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  Collins: 50–60% 60–70% 70–80% 80–90% >90% Allen: 50–60% 60–70% | |||||||||||||||||
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| Elections in Maine |
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The 2008 United States Senate election in Maine took place on November 4, 2008. Incumbent Republican U.S. Senator Susan Collins won re-election to a third term against Democrat Tom Allen, the U.S. Congressman from the 1st district.
| Party | Candidate | Votes | % | |
|---|---|---|---|---|
| Democratic | Tom Allen | 69,932 | 85.6% | |
| Democratic | Tom Ledue | 11,795 | 14.4% | |
| Total votes | 81,727 | 100.0% | ||
Allen tried to tie Collins to George W. Bush, but these tactics failed as Collins maintained her image as a very popular, moderate, independent Republican. She obtained an endorsement from Independent and former Democratic U.S. Senator Joe Lieberman. [1]
When Collins was first elected in 1996 she pledged to serve only two terms (twelve years) in office, which would have been up in 2008. She instead decided to seek a third term, and defeated Allen with over 60% of the vote. She was the only Republican Senate candidate to win in 2008 in a state that was simultaneously won by Democratic presidential nominee Barack Obama.
| Source | Ranking | As of |
|---|---|---|
| The Cook Political Report [2] | Likely R | October 23, 2008 |
| CQ Politics [3] | Lean R | October 31, 2008 |
| Rothenberg Political Report [4] | Likely R | November 2, 2008 |
| Real Clear Politics [5] | Likely R | November 1, 2008 |
| Poll source | Dates administered | Tom Allen (D) | Susan Collins (R) |
|---|---|---|---|
| Rasmussen Reports [6] | November 1, 2008 | 41% | 57% |
| Survey USA [7] | October 20, 2008 | 43% | 54% |
| Rasmussen Reports [8] | October 2, 2008 | 43% | 53% |
| Survey USA [9] | September 22–23, 2008 | 39% | 55% |
| Rasmussen Reports [10] | September 17, 2008 | 42% | 55% |
| Rasmussen Reports [11] | August 12, 2008 | 40% | 55% |
| Rasmussen Reports [12] | July 17, 2008 | 42% | 49% |
| Pan Atlantic SMS Group [13] | June 18, 2008 | 31% | 56% |
| Rasmussen Reports [14] | June 16, 2008 | 42% | 49% |
| Rasmussen Reports [15] | May 14, 2008 | 42% | 52% |
| Rasmussen Reports [16] | April 1, 2008 | 38% | 54% |
| McLaughlin & Associates/ Coalition for a Democratic Workforce [17] | March 6–9, 2008 | 31% | 54% |
| Critical Insights [18] | October 12–30, 2007 | 34% | 54% |
| Survey USA [19] | October 26–29, 2007 | 38% | 55% |
| Research 2000/Daily Kos [20] | October 15–17, 2007 | 33% | 56% |
| Party | Candidate | Votes | % | ±% | |
|---|---|---|---|---|---|
| Republican | Susan Collins (incumbent) | 444,300 | 61.33% | +2.9% | |
| Democratic | Tom Allen | 279,510 | 38.58% | −3.0% | |
| Write-in | 620 | 0.09% | n/a | ||
| Total votes | 724,430 | 100.00% | n/a | ||
| Republican hold | |||||
The 2008 United States Senate elections were held on November 4, 2008, with 35 of the 100 seats in the Senate being contested. 33 seats were up for regular elections; the winners were eligible to serve 6-year terms from January 3, 2009, to January 3, 2015, as members of Class 2. There were also 2 special elections, the winners of those seats would finish the terms that ended on January 3, 2013. The presidential election, which was won by Democrat Barack Obama, elections for all House of Representatives seats; elections for several gubernatorial elections; and many state and local elections occurred on the same date.
The 2008 United States Senate election in New Jersey was held on November 4, 2008. Incumbent Democratic U.S. Senator Frank Lautenberg won re-election to a fifth, non-consecutive term, defeating former Republican congressman Dick Zimmer, who was also the nominee for this seat in 1996.
The United States Senate election in New Hampshire was held on November 4, 2008. Incumbent Republican U.S. Senator John E. Sununu ran for re-election to a second term, but was defeated by Democrat Jeanne Shaheen in a rematch of the 2002 election. Shaheen's win marked the first time since 1972 that Democrats won this seat, and made her the first Democratic Senator elected from New Hampshire since John A. Durkin's victory in 1975.
The 2008 United States Senate election in Massachusetts took place on November 4, 2008. Incumbent Democratic U.S. Senator John Kerry, who remained in the Senate after losing the presidency to incumbent President George W. Bush in the 2004 presidential election, won re-election to a fifth term in office. Kerry later resigned his seat in 2013 to become Secretary of State under the Obama administration.
The 2008 United States Senate election in Colorado was held November 4, 2008. The primary elections were held August 12, 2008. Incumbent Republican U.S. Senator Wayne Allard decided to retire instead of seeking a third term. Democratic nominee Mark Udall won the open seat, making this the first time a Democrat won this seat since 1972, and that Democrats held both Senate seats since 1979.
