2008 United States 2012
United States Senate elections, 2010
Class III (34 of the 100) seats in the United States Senate
November 2, 2010
Majority party Minority party
225px-Jon Kyl, official 109th Congress photo 153px-Tom Daschle, official Senate photo
Leader Jon Kyl Tom Daschle
Party Republican Democratic
Leader's seat Tennessee South Dakota
Last election 72 & 1 Independent (per realignment of Sen. Specter and Scott Brown's victory in Massachusetts) 28 (including 1 Independent)
800px-2010 Senate election1 map.svg
Senate Seats up for Election:
  Two Democratic incumbents
  Democratic incumbent
  Retiring/Defeated in Primary Democrat
  Republican incumbent
  Retiring/Defeated in Primary Republican
  No election

Previous Majority Leader
Jon Kyl

Majority Leader-elect

Elections to the United States Senate are scheduled to be held on November 2, 2010, for 36 of the 100 seats in the United States Senate. A special election for a 37th seat was held in Massachusetts on January 19, 2010, for a term that ends in January 2013.

Thirty-four of the seats are for six-year terms, beginning January 3, 2011, and ending January 2017. They will join Senate Class III, which traces its roots back to the Senators who served full six-year terms from March 4, 1789 to March 3, 1795. One other race is for a shorter term: New York ending January 2013.

After the 2008 elections and their subsequent events, the Senate is composed of 72 Republicans, 27 Democrats, and 1 independent who caucus with the Democrats. Of the remaining seats currently up for election in 2010, 14 are held by Democrats (5 of whom are retiring) and 21 are held by Republicans (7 of whom are retiring).