 0;text-align:center;border:1px solid black;background-color:transparent;color:black}.mw-parser-output .legend-text{}
Republican incumbent
Democratic incumbent
Independent incumbent
Republican incumbent retired 2018 United States Senate elections retirements map.svg
Map of retirements:
  Republican incumbent
  Democratic incumbent
  Independent incumbent
  Republican incumbent retired

Three Republicans retired instead of seeking re-election.

StateSenatorReplaced by
Arizona Jeff Flake Kyrsten Sinema
Tennessee Bob Corker Marsha Blackburn
Utah Orrin Hatch Mitt Romney

Defeats

Four Democrats and one Republican sought re-election but lost in the general election.

StateSenatorReplaced by
Florida Bill Nelson Rick Scott
Indiana Joe Donnelly Mike Braun
Missouri Claire McCaskill Josh Hawley
Nevada Dean Heller Jacky Rosen
North Dakota Heidi Heitkamp Kevin Cramer

Post-election changes

One Republican resigned before the start of the 116th Congress on December 31, 2018, and another Republican resigned during the 116th Congress for health reasons. Initially, all were replaced by Republican appointees.

StateSenatorReplaced by
Arizona
(Class 3)
Jon Kyl Martha McSally
Georgia
(Class 3)
Johnny Isakson Kelly Loeffler

Race summary

Special elections during the preceding Congress

In these special elections, the winners will be seated before January 3, 2019, when elected and qualified. They are ordered by election date, then by state and by class.

StateIncumbentResultCandidates
SenatorPartyElectoral
history
Minnesota
(Class 2)
Tina Smith DFL2018 (appointed)Interim appointee elected.
Mississippi
(Class 2)
Cindy Hyde-Smith Republican2018 (appointed)Interim appointee elected.

Elections leading to the next Congress

In these general elections, the winners were elected for the term beginning January 3, 2019.

All of the elections involve the Class 1 seats and they are ordered by state.

StateIncumbentResultCandidates
SenatorPartyElectoral
history
Arizona Jeff Flake Republican 2012 Incumbent retired.
Democratic gain.
California Dianne Feinstein Democratic 1992 (special)
1994
2000
2006
2012
Incumbent re-elected.
Connecticut Chris Murphy Democratic 2012 Incumbent re-elected.
  • Green check.svgY Chris Murphy (Democratic) 59.5%
  • Matthew Corey (Republican) 39.4%
Others
  • Richard Lion (Libertarian) 0.6%
  • Jeff Russell (Green) 0.5%
Delaware Tom Carper Democratic 2000
2006
2012
Incumbent re-elected.
  • Green check.svgY Tom Carper (Democratic) 60.0%
  • Robert Arlett (Republican) 37.8%
Others
  • Demitri Theodoropoulos (Green) 1.2%
  • Nadine Frost (Libertarian) 1.1%
Florida Bill Nelson Democratic 2000
2006
2012
Incumbent lost re-election.
Republican gain.
Winner delayed term until January 8, 2019, to finish his term as Governor of Florida.
Hawaii Mazie Hirono Democratic 2012 Incumbent re-elected.
  • Green check.svgY Mazie Hirono (Democratic) 71.2%
  • Ron Curtis (Republican) 28.8%
Indiana Joe Donnelly Democratic 2012 Incumbent lost re-election.
Republican gain.
Maine Angus King Independent 2012 Incumbent re-elected.
  • Green check.svgY Angus King (Independent) 54.3%
  • Eric Brakey (Republican) 35.2%
  • Zak Ringelstein (Democratic) 10.4%
Maryland Ben Cardin Democratic 2006
2012
Incumbent re-elected.
Massachusetts Elizabeth Warren Democratic 2012 Incumbent re-elected.
Michigan Debbie Stabenow Democratic 2000
2006
2012
Incumbent re-elected.
Others
  • Marcia Squier (Independent) 1.0%
  • George Huffman III (Constitution) 0.6%
  • John Wilhelm (Natural Law) 0.4%
Minnesota Amy Klobuchar DFL 2006
2012
Incumbent re-elected.
  • Green check.svgY Amy Klobuchar (DFL) 60.3%
  • Jim Newberger (Republican) 36.2%
  • Dennis Schuller (Legal Marijuana Now) 2.5%
  • Paula M. Overby (Green) 0.9%
Mississippi Roger Wicker Republican2007 (appointed)
2008 (special)
2012
Incumbent re-elected.
Others
  • Danny Bedwell (Libertarian) 1.4%
  • Shawn O'Hara (Reform) 0.6%
Missouri Claire McCaskill Democratic 2006
2012
Incumbent lost re-election.
Republican gain.
Others
  • Craig O'Dear (Independent) 1.4%
  • Japheth Campbell (Libertarian) 1.1%
  • Jo Crain (Green) 0.5%
Montana Jon Tester Democratic 2006
2012
Incumbent re-elected.
Nebraska Deb Fischer Republican 2012 Incumbent re-elected.
Nevada Dean Heller Republican2011 (appointed)
2012
Incumbent lost re-election.
Democratic gain.
Others
  • Barry Michaels (Independent) 1.0%
  • Tim Hagan (Libertarian) 0.9%
  • Kamau Bakari (Independent American) 0.7%
New Jersey Bob Menendez Democratic2006 (appointed)
2006
2012
Incumbent re-elected.
Others
  • Madelyn Hoffman (Green) 0.8%
  • Murray Sabrin (Libertarian) 0.7%
  • Natalie Rivera (For The People) 0.6%
  • Tricia Flanagan (New Day NJ) 0.5%
  • Kevin Kimple (Make It Simple) 0.3%
  • Hank Schroeder (Economic Growth) 0.3%
New Mexico Martin Heinrich Democratic 2012 Incumbent re-elected.
New York Kirsten Gillibrand Democratic2009 (appointed)
2010 (special)
2012
Incumbent re-elected.
North Dakota Heidi Heitkamp Democratic-NPL 2012 Incumbent lost re-election.
Republican gain.
Ohio Sherrod Brown Democratic 2006
2012
Incumbent re-elected.
Pennsylvania Bob Casey Jr. Democratic 2006
2012
Incumbent re-elected.
Others
  • Dale Kerns (Libertarian) 1.0%
  • Neal Gale (Green) 0.6%
Rhode Island Sheldon Whitehouse Democratic 2006
2012
Incumbent re-elected.
Tennessee Bob Corker Republican 2006
2012
Incumbent retired.
Republican hold.
Others
  • Trudy Austin (Independent) 0.4%
  • Dean Hill (Independent) 0.4%
  • Kris Todd (Independent) 0.2%
  • John Carico (Independent) 0.2%
  • Breton Phillips (Independent) 0.1%
  • Kevin McCants (Independent) 0.1%
Texas Ted Cruz Republican 2012 Incumbent re-elected.
Utah Orrin Hatch Republican 1976
1982
1988
1994
2000
2006
2012
Incumbent retired.
Republican hold.
  • Green check.svgY Mitt Romney (Republican) 62.6%
  • Jenny Wilson (Democratic) 30.9%
  • Tim Aalders (Constitution) 2.7%
  • Craig Bowden (Libertarian) 2.6%
  • Reed McCandless (Independent American) 1.2%
Vermont Bernie Sanders Independent 2006
2012
Incumbent re-elected.
  • Green check.svgY Bernie Sanders (Independent) 67.4%
  • Lawrence Zupan (Republican) 27.5%
Virginia Tim Kaine Democratic 2012 Incumbent re-elected.
Washington Maria Cantwell Democratic 2000
2006
2012
Incumbent re-elected.
West Virginia Joe Manchin Democratic 2010 (special)
2012
Incumbent re-elected.
Wisconsin Tammy Baldwin Democratic 2012 Incumbent re-elected.
Wyoming John Barrasso Republican2007 (appointed)
2008 (special)
2012
Incumbent re-elected.

Closest races

In twelve races the margin of victory was under 10%.

StateParty of winnerMargin
Florida Republican (flip)0.12%
Arizona Democratic (flip)2.34%
Texas Republican2.57%
West Virginia Democratic3.31%
Montana Democratic3.55%
Nevada Democratic (flip)5.03%
Missouri Republican (flip)5.81%
Indiana Republican (flip)5.89% [n]
Michigan Democratic6.51%
Ohio Democratic6.85%
Mississippi (special) Republican7.27%
California Democratic8.33% [o]

Arizona

Arizona election
Flag of Arizona.svg
  2012
2024  
Turnout64.85%
  Kyrsten Sinema (cropped).jpg Martha McSally official portrait (cropped 2).jpg
Nominee Kyrsten Sinema Martha McSally
Party Democratic Republican
Popular vote1,191,1001,135,200
Percentage49.96%47.61%

2018 United States Senate election in Arizona results map by county.svg
Sinema:     50–60%     60–70%
McSally:     50–60%     60–70%     70–80%

U.S. senator before election

Jeff Flake
Republican

Elected U.S. senator

Kyrsten Sinema
Democratic

One-term Republican Jeff Flake was elected with 49% of the vote in 2012. He chose not to run for re-election. [30]

U.S. Representative Martha McSally [31] won the Republican nomination in a three-way primary on August 28, 2018, against Joe Arpaio and Kelli Ward.

U.S. Representative Kyrsten Sinema [31] easily secured the Democratic nomination.

Sinema defeated McSally by a slim margin; her victory became official only after six days of counting ballots.

Arizona Republican primary
PartyCandidateVotes%
Republican Martha McSally 357,626 54.57
Republican Kelli Ward 180,92627.61
Republican Joe Arpaio 116,55517.79
Write-in 1910.03
Total votes655,298 100.00
Arizona Democratic primary
PartyCandidateVotes%
Democratic Kyrsten Sinema 404,170 79.25
Democratic Deedra Abboud105,80020.75
Total votes509,970 100.00
Arizona general election [32]
PartyCandidateVotes%±%
Democratic Kyrsten Sinema 1,191,100 49.96% +3.76
Republican Martha McSally 1,135,20047.61%–1.62
Green Angela Green57,4422.41%N/A
Write-in 5660.02%+0.01
Total votes2,384,308 100.00%
Democratic gain from Republican

California

California election
Flag of California.svg
  2012
2024  
Turnout56.42%
  Dianne Feinstein, official Senate photo 2.jpg KDL-Portrait.jpg
Nominee Dianne Feinstein Kevin de León
Party Democratic Democratic
Popular vote6,019,4225,093,942
Percentage54.16%45.84%

2018 United States Senate election in California results map by county.svg
County results
Feinstein:     50–60%     60–70%
de León:     50–60%     60–70%     70–80%

U.S. senator before election

Dianne Feinstein
Democratic

Elected U.S. senator

Dianne Feinstein
Democratic

Four-term Democrat Dianne Feinstein won a special election in 1992 and was elected to full terms in 1994, 2000, 2006, and 2012. She ran for re-election and advanced to the general election after securing the top spot in the June 5 jungle primary. [33]

The June 5 primary ballot listed 32 candidates (Feinstein plus 31 challengers) in addition to 3 write-in candidates. There were 10 Democratic candidates, 11 Republican candidates, one Libertarian, one Peace and Freedom candidate, and 9 independent candidates. There was also a Green Party candidate who ran as a write-in.

