For related races, see 2012 United States elections.
2012 United States Senate elections
← 2010
November 6, 2012
2014 →
2013 (MA, NJ) →
33 of the 100 seats in the United States Senate 51 seats needed for a majority
Majority party
Minority party
Leader
Harry Reid
Mitch McConnell
Party
Democratic
Republican
Leader's seat
Nevada
Kentucky
Seats before
51
47
Seats after
53
45
Seat change
2
2
Popular vote
49,988,282[1]
39,128,301[1]
Percentage
53.4%
41.8%
Seats up
21
10
Races won
23
8
Third party
Party
Independent
Seats before
2[a]
Seats after
2[b]
Seat change
Popular vote
961,284[1]
Percentage
1.0%
Seats up
2
Races won
2
Results of the elections: Democratic gain Republican gain Independent gain Democratic hold Republican hold Independent hold No election
Majority Leader before election
Harry Reid
Democratic
Elected Majority Leader
Harry Reid
Democratic
The 2012 United States Senate elections were held on November 6, 2012, with 33 of the 100 seats in the Senate, all Class 1 seats, being contested in regular elections whose winners would serve six-year terms beginning January 3, 2013, with the 113th Congress. Democrats had 21 seats up for election, plus 1 Independent and 1 Independent Democrat, while the Republicans had only 10 seats up for election. The presidential election, elections to the House of Representatives, elections for governors in 14 states and territories, and many state and local elections were also held on the same day.
The Democrats gained Republican-held seats in Massachusetts and Indiana and one from an Independent Democrat in Connecticut, leaving them with a total of 53 seats. Additionally, they held open seats in Hawaii, New Mexico, North Dakota, Virginia, and Wisconsin. The Republicans, despite losing two of their seats, picked up an open seat in Nebraska and retained open seats in Arizona and Texas, ending with a total of 45 seats. The Independents retained a seat in Vermont and gained an additional seat from the Republicans in Maine, bringing their total to two seats. Both Independents would caucus with the Democrats, forming a majority caucus with a combined total of 55 seats.
As of 2023[update], this was the last time the Democrats won seats in Florida, Indiana, Missouri, and North Dakota; and at least one seat in a state that was lost by the Democratic candidate in the concurrent presidential election. It was also the last time the Republican Party won a seat in Nevada. The Democrats would not win control of the Senate again until 2020[c] and would not win an outright majority again until 2022.
Additionally, this was the first time since 1936 that a two-term Democratic presidential candidate had Senate coattails on both occasions. (Although Franklin Roosevelt won third and fourth terms in 1940 and 1944 respectively, he lost Senate seats on both occasions.) This was also the first time since 1964 in which either party had to defend more than two-thirds of the Senate seats up for grabs but managed to make net gains.[2][3] As of 2023[update], this is the last election cycle in which an incumbent senator lost renomination, the last election cycle in which there were no runoff elections, the last time a party flipped a Senate seat while failing to carry the state in the presidential election, and the last time a party flipped a Senate seat in a state whose other seat was flipped by the opposition party in the previous election cycle.
^ abcCite error: The named reference Clerk new format was invoked but never defined (see the help page).
^Weisman, Jonathan (November 6, 2012). "Democrats Keep Control of the Senate". The New York Times.
^Bendavid, Naftali (November 6, 2012). "Democrats Retain Control of U.S. Senate". The Wall Street Journal.
Cite error: There are <ref group=lower-alpha> tags or {{efn}} templates on this page, but the references will not show without a {{reflist|group=lower-alpha}} template or {{notelist}} template (see the help page).
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