The 2008 United States Senate election in Oklahoma was held on November 4, 2008. The statewide primary election was held July 29, with the run-off on August 26. Incumbent Republican U.S. Senator Jim Inhofe won re-election to a third term over Democrat Andrew Rice.
The 2008 United States Senate election in Louisiana was held on November 4, 2008. This was the first time since the 1970s that Louisiana used primaries for federal races. Incumbent Senator Mary Landrieu won a third term by 6.39 percentage points despite being forecast as one of the most vulnerable Senate Democrats during 2008. She had received praise and wide publicity for her advocacy after Hurricane Katrina, particularly during hearings regarding FEMA's response to the disaster. This is the last time that Democrats won any statewide election in Louisiana other than Governor.
The 2008 United States Senate election in Nebraska was held on November 4, 2008. The primary elections was held on May 13. Incumbent Senator Chuck Hagel decided to retire instead of seeking a third term. Fellow Republican Mike Johanns won the open seat.
The 2008 United States Senate election in North Carolina was held on Tuesday, November 4, 2008. The Senate election coincided with the presidential, U.S. House elections, gubernatorial, Council of State, and statewide judicial elections. Incumbent Republican U.S. Senator Elizabeth Dole ran for re-election to a second term, but was defeated by Kay Hagan.
The 2008 United States Senate election in Kentucky was held on November 4, 2008. Minority Leader and incumbent Republican U.S. Senator Mitch McConnell won re-election to a fifth term. Although Barack Obama lost Kentucky by a 16.22% margin to John McCain in the concurrent presidential election, McConnell more narrowly kept his seat with a 5.94% margin against businessman Bruce Lunsford. This was a greatly reduced margin from when he won re-election in 2002 with a 29.4% margin.
The 2008 United States Senate election in Texas was held on November 4, 2008. Incumbent Republican John Cornyn defeated Democratic nominee Rick Noriega, a member of the Texas House of Representatives, to win re-election to a second term in office.
The 2008 United States Senate election in Kansas was held on November 4, 2008. Incumbent Republican U.S. Senator Pat Roberts won re-election to a third term.
The 2008 United States Senate election in Georgia took place on November 4, 2008. The runoff election took place on December 2, 2008. Republican Senator Saxby Chambliss, first elected in 2002, sought re-election to his position as a United States Senator from Georgia. He was challenged by Democratic nominee Jim Martin and Libertarian nominee Allen Buckley. After a runoff election on December 2, Chambliss was elected.
The 2008 United States Senate election in Alabama was held on November 4, 2008, to elect one of Alabama's members to the United States Senate. Incumbent Republican U.S. Senator Jeff Sessions won re-election to a third term.
The 2010 United States Senate election in Connecticut was a midterm election which took place on November 2, 2010, to decide a Class III Senator from the State of Connecticut to join the 112th United States Congress. Incumbent Democratic U.S. Senator Chris Dodd suffered from dropping approval ratings in the past few years due to major controversies, leading him to announce in January 2010 that he would retire, instead of seeking a sixth term. As Dodd was a Democrat, Richard Blumenthal, incumbent State Attorney General, announced on the same day that he would run for Dodd's seat. The Connecticut Democratic Party nominated Blumenthal on May 21. Businesswoman Linda McMahon won the state party's nominating convention and the August 10 Republican primary to become the Republican candidate. This was the first open Senate seat in Connecticut since 1980 where Dodd was first elected. Blumenthal was the only non-incumbent Democrat to win a non-special election in 2010.
The 2010 United States Senate election in Colorado took place on November 2, 2010, alongside other elections to the United States Senate in other states as well as elections to the United States House of Representatives and various state and local elections. In December 2008, President-elect Barack Obama nominated incumbent U.S. Senator Ken Salazar as Secretary of the Interior. After Salazar resigned from his seat, Democratic governor Bill Ritter appointed Denver Public Schools Superintendent Michael Bennet to fill the seat.
The 2010 United States Senate election in Iowa was held on November 2, 2010, alongside other elections to the United States Senate in other states as well as elections to the United States House of Representatives and various state and local elections in Iowa. The party primary elections were held on June 8, 2010. Incumbent Republican U.S. Senator Chuck Grassley won reelection to a sixth term. This was the first time since 1986 where the losing Democratic United States Senate nominee carried any of the counties in Iowa for this seat.
The 2010 United States Senate election in Georgia took place on November 2, 2010. Incumbent Republican U.S. Senator Johnny Isakson won re-election to a second term.
The 2010 United States Senate election in Oregon was held on November 2, 2010, alongside other elections to the United States Senate in other states, as well as elections to the United States House of Representatives and various state and local elections. Incumbent Democratic U.S. Senator Ron Wyden won re-election to a third full term by a landslide margin of 18 points, despite the national Republican midterm wave. As of 2022, this is the only senate election since 1998 in which Deschutes County has not supported the Democratic candidate.
The 2012 United States Senate election in Connecticut was held on November 6, 2012, in conjunction with the 2012 U.S. presidential election, other elections to the United States Senate in other states, as well as elections to the United States House of Representatives, and various state and local elections. Primaries to elect Senate candidates from the Republican and Democratic parties were held on Tuesday, August 14, 2012.
 Elections and referendums in Maine | |||||
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| Senate elections |
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| Gubernatorial elections |
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| Legislative elections |
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