President pro tempore of the California State Senate Kevin de León advanced to the general election for the right to challenge Feinstein after securing the second spot in the primary. [33]

The 11 Republican candidates who ran in the primary combined for 33.2% of the vote. The top Republican candidate, James P. Bradley, received 8.3% of the vote, which put him in 3rd place at 3.8% behind the second-place finisher, Kevin DeLeon. [34]

On November 6, Dianne Feinstein was elected to a fifth term, defeating Kevin de León.

California blanket primary
PartyCandidateVotes%
Democratic Dianne Feinstein (incumbent) 2,947,035 44.18
Democratic Kevin de León 805,446 12.07
Republican James P. Bradley 556,2528.34
Republican Arun K. Bhumitra350,8155.26
Republican Paul A. Taylor323,5344.85
Republican Erin Cruz267,4944.01
Republican Tom Palzer205,1833.08
Democratic Alison Hartson147,0612.20
Republican Rocky De La Fuente 135,2792.03
Democratic Pat Harris126,9471.90
Republican John "Jack" Crew93,8081.41
Republican Patrick Little89,8671.35
Republican Kevin Mottus87,6461.31
Republican Jerry Joseph Laws67,1401.01
Libertarian Derrick Michael Reid60,0000.90
Democratic Adrienne Nicole Edwards56,1720.84
Democratic Douglas Howard Pierce42,6710.64
Republican Mario Nabliba39,2090.59
Democratic David Hildebrand30,3050.45
Democratic Donnie O. Turner30,1010.45
Democratic Herbert G. Peters27,4680.41
No party preference David Moore24,6140.37
No party preference Ling Ling Shi23,5060.35
Peace and Freedom John Parker22,8250.34
No party preference Lee Olson20,3930.31
Democratic Gerald Plummer18,2340.27
No party preference Jason M. Hanania18,1710.27
No party preference Don J. Grundmann15,1250.23
No party preference Colleen Shea Fernald13,5360.20
No party preference Rash Bihari Ghosh12,5570.19
No party preference Tim Gildersleeve8,4820.13
No party preference Michael Fahmy Girgis2,9860.04
Write-in 8630.01
Total votes6,670,720 100.00
California general election [32]
PartyCandidateVotes%±%
Democratic Dianne Feinstein (incumbent) 6,019,422 54.16% –8.36
Democratic Kevin de León 5,093,94245.84%N/A
Total votes11,113,364 100.00%
Democratic hold

Connecticut

Connecticut election
Flag of Connecticut.svg
  2012
2024  
Turnout63.58%
  Chris Murphy, official portrait, 113th Congress (cropped).jpg 3x4.svg
Nominee Chris Murphy Matthew Corey
Party Democratic Republican
Popular vote825,579545,717
Percentage59.53%39.35%

2018 United States Senate election in Connecticut results map by county.svg
2018 United States Senate election in Connecticut results map by municipality.svg
Murphy:      40–50%     50–60%     60–70%     70–80%     80–90%     >90%
Corey:      40–50%     50–60%     60–70%

U.S. senator before election

Chris Murphy
Democratic

Elected U.S. senator

Chris Murphy
Democratic

One-term Democrat Chris Murphy was elected with 55% of the vote in 2012. He ran for re-election. [35]

Businessmen Matthew Corey [36] received the Republican nomination.

Chris Murphy was elected to a second term, winning nearly 60% of the vote. [37]

Connecticut Republican primary
PartyCandidateVotes%
Republican Matthew Corey 99,899 76.54
Republican Dominic Rapini30,62423.46
Total votes130,523 100.00
Connecticut general election [32]
PartyCandidateVotes%±%
Democratic Chris Murphy (incumbent) 825,579 59.53% +4.71
Republican Matthew Corey545,71739.35%–3.72
Libertarian Richard Lion8,8380.64%–1.02
Green Jeff Russell6,6180.48%N/A
Write-in 880.01%–0.44
Total votes1,386,840 100.00%
Democratic hold

Delaware

Delaware election
Flag of Delaware.svg
  2012
2024  
Turnout52.18%
  Tom Carper, official portrait, 112th Congress (cropped).jpg 3x4.svg
Nominee Tom Carper Rob Arlett
Party Democratic Republican
Popular vote217,385137,127
Percentage59.95%37.81%

Delaware state election results.svg
Carper:     50–60%     60–70%
Arlett:     50–60%

U.S. senator before election

Tom Carper
Democratic

Elected U.S. senator

Tom Carper
Democratic

Three-term Democrat Tom Carper won re-election with 66% of the vote in 2012. He announced he was running for re-election during an interview on MSNBC on July 24, 2017. [38] He defeated Dover community activist Kerri Evelyn Harris for the Democratic nomination. Sussex County Councilman Robert Arlett won the Republican nomination. [38]

Tom Carper defeated Arlett, winning 60% of the vote. [39]

Delaware Democratic primary
PartyCandidateVotes%
Democratic Tom Carper (incumbent) 53,635 64.59
Democratic Kerri Evelyn Harris29,40735.41
Total votes83,042 100.00
Delaware Republican primary
PartyCandidateVotes%
Republican Rob Arlett 25,284 66.77
Republican Gene Truono10,58727.96
Republican Rocky De La Fuente 1,9985.28
Total votes37,870 100.00
Delaware general election [32]
PartyCandidateVotes%±%
Democratic Tom Carper (incumbent) 217,385 59.95% –6.47
Republican Rob Arlett137,12737.82%+8.87
Green Demitri Theodoropoulos4,1701.15%+0.35
Libertarian Nadine Frost3,9101.08%N/A
Write-in 140.00%N/A
Total votes362,606 100.00%
Democratic hold

Florida

Florida election
Flag of Florida.svg
  2012
2024  
Turnout61.68%
  Official Portrait of Senator Rick Scott (R-FL).jpg NASA Administrator Bill Nelson Official Portrait (NHQ202105170001).jpg
Nominee Rick Scott Bill Nelson
Party Republican Democratic
Popular vote4,099,5054,089,472
Percentage50.05%49.93%

2018 United States Senate election in Florida results map by county.svg
Scott:     50–60%     60–70%     70–80%     80–90%
Nelson:     50–60%     60–70%

U.S. senator before election

Bill Nelson
Democratic

Elected U.S. senator

Rick Scott
Republican

Three-term Democrat Bill Nelson was re-elected with 55% of the vote in 2012. He sought re-election to a fourth term in office. [40]

Florida Governor Rick Scott won the Republican nomination. First elected in 2010 and re-elected in 2014, Scott's term as Governor of Florida was set to end by January 2019, due to term limits. [40]

Edward Janowski was running as an independent, but did not qualify. [40]

Scott led among ballots tallied on election night, but given the close margins of the race recounts were ordered. [41] Final recount numbers were released following a machine and hand recount with Rick Scott maintaining a lead. [42] On November 18, Nelson conceded to Scott. [43] Two days later, election results were certified by the state, cementing Scott's win. [44]

Florida Republican primary
PartyCandidateVotes%
Republican Rick Scott 1,456,187 88.61
Republican Rocky De La Fuente 187,20911.39
Total votes1,643,396 100.00
Florida general election [32]
PartyCandidateVotes%±%
Republican Rick Scott 4,099,505 50.05% +7.82
Democratic Bill Nelson (incumbent)4,089,47249.93%–5.30
Write-in 1,0280.01%+0.01
Total votes8,190,005 100.00%
Republican gain from Democratic

Hawaii

Hawaii election
Flag of Hawaii.svg
  2012
2024  
Turnout51.32%
  Mazie Hirono, official portrait, 113th Congress (cropped).jpg 3x4.svg
Nominee Mazie Hirono Ron Curtis
Party Democratic Republican
Popular vote276,316112,035
Percentage71.15%28.85%

2018 United States Senate election in Hawaii results map by county.svg
County results
Hirono:     60–70%     70–80%

U.S. senator before election

Mazie Hirono
Democratic

Elected U.S. senator

Mazie Hirono
Democratic

One-term Democrat Mazie Hirono was elected with 63% of the vote in 2012. She ran. [45]

Ron Curtis was the Republican nominee.

Hirono was elected to a second term by a landslide.

Hawaii Democratic primary
PartyCandidateVotes%
Democratic Mazie Hirono (incumbent) 201,679 100.00
Total votes201,679 100.00
Hawaii Republican primary
PartyCandidateVotes%
Republican Ron Curtis 6,370 23.73
Republican Consuelo Anderson5,17219.26
Republican Robert C. Helsham Sr.3,98814.85
Republican Thomas E. White3,66113.64
Republican Rocky De La Fuente 3,06511.42
Republican George L. Berish1,6586.18
Republican Michael R. Hodgkiss1,5765.87
Republican Eddie Pirkowski1,3585.06
Total votes26,848 100.00
Hawaii general election [32]
PartyCandidateVotes%±%
Democratic Mazie Hirono (incumbent) 276,316 71.15% +8.55
Republican Ron Curtis112,03528.85%–8.55
Total votes388,351 100.00%
Democratic hold

Indiana

Indiana election
Flag of Indiana.svg
  2012
2024  
Turnout50.42%
  Mike Braun, Official Portrait, 116th Congress.jpg Joe Donnelly, official portrait, 113th Congress (cropped).jpg
Nominee Mike Braun Joe Donnelly
Party Republican Democratic
Popular vote1,158,0001,023,553
Percentage50.73%44.84%

2018 United States Senate election in Indiana results map by county.svg
County results
Braun:     40–50%     50–60%     60–70%     70–80%
Donnelly:     40–50%     50–60%     60–70%

U.S. senator before election

Joe Donnelly
Democratic

Elected U.S. senator

Mike Braun
Republican

One-term Democrat Joe Donnelly was elected with 50.04% of the vote in 2012. He ran. He won the Democratic primary unopposed. [46]

State Representative Mike Braun [46] won the May 8 Republican primary. U.S. Representatives Luke Messer [47] and Todd Rokita [47] also ran for the Republican nomination.

