Party | Seats Won | Seats Not Up | Total Seats | |
Democratic | 13 | 38 | 51 | |
Republican | 24 | 23 | 47 | |
Independent | 0 | 2 | 2 |
State | Name | Party | Elect 2010 | First Year | Term Expires |
Alabama | Jefferson B. Sessions, III | Republican | 1997 | 2015 | |
Alabama | Richard C. Shelby | Republican | • | 1987 | 2017 |
Alaska | Mark P. Begich | Democratic | 2009 | 2015 | |
Alaska | Lisa Murkowski 1 | Republican | • | 2002 | 2017 |
Arizona | Jon L. Kyl | Republican | 1995 | 2013 | |
Arizona | John S. McCain, III | Republican | • | 1987 | 2017 |
Arkansas | Mark Pryor | Democratic | 2003 | 2015 | |
Arkansas | John Boozman | Republican | • | 2011 | 2017 |
California | Dianne G. B. Feinstein | Democratic | 1992 | 2013 | |
California | Barbara L. Boxer | Democratic | • | 1993 | 2017 |
Colorado | Mark Udall | Democratic | 2009 | 2015 | |
Colorado | Michael Bennet | Democratic | • | 2009 | 2017 |
Connecticut | Joseph I. Lieberman | Independent | 1989 | 2013 | |
Connecticut | Richard Blumenthal | Democratic | • | 2011 | 2017 |
Delaware | Thomas R. Carper | Democratic | 2001 | 2013 | |
Delaware | Christopher Coons 2 | Democratic | • | 2010 | 2015 |
Florida | C. William Nelson | Democratic | 2001 | 2013 | |
Florida | Marco Rubio | Republican | • | 2011 | 2017 |
Georgia | C. Saxby Chambliss | Republican | 2003 | 2015 | |
Georgia | John Isakson | Republican | • | 2005 | 2017 |
Hawaii | Daniel K. Akaka | Democratic | 1990 | 2013 | |
Hawaii | Daniel K. Inouye | Democratic | • | 1963 | 2017 |
Idaho | James E. Risch | Republican | 2009 | 2015 | |
Idaho | Michael D. Crapo | Republican | • | 1999 | 2017 |
Illinois | Richard J. Durbin | Democratic | 1997 | 2015 | |
Illinois | Mark S. Kirk | Republican | • | 2010 | 2017 |
Indiana | Richard G. Lugar | Republican | 1977 | 2013 | |
Indiana | Daniel R. Coats | Republican | • | 2011 | 2017 |
Iowa | Thomas R. Harkin | Democratic | 1985 | 2015 | |
Iowa | Charles E. Grassley | Republican | • | 1981 | 2017 |
Kansas | C. Patrick Roberts | Republican | 1997 | 2015 | |
Kansas | Jerry Moran | Republican | • | 2011 | 2017 |
Kentucky | A. Mitchell McConnell, Jr. | Republican | 1985 | 2015 | |
Kentucky | Rand Paul | Republican | • | 2011 | 2017 |
Louisiana | Mary L. Landrieu | Democratic | 1997 | 2015 | |
Louisiana | David Vitter | Republican | • | 2005 | 2017 |
Maine | Olympia J. Snowe | Republican | 1995 | 2013 | |
Maine | Susan M. Collins | Republican | 1997 | 2015 | |
Maryland | Benjamin L. Cardin | Democratic | 2007 | 2013 | |
Maryland | Barbara A. Mikulski | Democratic | • | 1987 | 2017 |
Massachusetts | Scott Brown 3 | Republican | 2010 | 2013 | |
Massachusetts | John F. Kerry | Democratic | 1985 | 2015 | |
Michigan | Debbie A. Stabenow | Democratic | 2001 | 2013 | |
Michigan | Carl M. Levin | Democratic | 1979 | 2015 | |
Minnesota | Amy Klobuchar | Democratic | 2007 | 2013 | |
Minnesota | Alan S. Franken | Democratic | 2009 | 2015 | |
Mississippi | Roger F. Wicker | Republican | 2007 | 2013 | |
