revised April 14,
33 seats at stake: 21 held by Democrats, 10 by Republicans and 2 by Independents.
11 open seats: 6 held by Democrats, 4 by Republicans and 1 by Independent.
10 retirements, 1 defeated in primary.
Of 23 sitting Senators seeking re-election in 2012, 21 succeeded.
12 new Senators elected.
Democrats won 23 races, Republicans won 8 races, and Independents won 2 races.
Balance after was 53 Democrats, 45 Republicans and 2 Independents.
Republicans had high hopes of winning a majority in the Senate, but Democrats held all their open seats except one (Nebraska), defended vulnerable incumbents (ex. Missouri, Montana...), and actually managed to pick up seats in Indiana and Massachusetts; additionally the Maine seat was won by an Independent. Of the 65 major party nominees, 18 were women (27.7 percent), including 12 Democrats and six Republicans. The new Senators are Democrats Tammy Baldwin (WI), Joe Donnelly (CT), Martin Heinrich (NM), Heidi Heitkamp (ND), Mazie Hirono (HI), Tim Kaine (VA), Chris Murphy (CT) and Elizabeth Warren (MA), Republicans Ted Cruz (TX), Deb Fischer (NE), Jeff Flake (AZ) and Independent Angus King (ME).*
See also: DSCC organization | NRSC organization | Senate Races 2010
Winners in bold; not every third party and independent candidate is shown.
|[John Ensign (R) announced he would retire on March 7, 2011. Then, on April 21, he announced his resignation, effective May 3. Gov. Sandoval appointed Rep. Dean Heller (R) to fill the remainder of the term, and Heller was sworn in on May 9]|
For the 2011-12 cycle, the Federal Election Commission (+) reported that Senate candidate committees raised $742.2 million (Rep. $416.1 million, Dem. $307.9 million and other $18.2 million) and spent $747.9 million (Rep. $417.9 million, Dem. $315.6 million and other $14.5 million). The party committees raised and spent additional millions. The Center for Responsive Politics reported that for the 2012 cycle the NRSC raised $117.0 million, spent $113.8 million and finished with cash on hand of $3.4 million and the DSCC raised $145.9 million, spent $144.9 million and finished with $1.8 million (these numbers include their independent expenditures). Other outside groups spent many tens of millions more (+). A look at the most expensive general election races shows the significant role outside spending played in some contests.
There were also
developments in three seats in the period between Election Day,
November 6, and the
start of the 113th Congress.
SC - On Dec. 6, Sen. Jim DeMint (R-SC) surprised just about everyone when he announced he would resign effective Jan. 1, 2013 to become president of the Heritage Foundation; Gov. Nikki Haley (R) announced on Dec. 17 that she would appoint Rep. Tim Scott (R) to the position.
HI - On Dec. 17, Sen. Daniel Inouye (D-HI), elected to a ninth term in 2010, died; Gov. Neil Abercrombie (D) announced on Dec. 26 his selection of Lt. Gov. Brian Schatz (D) for the position.
MA - On Dec. 21, President Obama announced he would nominate Sen. John Kerry (D-MA) as Secretary of State; Kerry was confirmed on Jan. 29, 2013 and on Jan. 30 Gov. Deval Patrick (D) appointed William "Mo" Cowan to fill in until a special election is held (on Jan. 28, MA Sec. of State William Galvin announced the dates as April 30 for the primary and June 25 for the general election).