James Johnson ran as an independent. [46]

Braun won election with 51% of the vote, defeating Joe Donnelly. [48]

Indiana Democratic primary
PartyCandidateVotes%
Democratic Joe Donnelly (incumbent) 284,621 100.00
Total votes284,621 100.00
Indiana Republican primary
PartyCandidateVotes%
Republican Mike Braun 208,602 41.17
Republican Todd Rokita 151,96729.99
Republican Luke Messer 146,13128.84
Total votes506,700 100.00
Indiana general election [32]
PartyCandidateVotes%±%
Republican Mike Braun 1,158,000 50.73% +6.45
Democratic Joe Donnelly (incumbent)1,023,55344.84%–5.20
Libertarian Lucy Brenton100,9424.42%–1.26
Write-in 700.00%N/A
Total votes2,282,565 100.00%
Republican gain from Democratic

Maine

Maine election
Flag of Maine.svg
  2012
2024  
Turnout59.96%
  Angus King, official portrait, 113th Congress.jpg Eric Brakey by Gage Skidmore.jpg Zak Ringelstein in Biddeford, Maine (cropped).jpg
Nominee Angus King Eric Brakey Zak Ringelstein
Party Independent Republican Democratic
Popular vote344,575223,50266,268
Percentage54.31%35.23%10.45%

2018 United States Senate election in Maine results map by county.svg
2018 United States Senate election in Maine results map by municipality.svg
King:     40–50%     50–60%     60–70%     70–80%     80–90%     >90%
Brakey:     40–50%     50–60%     60–70%     70–80%     80–90%     >90%
Tie:     

U.S. senator before election

Angus King
Independent

Elected U.S. senator

Angus King
Independent

One-term Independent Senator Angus King was elected in a three-way race with 53% of the vote in 2012. King has caucused with the Democratic Party since taking office in 2013, but he has left open the possibility of caucusing with the Republican Party in the future. [49]

State Senator Eric Brakey ran unopposed for the Republican nomination. [50]

Public school teacher and founder of UClass Zak Ringelstein ran unopposed for the Democratic nomination. [50]

The election was conducted with ranked choice voting, as opposed to "First-past-the-post voting", after Maine voters passed a citizen referendum approving the change in 2016 [51] and a June 2018 referendum sustaining the change. [52]

King was easily re-elected with over 50% of the vote.

Maine Democratic primary
PartyCandidateVotes%
Democratic Zak Ringelstein 89,841 100.00
Total votes89,841 100.00
Maine Republican primary
PartyCandidateVotes%
Republican Eric Brakey 59,853 100.00
Total votes59,853 100.00
Maine general election [32]
PartyCandidateVotes%±%
Independent Angus King (incumbent) 344,575 54.31% +1.42
Republican Eric Brakey 223,50235.23%+4.48
Democratic Zak Ringelstein66,26810.45%–2.81
Write-in 640.01%N/A
Total votes634,409 100.00%
Independent hold

Maryland

Maryland election
Flag of Maryland.svg
  2012
2024  
Turnout58.17%
  Ben Cardin official Senate portrait.jpg Tony Campbell.jpg
Nominee Ben Cardin Tony Campbell
Party Democratic Republican
Popular vote1,491,614697,107
Percentage64.86%30.31%

2018 United States Senate election in Maryland results map by county.svg
Cardin:     40–50%     50–60%     60–70%     70–80%     80–90%     >90%
Campbell:     50–60%     70–80%

U.S. senator before election

Ben Cardin
Democratic

Elected U.S. senator

Ben Cardin
Democratic

Two-term Democrat Ben Cardin was re-elected with 56% of the vote in 2012. He won the Democratic primary. [53]

Tony Campbell, Evan Cronhardt, Nnabu Eze, Gerald Smith, and Blaine Taylor [54] were seeking the Republican nomination, with Campbell winning.

Arvin Vohra, vice chairman of the Libertarian National Committee, sought the Libertarian Party nomination. [54]

Independents Neal Simon [54] and Edward Shlikas[ citation needed ], and Michael B Puskar ran.

Cardin won re-election to a third term in office. [55]

Maryland Democratic primary
PartyCandidateVotes%
Democratic Ben Cardin (incumbent) 477,441 80.28
Democratic Chelsea Manning 34,6115.82
Democratic Jerome Segal 20,0273.37
Democratic Debbie Wilson18,9533.19
Democratic Marcia H. Morgan16,0472.70
Democratic Lih Young9,8741.66
Democratic Richard Vaughn9,4801.59
Democratic Erik Jetmir8,2591.39
Total votes594,692 100.00
Maryland Republican primary
PartyCandidateVotes%
Republican Tony Campbell 51,426 29.22
Republican Chris Chaffee42,32824.05
Republican Christina J. Grigorian30,75617.48
Republican John Graziani15,4358.77
Republican Blaine Taylor8,8485.03
Republican Gerald I. Smith Jr.7,5644.30
Republican Brian Charles Vaeth5,4113.07
Republican Evan M. Cronhardt4,4452.53
Republican Bill Krehnbrink3,6062.05
Republican Nnabu Eze3,4421.96
Republican Albert Binyahmin Howard2,7201.55
Total votes175,981 100.00
Maryland general election [32]
PartyCandidateVotes%±%
Democratic Ben Cardin (incumbent) 1,491,614 64.86% +8.88
Republican Tony Campbell 697,01730.31%+3.98
Independent Neal Simon 85,9643.74%N/A
Libertarian Arvin Vohra22,9431.00%–0.22
Write-in 2,3510.10%±0.00
Total votes2,299,889 100.00%
Democratic hold

Massachusetts

Massachusetts election
Flag of Massachusetts.svg
  2012
2024  
Turnout59.17%
  Elizabeth Warren--2016 Official Portrait--(cropped).jpg Massachusetts State Rep. Geoff Diehl (cropped).jpg
Nominee Elizabeth Warren Geoff Diehl
Party Democratic Republican
Popular vote1,633,371979,210
Percentage60.34%36.17%

2018 MA US Senate.svg
2018 United States Senate Election in Massachusetts by Municipality.svg
Warren:     40–50%     50–60%     60–70%     70–80%     80–90%     >90%
Diehl:     40–50%     50–60%     60–70%

U.S. senator before election

Elizabeth Warren
Democratic

Elected U.S. senator

Elizabeth Warren
Democratic

One-term Democrat Elizabeth Warren was elected with 54% of the vote in 2012. She ran for re-election. [56]

State Representative Geoff Diehl, [57] attorney and founder of Better for America, John Kingston [57] and former Romney aide Beth Lindstrom, [57] ran for the Republican nomination. Diehl won the Republican nomination.

Shiva Ayyadurai [58] ran as an independent. Shiva started as in early 2017 as the first Republican in the race, but went independent in November 2017.

Warren defeated Diehl, winning a second term. [59]

Massachusetts Democratic primary
PartyCandidateVotes%
Democratic Elizabeth Warren (incumbent) 590,835 98.08
Write-in 11,5581.92
Total votes602,393 100.00
Massachusetts Republican primary
PartyCandidateVotes%
Republican Geoff Diehl 144,043 55.15
Republican John Kingston III 69,63626.66
Republican Beth Joyce Lindstrom46,69317.88
Write-in 7980.31
Total votes261,170 100.00
Massachusetts general election [32]
PartyCandidateVotes%±%
Democratic Elizabeth Warren (incumbent) 1,633,371 60.34% +6.60
Republican Geoff Diehl 979,21036.17%–10.02
Independent Shiva Ayyadurai 91,7103.39%N/A
Write-in 2,7990.10%+0.03
Total votes2,707,090 100.00%
Democratic hold

Michigan

Michigan election
Flag of Michigan.svg
  2012
2024  
Turnout56.72%
  Debbie Stabenow, official photo, 116th Congress (cropped).jpg Donald Trump, with John Edward James, Oval Office (September 2018) (cropped).jpg
Nominee Debbie Stabenow John James
Party Democratic Republican
Popular vote2,214,4781,938,818
Percentage52.26%45.76%

2018 United States Senate election in Michigan results map by county.svg
Stabenow:     40-50%     50–60%     60–70%     70–80%
James:     40–50%     50–60%     60–70%     70–80%

U.S. senator before election

Debbie Stabenow
Democratic

Elected U.S. senator

Debbie Stabenow
Democratic

Three-term Democrat Debbie Stabenow was re-elected with 59% of the vote in 2012. [60] She was renominated without Democratic opposition. On the Republican side, businessman John James won the nomination. [60]

In the final months of the election, polls showed the race was beginning to narrow. Ultimately, Stabenow was re-elected, defeating James, with a majority of the vote.

Michigan Democratic primary
PartyCandidateVotes%
Democratic Debbie Stabenow (incumbent) 1,045,450 100.00
Total votes1,045,450 100.00
Michigan Republican primary
PartyCandidateVotes%
Republican John James 518,564 54.67
Republican Sandy Pensler429,88545.32
Write-in 570.01
Total votes948,506 100.00
Michigan general election [32]
PartyCandidateVotes%±%
Democratic Debbie Stabenow (incumbent) 2,214,478 52.26% –6.54
Republican John James 1,938,81845.76%+7.78
Green Marcia Squier40,2040.95%+0.35
Constitution George Huffman III27,2510.64%+0.08
Natural Law John Howard Wilhelm16,5020.39%+0.15
Write-in 180.00%±0.00
Total votes4,237,271 100.00%
Democratic hold

Minnesota

Minnesota (regular)

Minnesota general election
Flag of Minnesota (1983-2024).svg
  2012
2024  
Turnout63.89%
  Amy Klobuchar, official portrait, 113th Congress (cropped 2).jpg JimNewberger (cropped).jpg
Nominee Amy Klobuchar Jim Newberger
Party Democratic (DFL) Republican
Popular vote1,566,174940,437
Percentage60.31%36.21%

2018 United States Senate election in Minnesota results map by county.svg
Klobuchar:     40–50%     50–60%     60–70%     70–80%
Newberger:     40–50%     50–60%     60–70%

U.S. senator before election

Amy Klobuchar
Democratic (DFL)

Elected U.S. senator

Amy Klobuchar
Democratic (DFL)

Two-term Democrat Amy Klobuchar was re-elected with 65% of the vote in 2012. She ran for re-election. [61]

State Representative Jim Newberger [61] ran for the Republican nomination.

Klobuchar was easily re-elected. [62]

Minnesota Democratic (DFL) primary
PartyCandidateVotes%
Democratic (DFL) Amy Klobuchar (incumbent) 557,306 95.70
Democratic (DFL) Steve Carlson9,9341.71
Democratic (DFL) Stephen A. Emery7,0471.21
Democratic (DFL) David Robert Groves4,5110.77
Democratic (DFL) Leonard J. Richards3,5520.61
Total votes582,350 100.00
Minnesota Republican primary
PartyCandidateVotes%
Republican Jim Newberger 201,531 69.50
Republican Merrill Anderson45,49215.69
Republican Rae Hart Anderon25,8838.93
Republican Rocky De La Fuente 17,0515.88
Total votes289,957 100.00
Minnesota general election [32]
PartyCandidateVotes%±%
Democratic (DFL) Amy Klobuchar (incumbent) 1,566,174 60.31% –4.92
Republican Jim Newberger 940,43736.21%+5.68
Legal Marijuana Now Dennis Schuller66,2362.55%N/A
Green Paula M. Overby23,1010.89%N/A
Write-in 9310.04%–0.05
Total votes2,596,879 100.00%
Democratic (DFL) hold

Minnesota (special)

Minnesota special election
Flag of Minnesota (1983-2024).svg
  2014
2020  
Turnout63.66%
  Tina Smith official photo (cropped).jpg Minnesota State Senator Karin Housley.jpg
Nominee Tina Smith Karin Housley
Party Democratic (DFL) Republican
Popular vote1,370,5401,095,777
Percentage52.97%42.35%

2018 United States Senate special election in Minnesota results map by county.svg
Smith:     40–50%     50–60%     60–70%
Housley:     40–50%     50–60%     60–70%

U.S. senator before election

Tina Smith
Democratic (DFL)

Elected U.S. senator

Tina Smith
Democratic (DFL)

Two-term Democrat Al Franken announced that he would resign in December 2017, following allegations of sexual harassment. Mark Dayton, Governor of Minnesota, appointed Lt. Gov. Tina Smith on January 2, 2018, as an interim Senator until the November 2018 election. She defeated primary challenger Richard Painter in the Democratic primary held on August 14.

Incumbent Tina Smith defeated Republican Karin Housley in the general election to finish the term ending January 3, 2021.

Minnesota Democratic (DFL) primary
PartyCandidateVotes%
Democratic (DFL) Tina Smith (incumbent) 433,705 76.06
Democratic (DFL) Richard Painter 78,19313.71
Democratic (DFL) Ali Chehem Ali18,8973.31
Democratic (DFL) Gregg A. Iverson17,8253.13
Democratic (DFL) Nick Leonard16,5292.90
Democratic (DFL) Christopher Lovell Seymore Sr.5,0410.88
Total votes570,190 100.00
Minnesota Republican primary
PartyCandidateVotes%
Republican Karin Housley 186,384 61.95
Republican Bob Anderson107,10235.60
Republican Nikolay Nikolayevich Bey7,3752.45
Total votes300,861 100.00
Minnesota special election [32]
PartyCandidateVotes%±%
Democratic (DFL) Tina Smith (incumbent) 1,370,540 52.97% –0.18
Republican Karin Housley 1,095,77742.35%–0.56
Legal Marijuana Now Sarah Wellington95,6143.70%N/A
Independent Jerry Trooien24,3240.94%N/A
Write-in 1,1010.04%±0.00
Total votes2,587,356 100.00%
Democratic (DFL) hold

Mississippi

Mississippi (regular)

Mississippi general election
Flag of Mississippi (2001-2020).svg
  2012
2024  
Turnout49.66%
  Roger F. Wicker crop.jpg David Baria (cropped).jpg
Nominee Roger Wicker David Baria
Party Republican Democratic
Popular vote547,619369,567
Percentage58.49%39.47%

2018 United States Senate election in Mississippi results map by county.svg
Wicker:     40-50%     50–60%     60–70%     70–80%     80–90%
Baria:     40-50%     50–60%     60–70%     70–80%

U.S. senator before election

Roger Wicker
Republican

Elected U.S. senator

Roger Wicker
Republican

One-term Republican Roger Wicker won re-election with 57% of the vote in 2012. He was appointed in 2007 and won a special election in 2008 to serve the remainder of Trent Lott's term. [29]

David Baria [29] won the Democratic nomination in a run-off on June 26.

Wicker was easily re-elected. [63]

Mississippi Republican primary
PartyCandidateVotes%
Republican Roger Wicker (incumbent) 130,118 82.79
Republican Richard Boyanton27,05217.21
Total votes157,170 100.00
Mississippi Democratic primary
PartyCandidateVotes%
Democratic Howard Sherman 27,957 31.79
Democratic David Baria 27,244 30.98
Democratic Omeria Scott 21,27824.20
Democratic Victor G. Maurice Jr.4,3614.96
Democratic Jerome Garland4,2664.85
Democratic Jensen Bohren2,8253.21
Total votes87,931 100.00
Mississippi Democratic primary runoff
PartyCandidateVotes%
Democratic David Baria 44,156 58.64
Democratic Howard Sherman31,14941.36
Total votes75,305 100.00
Mississippi general election [32]
PartyCandidateVotes%±%
Republican Roger Wicker (incumbent) 547,619 58.49% +1.33
Democratic David Baria 369,56739.47%–1.08
Libertarian Danny Bedwell12,9811.39%N/A
Reform Shawn O'Hara6,0480.65%–0.58
Total votes936,215 100.00%
Republican hold

Mississippi (special)

2018 United States Senate special election in Mississippi
Flag of Mississippi (2001-2020).svg
  2014 November 6, 2018 (first round)
November 27, 2018 (runoff)
2020  
Turnout48.14%
  Cindy Hyde-Smith official photo.jpg Mike Espy 20120223-OCE-RBN-1281 (cropped 2).jpg Chris McDaniel.png
Candidate Cindy Hyde-Smith Mike Espy Chris McDaniel
Party Republican Democratic Republican
First round389,995
41.2%
386,742
40.9%
154,878
16.4%
Runoff 486,769
53.6%
420,819
46.4%
Eliminated

2018 United States Senate special election in Mississippi results map by county.svg
2018 United States Senate special runoff election in Mississippi results map by county.svg
County results
Hyde-Smith:     30–40%     40–50%     50–60%     60–70%     70–80%     80–90%
Espy:     30–40%     40–50%     50–60%     60–70%     70–80%     80–90%
McDaniel:     30–40%     40–50%

U.S. senator before election

Cindy Hyde-Smith
Republican

Elected U.S. Senator

Cindy Hyde-Smith
Republican

Seven-term Republican Thad Cochran, who won re-election with 59.9% of the vote in 2014, announced that he would resign since April 1, 2018 for health reasons. [64] Phil Bryant, Governor of Mississippi, announced on March 21, 2018, that he would appoint Mississippi Agriculture Commissioner Cindy Hyde-Smith to fill the vacancy. [65] She ran in the special election. [29]

On November 6, a nonpartisan jungle primary took place on the same day as the regularly scheduled U.S. Senate election for the seat currently held by Roger Wicker. Party affiliations were not printed on the ballot. [66] As no candidate gained 50% of the votes, a runoff special election between the top two candidates - Hyde-Smith and former United States Secretary of Agriculture Mike Espy [29] - was held on November 27, 2018. Hyde-Smith won the runoff election.

Democrat Tobey Bartee [67] and Republican Chris McDaniel also contested the first round of the election. [29]

Mississippi special election
PartyCandidateVotes%
Nonpartisan Cindy Hyde-Smith (incumbent) 389,995 41.25
Nonpartisan Mike Espy 386,742 40.90
Nonpartisan Chris McDaniel 154,87816.38
Nonpartisan Tobey Bernard Bartee13,8521.47
Total votes945,467 100.00
Mississippi special election runoff [32]
PartyCandidateVotes%±%
Nonpartisan Cindy Hyde-Smith (incumbent) 486,769 53.63% –6.27
Nonpartisan Mike Espy 420,81946.37%+8.48
Total votes907,588 100.00%
Republican hold

Missouri

Missouri election
Flag of Missouri.svg
  2012
2024  
Turnout58.23%
  Josh Hawley, official portrait, 116th congress.jpg Claire McCaskill, 113th official photo (cropped 2).jpg
Nominee Josh Hawley Claire McCaskill
Party Republican Democratic
Popular vote1,254,9271,112,935
Percentage51.38%45.57%

2018 United States Senate election in Missouri results map by county.svg
Hawley:     40–50%     50–60%     60–70%     70–80%     80–90%
McCaskill:     40–50%     50–60%     60–70%     80–90%

U.S. senator before election

Claire McCaskill
Democratic

Elected U.S. senator

Josh Hawley
Republican

Two-term Democrat Claire McCaskill was re-elected with 55% of the vote in 2012. She was renominated. [68]

Attorney General Josh Hawley [68] won the Republican nomination. [69] Japheth Campbell declared his candidacy for the Libertarian nomination. [68]

Polls showed a close race for months leading up to the election. Hawley defeated McCaskill in the general election. [70]

Missouri Democratic primary
PartyCandidateVotes%
Democratic Claire McCaskill (incumbent) 501,872 82.60
Democratic Carla Wright41,1266.77
Democratic David Faust15,9842.63
Democratic John Hogan15,9582.63
Democratic Angelica Earl15,5002.55
Democratic Travis Gonzalez9,4801.56
Democratic Leonard Joseph Steinman II7,6571.26
Total votes607,577 100.00
Missouri Republican primary
PartyCandidateVotes%
Republican Josh Hawley 389,978 58.64
Republican Tony Monetti64,8349.75
Republican Austin Petersen 54,9168.26
Republican Kristi Nichols49,6407.47
Republican Christina Smith35,0245.27
Republican Ken Patterson19,5792.94
Republican Peter Pfeifer16,5942.50
Republican Courtland Sykes13,8702.09
Republican Fred Ryman8,7811.32
Republican Brian G. Hagg6,8711.03
Republican Bradley Krembs4,9020.74
Total votes664,889 100.00
Missouri general election [32]
PartyCandidateVotes%±%
Republican Josh Hawley 1,254,927 51.38% +12.27
Democratic Claire McCaskill (incumbent)1,112,93545.57%–9.24
Independent Craig O'Dear34,3981.41%N/A
Libertarian Japheth Campbell27,3161.12%–4.95
Green Jo Crain12,7060.52%N/A
Write-in 70.00%–0.01
Total votes2,442,289 100.00%
Republican gain from Democratic

Montana

Montana election
Flag of Montana.svg
  2012
2024  
Turnout70.86%
  JonTester (cropped).jpg Matt Rosendale 117th U.S Congress.jpg
Nominee Jon Tester Matt Rosendale
Party Democratic Republican
Popular vote253,876235,963
Percentage50.33%46.78%

2018 United States Senate election in Montana results map by county.svg
Tester:     50–60%     60–70%     70–80%
Rosendale:     40–50%     50–60%     60–70%     70–80%     80–90%

U.S. senator before election

Jon Tester
Democratic

Elected U.S. senator

Jon Tester
Democratic

Two-term Democrat Jon Tester was re-elected with 49% of the vote in 2012. He won the Democratic nomination in the June 5 primary with no opposition. [71]

State Auditor Matthew Rosendale [71] won the Republican nomination in the June 5 primary. State Senator Albert Olszewski, [71] former judge Russell Fagg, [71] and Troy Downing [71] also ran for the Republican nomination.

Tester was re-elected winning over 50% of the vote. [72]

Montana Democratic primary
PartyCandidateVotes%
Democratic Jon Tester (incumbent) 114,948 100.00
Write-in 50.00
Total votes114,953 100.00
Montana Republican primary
PartyCandidateVotes%
Republican Matt Rosendale 51,859 33.82
Republican Russell Fagg 43,46528.34
Republican Troy Downing 29,34119.13
Republican Albert Olszewski 28,68118.70
Write-in 90.01
Total votes153,355 100.00
Montana general election [32]
PartyCandidateVotes%±%
Democratic Jon Tester (incumbent) 253,876 50.33% +1.75
Republican Matt Rosendale 235,96346.78%+1.92
Libertarian Rick Breckenridge14,5452.88%–3.68
Total votes504,384 100.00%
Democratic hold

Nebraska

Nebraska election
Flag of Nebraska.svg
  2012
2024  
Turnout57.32%
  Deb Fischer, official portrait, 115th Congress (cropped).jpg 3x4.svg
Nominee Deb Fischer Jane Raybould
Party Republican Democratic
Popular vote403,151269,917
Percentage57.69%38.62%

2018 United States Senate election in Nebraska results map by county.svg
Fischer:     50–60%     60–70%     70–80%     80–90%     >90%
Raybould:     40–50%     50–60%

U.S. senator before election

Deb Fischer
Republican

Elected U.S. senator

Deb Fischer
Republican

One-term Republican Deb Fischer was elected with 58% of the vote in 2012. She ran for and won the Republican nomination in the May 15 primary. [73] Other Republicans who ran include retired professor Jack Heidel, Todd Watson, and Dennis Frank Macek. [74]

Lincoln City Councilwoman Jane Raybould ran for and won the Democratic nomination in the May 15 primary. [73] Other Democrats who ran include Frank Svoboda, Chris Janicek, and Larry Marvin, who was a candidate in 2008, 2012, and 2014. [74]

Jim Schultz ran for the Libertarian nomination. [73]

Fischer was easily re-elected. [75]

Nebraska Republican primary
PartyCandidateVotes%
Republican Deb Fischer (incumbent) 128,157 75.79
Republican Todd F. Watson19,66111.63
Republican Jack Heidel9,4135.57
Republican Jeffrey Lynn Stein6,3803.77
Republican Dennis Frank Macek5,4833.24
Total votes169,094 100.00
Nebraska Democratic primary
PartyCandidateVotes%
Democratic Jane Raybould 59,067 63.68
Democratic Chris Janicek18,75220.22
Democratic Frank B. Svoboda10,54811.37
Democratic Larry Marvin4,3934.74
Total votes92,760 100.00
Nebraska general election [32]
PartyCandidateVotes%±%
Republican Deb Fischer (incumbent) 403,151 57.69% –0.08
Democratic Jane Raybould269,91738.62%–3.61
Libertarian Jim Schultz25,3493.63%N/A
Write-in 4660.07%N/A
Total votes698,883 100.00%
Republican hold

Nevada

Nevada election
Flag of Nevada.svg
  2012
2024  
Turnout62.26%
  Jacky Rosen, official portrait, 116th congress (cropped-1).jpg Dean Heller, official portrait, 114th Congress (cropped).jpg
Nominee Jacky Rosen Dean Heller
Party Democratic Republican
Popular vote490,071441,202
Percentage50.41%45.38%

2018 United States Senate election in Nevada results map by county.svg
Rosen:     40–50%     50–60%
Heller:     50–60%     60–70%     70–80%
     80–90%

U.S. senator before election

Dean Heller
Republican

Elected U.S. senator

Jacky Rosen
Democratic

Incumbent Republican Dean Heller was the Republican nominee. [76] He was appointed to the seat in 2011 and then elected with 46% of the vote in 2012. Heller considered running for governor, but chose to seek re-election. [77]

Nevada was the only state in the mid-term elections that had an incumbent Republican senator in a state that Hillary Clinton had won in 2016.

Representative Jacky Rosen [77] is the Democratic nominee. [76]

Rosen defeated Heller in the general election, making Heller the only Republican incumbent to lose re-election in 2018. [78]

Nevada Republican primary
PartyCandidateVotes%
Republican Dean Heller (incumbent) 99,509 69.97
Republican Tom Heck26,29618.49
None of These Candidates 5,9784.20
Republican Sherry Brooks5,1453.62
Republican Sarah Gazala4,0112.82
Republican Vic Harrell1,2820.90
Total votes142,221 100.00
Nevada Democratic primary
PartyCandidateVotes%
Democratic Jacky Rosen 110,567 77.11
None of These Candidates 10,0787.03
Democratic David Drew Knight6,3464.43
Democratic Allen Rheinhart4,7823.33
Democratic Jesse Sbaih4,5403.17
Democratic Sujeet Mahendra3,8352.67
Democratic Danny Burleigh3,2442.26
Total votes143,392 100.00
Nevada general election [32]
PartyCandidateVotes%±%
Democratic Jacky Rosen 490,071 50.41% +5.70
Republican Dean Heller (incumbent)441,20245.38%–0.49
None of These Candidates 15,3031.57%–2.97
Independent Barry Michaels9,2690.95%N/A
Libertarian Tim Hagan9,1960.95%N/A
Independent American Kamau A. Bakari7,0910.73%–4.16
Total votes972,132 100.00%
Democratic gain from Republican

New Jersey

New Jersey election
Flag of New Jersey.svg
  2012
2024  
Turnout53.38%
  Robert Menendez official Senate portrait.jpg Bob Hugin.jpg
Nominee Bob Menendez Bob Hugin
Party Democratic Republican
Popular vote1,711,6541,357,355
Percentage54.01%42.83%

2018 United States Senate election in New Jersey results map by county.svg
2018 United States Senate election in New Jersey results map by municipality.svg
Menendez:     40–50%     50–60%     60–70%     70–80%     80–90%     >90%
Hugin:     40–50%     50–60%     60–70%     70–80%

U.S. senator before election

Bob Menendez
Democratic

Elected U.S. senator

Bob Menendez
Democratic

Republican Bob Hugin [79] was nominated to face two-term Democrat Bob Menendez, who was re-elected with 59% of the vote in 2012. Menendez was originally appointed to the seat in January 2006. He ran for re-election, despite recent scandals that plagued his campaign. [79]

Hugin self-funded most of his campaign. Ultimately, Menendez was re-elected with nearly 54% of the vote. [80]

New Jersey Democratic primary
PartyCandidateVotes%
Democratic Bob Menendez (incumbent) 262,477 62.28
Democratic Lisa A. McCormick158,99837.72
Total votes421,475 100.00
New Jersey Republican primary
PartyCandidateVotes%
Republican Bob Hugin 168,052 75.13
Republican Brian D. Goldberg55,62424.87
Total votes223,676 100.00
New Jersey general election [32]
PartyCandidateVotes%±%
Democratic Bob Menendez (incumbent) 1,711,654 54.01% –4.86
Republican Bob Hugin 1,357,35542.83%+3.46
Green Madelyn R. Hoffman25,1500.79%+0.32
Libertarian Murray Sabrin 21,2120.67%+0.17
Independent Natalie Lynn Rivera19,8970.63%N/A
Independent Tricia Flanagan16,1010.51%N/A
Independent Kevin Kimple9,0870.29%N/A
Independent Hank Schroeder8,8540.28%N/A
Total votes3,169,310 100.00%
Democratic hold

New Mexico

New Mexico election
Flag of New Mexico.svg
  2012
2024  
Turnout55.03%
  Heinrich Official Headshot 2019 (cropped).jpg Mick Rich, NM GOP Senate candidate (43627127715) (cropped).jpg Gary Johnson campaign portrait.jpg
Nominee Martin Heinrich Mick Rich Gary Johnson
Party Democratic Republican Libertarian
Popular vote376,998212,813107,201
Percentage54.09%30.53%15.38%

2018 United States Senate election in New Mexico results map by county.svg
Heinrich:     40–50%     50–60%     60–70%     70–80%
Rich:     40–50%     50–60%     60–70%

U.S. senator before election

Martin Heinrich
Democratic

Elected U.S. senator

Martin Heinrich
Democratic

One-term Democrat Martin Heinrich was elected with 51% of the vote in 2012. He ran. [81] Mick Rich won the Republican nomination unopposed. [81]

Aubrey Dunn Jr., New Mexico Commissioner of Public Lands and otherwise the first Libertarian to ever hold statewide elected office in history, announced his run for the seat, [81] but stepped aside in August to allow former Governor of New Mexico, Gary Johnson's candidacy.

Heinrich was easily re-elected, defeating Rich and Johnson.

New Mexico Democratic primary
PartyCandidateVotes%
Democratic Martin Heinrich (incumbent) 152,145 100.00
Total votes152,145 100.00
New Mexico Republican primary
PartyCandidateVotes%
Republican Mick Rich 67,502 100.00
Total votes67,502 100.00
New Mexico Libertarian primary
PartyCandidateVotes%
Libertarian Aubrey Dunn Jr. 623 100.00
Total votes623 100.00
New Mexico general election [32]
PartyCandidateVotes%±%
Democratic Martin Heinrich (incumbent) 376,998 54.09% +3.08
Republican Mick Rich212,81330.53%–14.75
Libertarian Gary Johnson 107,20115.38%N/A
Total votes697,012 100.00%
Democratic hold

New York

New York election
Flag of New York.svg
  2012
2024  
Turnout52.32%
  Kirsten Gillibrand, official photo, 116th Congress (cropped).jpg Chele Farley 1 (cropped).jpg
Nominee Kirsten Gillibrand Chele Chiavacci Farley
Party Democratic Republican
Popular vote4,056,9311,998,220
Percentage67.00%33.00%

2018 United States Senate election in New York results map by county.svg
County results
Gillibrand:     50–60%     60–70%     70–80%     80–90%     >90%
Farley:     50–60%     60–70%

U.S. senator before election

Kirsten Gillibrand
Democratic

Elected U.S. senator

Kirsten Gillibrand
Democratic

One-term Democrat Kirsten Gillibrand was elected with 72% of the vote in 2012. She had previously been appointed to the seat in 2009 and won a special election to remain in office in 2010. She ran. [82]

Private equity executive Chele Chiavacci Farley has been nominated for U.S. Senate by the Republican and Conservative Parties. [82]

Gillibrand was elected to a second term. [83]

New York general election [32]
PartyCandidateVotes%±%
Democratic Kirsten Gillibrand3,755,48961.98%–4.40
Working Families Kirsten Gillibrand160,1282.64%–1.12
Independence Kirsten Gillibrand99,3251.64%–0.43
Women's Equality Kirsten Gillibrand41,9890.69%N/A
Total Kirsten Gillibrand (incumbent) 4,056,931 66.96% –5.25
Republican Chele Farley1,730,43928.56%+5.83
Conservative Chele Farley246,1714.06%+0.45
Reform Chele Farley21,6100.36%N/A
TotalChele Farley1,998,22032.98%+6.64
Write-in 3,8720.06%N/A
Total votes6,059,023 100.00%
Democratic hold

North Dakota

North Dakota election
Flag of North Dakota.svg
  2012
2024  
Turnout56.27%
  Kevin Cramer, official portrait, 116th congress (cropped).jpg Heidi Heitkamp official portrait 113th Congress.jpg
Nominee Kevin Cramer Heidi Heitkamp
Party Republican Democratic–NPL
Popular vote179,720144,376
Percentage55.45%44.55%

2018 United States Senate election in North Dakota results map by county.svg
Cramer:     50–60%     60–70%     70–80%     80–90%
Heitkamp:     50–60%     60–70%     80–90%

U.S. senator before election

Heidi Heitkamp
Democratic–NPL

Elected U.S. senator

Kevin Cramer
Republican

One-term Democrat Heidi Heitkamp was elected with 50% of the vote in 2012. She won the Democratic nomination unopposed. [84]

Representative Kevin Cramer [84] won the Republican nomination in the June 12 primary. Former Niagara, North Dakota Mayor Thomas O'Neill [84] also ran for the Republican nomination.

Heitkamp was continuously behind in the polls leading up to the election, and Heitkamp ended up losing to Cramer by 11%. [85]

North Dakota Democratic-NPL primary
PartyCandidateVotes%
Democratic–NPL Heidi Heitkamp (incumbent) 36,729 99.58
Write-in 1540.42
Total votes36,883 100.00
North Dakota Republican primary
PartyCandidateVotes%
Republican Kevin Cramer 61,529 87.73
Republican Thomas O'Neill8,50912.13
Write-in 950.14
Total votes70,133 100.00
North Dakota general election [32]
PartyCandidateVotes%±%
Republican Kevin Cramer 179,720 55.11% +5.79
Democratic–NPL Heidi Heitkamp (incumbent)144,37644.27%–5.97
Write-in 2,0420.63%+0.19
Total votes326,138 100.00%
Republican gain from Democratic–NPL

Ohio

Ohio election
Flag of Ohio.svg
  2012
2024  
Turnout54.65%
  Sherrod Brown 117th Congress (2) (cropped).jpg Jim Renacci, Official Portrait, 112th Congress (cropped 3).jpg
Nominee Sherrod Brown Jim Renacci
Party Democratic Republican
Popular vote2,355,9242,053,963
Percentage53.41%46.59%

2018 United States Senate election in Ohio results map by county.svg
Brown:     50–60%     60–70%     70–80%
Renacci:     50–60%     60–70%     70–80%

U.S. senator before election

Sherrod Brown
Democratic

Elected U.S. senator

Sherrod Brown
Democratic

Two-term Democrat Sherrod Brown was re-elected with 51% of the vote in 2012. He ran and was unopposed in Democratic primary. [86]

U.S. Representative Jim Renacci ran for and won the Republican nomination in the May 8 primary. [86] Other Republicans who ran include investment banker Michael Gibbons, [86] businesswoman Melissa Ackison, [86] Dan Kiley, [86] and Don Elijah Eckhart. [86]

Brown won re-election, defeating Renacci. Brown was the only non-judicial statewide Democrat in Ohio to win in 2018. [87]

Ohio Democratic primary
PartyCandidateVotes%
Democratic Sherrod Brown (incumbent) 613,373 100.00
Total votes613,373 100.00
Ohio Republican primary
PartyCandidateVotes%
Republican Jim Renacci 363,622 47.34
Republican Mike Gibbons243,42631.69
Republican Melissa Ackison100,54313.09
Republican Dan Kiley30,6843.99
Republican Don Elijah Eckhart29,7963.88
Write-in 780.01
Total votes768,149 100.00
Ohio general election [88]
PartyCandidateVotes%±%
Democratic Sherrod Brown (incumbent) 2,355,924 53.41% +2.70%
Republican Jim Renacci 2,053,96346.57%+1.87%
Write-in 1,0120.02%N/A
Total votes4,410,898 100.00% N/A
Democratic hold

Pennsylvania

Pennsylvania election
Flag of Pennsylvania.svg
  2012
2024  
Turnout58.18%
  Bob Casey Jr. official photo.jpg Lou Barletta (cropped 2).jpg
Nominee Bob Casey Jr. Lou Barletta
Party Democratic Republican
Popular vote2,792,3272,134,848
Percentage55.74%42.62%

2018 United States Senate election in Pennsylvania results map by county.svg
Casey:     50–60%     60–70%     80–90%
Barletta:     50–60%     60–70%     70–80%

U.S. senator before election

Bob Casey Jr.
Democratic

Elected U.S. senator

Bob Casey Jr.
Democratic

Two-term Democrat Bob Casey Jr. was re-elected with 54% of the vote in 2012. He ran and won the Democratic primary unopposed. [89]

U.S. Representative Lou Barletta ran for and won the Republican nomination in the May 15 primary. [89] Jim Christiana also ran for the Republican nomination. [89]

Casey was easily re-elected. [90]

Pennsylvania Democratic primary
PartyCandidateVotes%
Democratic Bob Casey Jr. (incumbent) 752,008 99.13
Write-in 6,5840.87
Total votes758,592 100.00
Pennsylvania Republican primary
PartyCandidateVotes%
Republican Lou Barletta 433,312 62.80
Republican Jim Christiana 254,11836.83
Write-in 2,5530.37
Total votes689,983 100.00
Pennsylvania general election [32]
PartyCandidateVotes%±%
Democratic Bob Casey Jr. (incumbent) 2,792,437 55.73% +2.04
Republican Lou Barletta 2,134,84842.60%–1.99
Libertarian Dale Kerns50,9071.02%–0.70
Green Neal Gale31,2080.62%N/A
Write-in 1,5680.03%N/A
Total votes5,010,968 100.00%
Democratic hold

Rhode Island

Rhode Island election
Flag of Rhode Island.svg
  2012
2024  
Turnout47.69%
  Sheldon Whitehouse, official portrait, 116th congress.jpg Bob Flanders photo (cropped).jpg
Nominee Sheldon Whitehouse Robert Flanders
Party Democratic Republican
Popular vote231,477144,421
Percentage61.44%38.33%

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

U.S. senator before election

Sheldon Whitehouse
Democratic

Elected U.S. senator

Sheldon Whitehouse
Democratic

Two-term Democrat Sheldon Whitehouse was re-elected with 64% of the vote in 2012. He ran. [91]

Former Rhode Island Supreme Court Associate Justice Robert Flanders [91] was the Republican nominee.

Whitehouse was elected to a third term by a wide margin.

Rhode Island Democratic primary
PartyCandidateVotes%
Democratic Sheldon Whitehouse (incumbent) 89,140 76.79
Democratic Patricia Fontes26,94723.21
Total votes116,087 100.00
Rhode Island Republican primary
PartyCandidateVotes%
Republican Robert Flanders 26,543 87.70
Republican Rocky De La Fuente 3,72212.30
Total votes30,265 100.00
Rhode Island general election [32]
PartyCandidateVotes%±%
Democratic Sheldon Whitehouse (incumbent) 231,477 61.44% –3.37
Republican Robert Flanders 144,42138.33%+3.36
Write-in 8400.22%±0.00
Total votes376,738 100.00%
Democratic hold

Tennessee

Tennessee election
Flag of Tennessee.svg
  2012 November 6, 2018 2024  
Turnout54.46% Decrease2.svg [92] 7.4 pp
  Sen. Marsha Blackburn (R-TN) official headshot - 116th Congress (cropped).jpg Governor Bredesen (cropped).jpg
Nominee Marsha Blackburn Phil Bredesen
Party Republican Democratic
Popular vote1,227,483985,450
Percentage54.71%43.92%

2018 United States Senate election in Tennessee results map by county.svg
TN Senate 2018.svg
2018 US Senate Election in Tennessee by congressional district.svg
Blackburn:     40–50%     50–60%     60–70%     70–80%     80–90%     >90%
Bredesen:     40–50%     50–60%     60–70%     70–80%     80–90%     >90%
Tie:     50%
     No data

U.S. senator before election

Bob Corker
Republican

Elected U.S. Senator

Marsha Blackburn
Republican

Two-term Republican Bob Corker was re-elected with 65% of the vote in 2012. Senator Corker filed his Statement of Candidacy with the Secretary of the U.S. Senate to run for re-election, [93] but on September 26, 2017, Senator Corker announced his intent to retire. [94]

Aaron Pettigrew [95] and Republican U.S. Representative Marsha Blackburn [95] ran for the Republican nomination. Marsha Blackburn became the Republican nominee.

Former Tennessee Governor Phil Bredesen [95] became the Democratic nominee.

Tennessee Republican primary
PartyCandidateVotes%
Republican Marsha Blackburn 613,513 84.48
Republican Aaron Pettigrew112,70515.52
Write-in 130.00
Total votes726,231 100.00
Tennessee Democratic primary
PartyCandidateVotes%
Democratic Phil Bredesen 349,718 91.51
Democratic Gary Davis20,1705.28
Democratic John Wolfe Jr. 12,2693.21
Total votes382,157 100.00
Tennessee general election [96]
PartyCandidateVotes%±%
Republican Marsha Blackburn 1,227,483 54.71% −10.18%
Democratic Phil Bredesen 985,45043.92%+13.51%
Independent Trudy Austin9,4550.42%N/A
Independent Dean Hill8,7170.39%N/A
Independent Kris L. Todd5,0840.23%N/A
Independent John Carico3,3980.15%N/A
Independent Breton Phillips2,2260.10%N/A
Independent Kevin Lee McCants1,9270.09%N/A
Total votes2,243,740 100.00% N/A
Republican hold

Texas

Texas election
Flag of Texas.svg
  2012 November 6, 2018 2024  
Turnout53.01% (of registered voters)
42.07% (of voting age population) [97]
  Ted Cruz official 116th portrait (cropped).jpg Beto O'Rourke April 2019.jpg
Nominee Ted Cruz Beto O'Rourke
Party Republican Democratic
Popular vote4,260,5534,045,632
Percentage50.89%48.33%

2018 United States Senate election in Texas results map by county.svg
TX 2018 senate.png
Cruz:     40–50%     50–60%     60–70%     70–80%     80–90%     >90%
O'Rourke:     40–50%     50–60%     60–70%     70–80%     80–90%     >90%
     No data

U.S. senator before election

Ted Cruz
Republican

Elected U.S. Senator

Ted Cruz
Republican

One-term Republican Ted Cruz was elected with 57% of the vote in 2012. He overwhelmingly won the Republican primary on March 6, 2018. [98] Television producer Bruce Jacobson, [99] Houston energy attorney Stefano de Stefano, [100] former mayor of La Marque Geraldine Sam, [101] Mary Miller, [102] and Thomas Dillingham [103] were Cruz's opponents.

U.S. Representative Beto O'Rourke won the Democratic nomination on March 6, 2018. [98] Other Democrats who ran include Irasema Ramirez Hernandez [104] and Edward Kimbrough. [105]

Nurse Carl Bible ran as an independent. [106] Bob McNeil ran as the candidate of the American Citizen Party. [107] Neal Dikeman was the Libertarian nominee. [108]

O'Rourke ran a strong campaign, creating a close race in what has traditionally been a Republican stronghold. [109] Nevertheless, Cruz was narrowly re-elected to a second term. [110]

Texas Republican primary
PartyCandidateVotes%
Republican Ted Cruz (incumbent) 1,322,724 85.36
Republican Mary Miller94,7156.11
Republican Bruce Jacobson Jr.64,7914.18
Republican Stefano de Stefano44,4562.87
Republican Geraldine Sam22,8871.48
Total votes1,549,573 100.00
Texas Democratic primary
PartyCandidateVotes%
Democratic Beto O'Rourke 644,632 61.81
Democratic Sema Hernandez247,42423.72
Democratic Edward Kimbrough150,85814.47
Total votes1,042,914 100.00
Texas general election [32]
PartyCandidateVotes%±%
Republican Ted Cruz (incumbent) 4,260,553 50.89% –5.57
Democratic Beto O'Rourke 4,045,63248.33%+7.71
Libertarian Neal Dikeman65,4700.78%–1.28
Total votes8,371,655 100.00%
Republican hold

Utah

Utah election
Flag of Utah (2011-2024).svg
  2012
2024  
Turnout74.15%
  Mitt Romney official US Senate portrait (cropped).jpg 3x4.svg
Nominee Mitt Romney Jenny Wilson
Party Republican Democratic
Popular vote665,215328,541
Percentage62.59%30.91%

2018 United States Senate election in Utah results map by county.svg
Romney:     50–60%     60–70%     70–80%     80–90%
Wilson:     40–50%     50–60%

U.S. senator before election

Orrin Hatch
Republican

Elected U.S. senator

Mitt Romney
Republican

Seven-term Republican Orrin Hatch was re-elected with 65% of the vote in 2012. Hatch was the President pro tempore of the United States Senate, as well as the second most-senior Senator. Before the 2012 election, Hatch said that he would retire at the end of his seventh term if he was re-elected. [111] Hatch initially announced his re-election campaign on March 9, 2017, [112] [113] but later announced his plans to retire on January 2, 2018. Former 2012 Republican presidential nominee Mitt Romney was running for the seat. [114]

Professor James Singer was running for the Democratic nomination, but he dropped out and endorsed Salt Lake County Councilwoman Jenny Wilson, who made her Senate bid official on July 17, 2017. [115] [116] Danny Drew [117] [118] also was running, but dropped out and endorsed Jenny Wilson. Mitchell Kent Vice was defeated for the Democratic nomination by Wilson.

Mitt Romney was easily elected, defeating Wilson. [119]

Utah Republican primary
PartyCandidateVotes%
Republican Mitt Romney 240,021 71.27
Republican Mike Kennedy 96,77128.73
Total votes336,792 100.00
Utah general election [32]
PartyCandidateVotes%±%
Republican Mitt Romney 665,215 62.59% –2.72
Democratic Jenny Wilson 328,54130.91%+0.93
Constitution Tim Aalders28,7742.71%–0.46
Libertarian Craig Bowden27,6072.60%N/A
Independent American Reed McCandless12,7081.20%N/A
Write-in 520.00%±0.00
Total votes1,062,897 100.00%
Republican hold

Vermont

Vermont election
Flag of Vermont.svg
  2012
2024  
Turnout55.57%
  Bernie Sanders in March 2020 (cropped).jpg Lawrence Zupan (cropped).jpg
Nominee Bernie Sanders Lawrence Zupan
Party Independent Republican
Popular vote183,64974,815
Percentage67.44%27.47%

2018 United States Senate election in Vermont results map by county.svg
2018 United States Senate election in Vermont results map by municipality.svg
Sanders:     40–50%     50–60%     60–70%
     70–80%     80–90%
Zupan:     40–50%     50–60%
Tie:     40–50%

U.S. senator before election

Bernie Sanders
Independent

Elected U.S. senator

Bernie Sanders
Independent

Two-term Independent Senator Bernie Sanders was re-elected with 71% of the vote in 2012. Sanders, one of two independent members of Congress, has caucused with the Democratic Party since taking office in 2007. In November 2015, Sanders announced his plans to run as a Democrat, rather than an independent, in all future elections. He won the nomination easily. [120]

Sanders easily won election to a third term. [121]

Vermont Democratic primary
PartyCandidateVotes%
Democratic Bernie Sanders (incumbent) 63,683 94.02
Democratic Folsade Adeluola3,7665.56
Write-in 2810.41
Total votes67,730 100.00
Vermont Republican primary
PartyCandidateVotes%
Republican H. Brooke Paige 9,805 37.37
Republican Lawrence Zupan9,38335.86
Republican Jasdeep Pannu4,52717.30
Write-in Bernie Sanders (incumbent)1,0814.13
Republican Rocky De La Fuente 1,0574.04
Write-in 3141.20
Total votes26,167 100.00
Vermont general election [32]
PartyCandidateVotes%±%
Independent Bernie Sanders (incumbent) 183,649 67.36% –3.64
Republican Lawrence Zupan74,81527.44%+2.54
Independent Brad Peacock3,6651.34%N/A
Independent Russell Beste2,7631.01%N/A
Independent Edward Gilbert Jr.2,2440.82%N/A
Independent Folasade Adeluola1,9790.73%N/A
Liberty Union Reid Kane1,1710.43%–0.43
Independent Jon Svitavsky1,1300.41%N/A
Independent Bruce Busa9140.34%N/A
Write-in 2940.11%+0.03
Total votes272,624 100.00%
Independent hold

Virginia

Virginia election
Flag of Virginia.svg
  2012
2024  
Turnout59.14%
  Tim Kaine 116th official portrait.jpg Corey Stewart 8 by 10 crop.jpg
Nominee Tim Kaine Corey Stewart
Party Democratic Republican
Popular vote1,910,3701,374,313
Percentage57.00%41.00%

2018 United States Senate election in Virginia results map by county.svg
Kaine:     40–50%     50–60%     60–70%     70–80%     80–90%
Stewart:     50–60%     60–70%     70–80%

U.S. senator before election

Tim Kaine
Democratic

Elected U.S. senator

Tim Kaine
Democratic

One-term Democrat Tim Kaine was elected with 53% of the vote in 2012. He was re-nominated unopposed. [122] Prince William County Supervisor Corey Stewart [122] was the Republican nominee. Matt Waters was the Libertarian nominee. [123] Kaine defeated Stewart with 57% of the vote. Stewart received 41% of the vote. [124]

Virginia Republican primary
PartyCandidateVotes%
Republican Corey Stewart 136,610 44.86
Republican Nick Freitas 131,32143.12
Republican E. W. Jackson 36,50811.99
Write-in 790.03
Total votes304,518 100.00
Virginia general election [32]
PartyCandidateVotes%±%
Democratic Tim Kaine (incumbent) 1,910,370 57.00% +4.17
Republican Corey Stewart 1,374,31341.00%–5.92
Libertarian Matt Waters61,5651.84%N/A
Write-in 5,5090.16%–0.09
Total votes3,351,757 100.00%
Democratic hold

Washington

Washington election
Flag of Washington.svg
  2012
2024  
Turnout70.74%
  Maria Cantwell (cropped).jpg SusanHutchison-official (cropped).jpg
Nominee Maria Cantwell Susan Hutchison
Party Democratic Republican
Popular vote1,803,3641,282,804
Percentage58.4%41.6%

2018 United States Senate election in Washington results map by county.svg
Cantwell:     50–60%     60–70%     70–80%
Hutchison:     50–60%     60–70%     70–80%

U.S. senator before election

Maria Cantwell
Democratic

Elected U.S. senator

Maria Cantwell
Democratic

Three-term Democrat Maria Cantwell was re-elected with 61% of the vote in 2012. She ran. [125]

Washington holds non-partisan blanket primaries, in which the top two finishers advance to the general election regardless of party. Cantwell and former state Republican Party chair Susan Hutchison faced each other in November.

Cantwell won re-election by a large margin. [126]

Washington blanket primary
PartyCandidateVotes%
Democratic Maria Cantwell (incumbent) 929,961 54.68
Republican Susan Hutchison 413,317 24.30
Republican Keith Swank39,8182.34
Republican Joey Gibson 38,6762.27
Democratic Clint Tannehill35,7702.10
Republican Dave Bryant33,9622.00
Republican Art Coday30,6541.80
Independent Jennifer Ferguson25,2241.48
Republican Tim Owen23,1671.36
Republican Matt Hawkins13,3240.78
Democratic Don Rivers12,6340.74
Libertarian Mike Luke12,3020.72
Republican Glen Stockwell11,6110.68
Independent Thor Amundson9,3930.55
Democratic Mohammad Said8,6490.51
Republican Matthew Heines7,7370.45
Freedom Socialist Steve Hoffman7,3900.43
Republican Goodspaceguy 7,0570.41
Republican John Orlinski6,9050.41
Independent Dave Strider6,8210.40
Republican Rocky De La Fuente 5,7240.34
Green James Robert Deal3,8490.23
Independent Sam Wright3,7610.22
Independent Brad Chase2,6550.16
Democratic George Kalberer2,4480.14
Independent Charlie Jackson2,4110.14
Republican RC Smith2,2380.13
Independent Jon Butler2,0160.12
Independent Alex Tsimerman1,3660.08
Total votes1,700,840 100.00
Washington general election [32]
PartyCandidateVotes%±%
Democratic Maria Cantwell (incumbent) 1,803,364 58.43% –2.02
Republican Susan Hutchison 1,282,80441.57%+2.02
Total votes3,086,168 100.00%
Democratic hold

West Virginia

West Virginia election
Flag of West Virginia.svg
  2012
2024  
Turnout47.04%
  Senator Manchin (cropped 2).jpg Patrick Morrisey by Gage Skidmore.jpg
Nominee Joe Manchin Patrick Morrisey
Party Democratic Republican
Popular vote290,510271,113
Percentage49.57%46.26%

2018 United States Senate election in West Virginia results map by county.svg
Manchin:     40–50%     50–60%     60–70%
Morrisey:     40–50%     50–60%     60–70%     70–80%

U.S. senator before election

Joe Manchin
Democratic

Elected U.S. senator

Joe Manchin
Democratic

One-term Democrat Joe Manchin was elected with 61% of the vote in 2012. He originally won the seat in a 2010 special election. Manchin ran for re-election and won the May 8 Democratic primary. [127] Environmental activist Paula Jean Swearengin, [127] also ran for the Democratic nomination.

West Virginia Attorney General Patrick Morrisey received the Republican nomination in the May 8 primary. Representative Evan Jenkins, [127] coal miner Bo Copley, [127] Jack Newbrough, Don Blankenship, and Tom Willis ran for the Republican nomination. [127]

Despite recent Republican successes in West Virginia, Manchin was able to win re-election to a second term. [128]

West Virginia Democratic primary
PartyCandidateVotes%
Democratic Joe Manchin (incumbent) 112,658 69.86
Democratic Paula Jean Swearengin 48,59430.14
Total votes161,252 100.00
West Virginia Republican primary
PartyCandidateVotes%
Republican Patrick Morrisey 48,007 34.90
Republican Evan Jenkins 40,18529.21
Republican Don Blankenship 27,47819.97
Republican Tom Willis13,5409.84
Republican Bo Copley4,2483.09
Republican Jack Newbrough4,1152.99
Total votes137,573 100.00
West Virginia general election [32]
PartyCandidateVotes%±%
Democratic Joe Manchin (incumbent) 290,510 49.57% –11.00
Republican Patrick Morrisey 271,11346.26%+9.79
Libertarian Rusty Hollen24,4114.17%N/A
Total votes586,034 100.00%
Democratic hold

Wisconsin

Wisconsin election
Flag of Wisconsin.svg
  2012
2024  
Turnout81.81%
  Tammy Baldwin, official portrait, 113th Congress.jpg Scott Walker campaign announcement . (19054459254) (cropped).jpg
Nominee Tammy Baldwin Leah Vukmir
Party Democratic Republican
Popular vote1,472,9141,184,885
Percentage55.36%44.53%

2018 United States Senate election in Wisconsin results map by county.svg
Baldwin:     50–60%     60–70%     70–80%     80–90%
Vukmir:     50–60%     60–70%

U.S. senator before election

Tammy Baldwin
Democratic

Elected U.S. senator

Tammy Baldwin
Democratic

One-term Democrat Tammy Baldwin was elected with 51% of the vote in 2012. She ran. [129]

State Senator Leah Vukmir [129] and businessman and member of Wisconsin Board of Veterans Affairs Kevin Nicholson [129] ran for the Republican nomination, with Vukmir proceeding to the general election.

Baldwin was re-elected with over 55% of the vote. [130]

Wisconsin Democratic primary
PartyCandidateVotes%
Democratic Tammy Baldwin (incumbent) 510,812 99.64
Write-in 1,8480.36
Total votes512,660 100.00
Wisconsin Republican primary
PartyCandidateVotes%
Republican Leah Vukmir 217,230 48.90
Republican Kevin Nicholson191,27643.06
Republican George Lucia18,7864.23
Republican Griffin Jones8,6991.96
Republican Charles Barman7,9591.79
Write-in 3030.07
Total votes444,253 100.00
Wisconsin general election [32]
PartyCandidateVotes%±%
Democratic Tammy Baldwin (incumbent) 1,472,914 55.36% +3.95
Republican Leah Vukmir 1,184,88544.53%–1.33
Write-in 2,9640.11%±0.00
Total votes2,660,763 100.00%
Democratic hold

Wyoming

Wyoming election
Flag of Wyoming.svg
  2012
2024  
Turnout77.43%
  John Barrasso official portrait 112th Congress.jpg Gary Trauner at Campbell County League of Women Voters' General Election Candidates' Forum in Gillette, Wyoming (1).jpg
Nominee John Barrasso Gary Trauner
Party Republican Democratic
Popular vote136,21061,227
Percentage66.96%30.10%

2018 United States Senate election in Wyoming results map by county.svg
County results
Barrasso:     50–60%     60–70%     70–80%     80–90%
Trauner:     50–60%     60–70%

U.S. senator before election

John Barrasso
Republican

Elected U.S. senator

John Barrasso
Republican

One-term Republican John Barrasso was elected with 76% of the vote in 2012. Barrasso was appointed to the seat in 2007 and won a special election in 2008. He ran. [131]

Gary Trauner, [131] a Jackson Hole businessman and U.S. House candidate in 2006 and 2008, was the Democratic nominee.

Barrasso was easily elected to a second term, defeating Trauner. [132]

Wyoming Republican primary
PartyCandidateVotes%
Republican John Barrasso (incumbent) 74,292 64.76
Republican Dave Dodson32,64728.46
Republican John Holtz2,9812.60
Republican Charlie Hardy2,3772.07
Republican Rocky De La Fuente 1,2801.12
Republican Anthony Van Risseghem8700.76
Write-in 2670.23
Total votes114,714 100.00
Wyoming Democratic primary
PartyCandidateVotes%
Democratic Gary Trauner 17,562 98.90
Write-in 1951.10
Total votes17,757 100.00
Wyoming general election [32]
PartyCandidateVotes%±%
Republican John Barrasso (incumbent) 136,210 66.96% –8.70
Democratic Gary Trauner 61,22730.10%+8.45
Libertarian Joseph Porambo5,6582.78%N/A
Write-in 3250.16%–0.01
Total votes203,420 100.00%
Republican hold

See also

Notes

  1. Total of official results for Democratic candidates.
  2. Both general election candidates in California were members of the Democratic Party, having won the top 2 positions in the nonpartisan blanket primary (established by the 2010 California Proposition 14), so all 11.1 million votes in California were counted for Democrats, as tabulated by the Clerk of the House. [1] [2] In 2012, the last time a Republican candidate for the U.S. Senate appeared on the ballot in California, 12.6 million votes were cast, of which 4.7 million, or 38%, were cast for the Republican candidate.
  3. Both independent senators — Angus King and Bernie Sanders — have caucused with the Democratic Party since joining the Senate.
  4. Total of official results for candidates labeled "Independent".
  5. 1 2 Appointee elected
  6. The last elections for this group of senators were in 2012, except for those who were appointed after the resignation or passing of a sitting senator, as noted.
  7. The Fox News Midterm Power Rankings uniquely does not contain a category for Safe/Solid races
  8. Reflects the classic version of the forecast model.
  9. Democrat Al Franken won with 53.2% of the vote in 2014, but resigned on January 2, 2018.
  10. Special elections in Mississippi are nonpartisan, therefore party affiliation is not listed on the ballot.
  11. Republican Thad Cochran won with 59.9% of the vote in 2014, but resigned on April 1, 2018 due to declining health.
  12. Democratic total includes 2 Independents who caucus with the Democrats
  13. Mississippi held a run-off for the special election on November 27, 2018 because no candidate won a majority of the vote in the November 6, 2018 jungle primary.
  14. Indiana was the "tipping point" state.
  15. Under California's "jungle primary" system, the general election was between two Democrats.

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The 2014 United States Senate elections were held on November 4, 2014. A total of 36 seats in the 100-member U.S. Senate were contested. 33 Class 2 seats were contested for regular 6-year terms to be served from January 3, 2015, to January 3, 2021, and 3 Class 3 seats were contested in special elections due to Senate vacancies. The elections marked 100 years of direct elections of U.S. senators. Going into the elections, 21 of the contested seats were held by the Democratic Party, while 15 were held by the Republican Party.

<span class="mw-page-title-main">2016 United States Senate elections</span>

The 2016 United States Senate elections were held on November 8, 2016. The presidential election, House elections, 14 gubernatorial elections, and many state and local elections were held concurrently. In the elections, 34 of the 100 seats—all Class 3 Senate seats—were contested in regular elections; the winners served 6-year terms until January 3, 2023. Class 3 was last up for election in 2010 when Republicans won a net gain of 6 seats.

<span class="mw-page-title-main">2020 United States Senate elections</span>

The 2020 United States Senate elections were held on November 3, 2020, with the 33 class 2 seats of the Senate contested in regular elections. Of these, 21 were held by Republicans, and 12 by Democrats. The winners were elected to 6-year terms from January 3, 2021, to January 3, 2027. Two special elections for seats held by Republicans were also held in conjunction with the general elections: one in Arizona, to fill the vacancy created by John McCain's death in 2018; and one in Georgia, following Johnny Isakson's resignation in 2019. These elections ran concurrently with the 2020 United States presidential election in which incumbent president Donald Trump lost to Democratic nominee Joe Biden.

<span class="mw-page-title-main">2018 Illinois elections</span>

A general election was held in the U.S. state of Illinois on November 6, 2018. The elections for Illinois's 18 congressional districts, Governor, statewide constitutional officers, Illinois Senate, and Illinois House were held on this date.

<span class="mw-page-title-main">2022 United States Senate elections</span>

The 2022 United States Senate elections were held on November 8, 2022, concurrently with other midterm elections at the federal, state, and local levels. Regularly scheduled elections were held for 34 of the 100 seats in the U.S. Senate, the winners of which will serve 6-year terms beginning with the 118th United States Congress. 2 special elections were held to complete unexpired terms. While pundits considered the Republican Party a slight favorite to gain control of the Senate, the Democrats outperformed expectations and expanded the majority they had held since 2021, gaining a seat for a functioning 51–49 majority.

<span class="mw-page-title-main">2018 Alabama elections</span>

A general election was held in the U.S. state of Alabama on November 6, 2018. All Alabama executive officers were up for election along with all of Alabama's seven seats in the United States House of Representatives. Primary elections took place on June 5, 2018 for both major parties.

<span class="mw-page-title-main">2022 United States gubernatorial elections</span>

United States gubernatorial elections were held on November 8, 2022, in 36 states and three territories. As most governors serve four-year terms, the last regular gubernatorial elections for all but two of the seats took place in the 2018 U.S. gubernatorial elections. The gubernatorial elections took place concurrently with several other federal, state, and local elections, as part of the 2022 midterm elections.

<span class="mw-page-title-main">2018 Massachusetts elections</span>

The 2018 Massachusetts general election was held on November 6, 2018, throughout Massachusetts. Primary elections took place on September 4. Early voting took place from October 22 through November 2.

<span class="mw-page-title-main">2022 Vermont Senate election</span>

The 2022 Vermont Senate election took place on November 8, 2022, as part of the biennial United States elections. The election coincided with elections for other offices including the U.S. Senate, U.S. House, Governor, and State House. Vermont voters elected all 30 state senators from 16 districts, with each district electing between one and three senators. State senators serve two-year terms in the Vermont Senate. Primary elections were held on August 9, 2022. This election would be the first to use new districts adopted by the Vermont General Assembly to allocate for population changes across the state after the 2020 census.

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