Mississippi | W. Thad Cochran | Republican | 1979 | 2015 | |
Missouri | Claire McCaskill | Democratic | 2007 | 2013 | |
Missouri | Roy Blunt | Republican | • | 2011 | 2017 |
Montana | Jon Tester | Democratic | 2007 | 2013 | |
Montana | Max S. Baucus | Democratic | 1979 | 2015 | |
Nebraska | E. Benjamin Nelson | Democratic | 2001 | 2013 | |
Nebraska | Michael O. Johanns | Republican | 2009 | 2015 | |
Nevada | John E. Ensign | Republican | 2001 | 2013 | |
Nevada | Harry M. Reid | Democratic | • | 1987 | 2017 |
New Hampshire | Jeanne Shaheen | Democratic | 2009 | 2015 | |
New Hampshire | Kelly Ayotte | Republican | • | 2011 | 2017 |
New Jersey | Robert Menendez | Democratic | 2006 | 2013 | |
New Jersey | Frank R. Lautenberg | Democratic | 2003 | 2015 | |
New Mexico | Jesse F. Bingaman, Jr. | Democratic | 1983 | 2013 | |
New Mexico | Thomas S. Udall | Democratic | 2009 | 2015 | |
New York | Kirsten Gillibrand 4 | Democratic | • | 2009 | 2013 |
New York | Charles E. Schumer | Democratic | • | 1999 | 2017 |
North Carolina | Kay R. Hagin | Democratic | 2009 | 2015 | |
North Carolina | Richard M. Burr | Republican | • | 2005 | 2017 |
North Dakota | Kent Conrad | Democratic | 1987 | 2013 | |
North Dakota | John Hoeven | Republican | • | 2011 | 2017 |
Ohio | Sherrod Brown | Democratic | 2007 | 2013 | |
Ohio | Rob Portman | Republican | • | 2011 | 2017 |
Oklahoma | James Inhofe | Republican | 1994 | 2015 | |
Oklahoma | Tom Coburn | Republican | • | 2005 | 2017 |
Oregon | Jeffrey A. Merkley | Democratic | 2009 | 2015 | |
Oregon | Ronald L. Wyden | Democratic | • | 1996 | 2017 |
Pennsylvania | Robert Casey, Jr. | Democratic | 2007 | 2013 | |
Pennsylvania | Pat Toomey | Republican | • | 2011 | 2017 |
Rhode Island | Sheldon Whitehouse | Democratic | 2007 | 2013 | |
Rhode Island | John F. Reed | Democratic | 1997 | 2015 | |
South Carolina | Lindsey O. Graham | Republican | 2003 | 2015 | |
South Carolina | Jim DeMint | Republican | • | 2005 | 2017 |
South Dakota | Timothy P. Johnson | Democratic | 1997 | 2015 | |
South Dakota | John R. Thune | Republican | • | 2005 | 2017 |
Tennessee | Robert P. 'Bob' Corker, Jr. | Republican | 2007 | 2013 | |
Tennessee | Lamar A. Alexander | Republican | 2003 | 2015 | |
Texas | Kay Bailey Hutchison | Republican | 1993 | 2013 | |
Texas | John Cornyn | Republican | 2002 | 2015 | |
Utah | Orrin G. Hatch | Republican | 1977 | 2013 | |
Utah | Mike Lee | Republican | • | 2011 | 2017 |
Vermont | Bernard Sanders | Independent | 2007 | 2013 | |
Vermont | Patrick J. Leahy | Democratic | • | 1975 | 2017 |
Virginia | James H. Webb, Jr. | Democratic | 2007 | 2013 | |
Virginia | Mark Warner | Democratic | 2009 | 2015 | |
Washington | Maria Cantwell | Democratic | 2001 | 2013 | |
Washington | Patricia Murray | Democratic | • | 1993 | 2017 |
West Virginia | Joe Manchin, III 5 | Democratic | • | 2010 | 2013 |
West Virginia | John D. Rockefeller, IV | Democratic | 1985 | 2015 | |
Wisconsin | Herbert H. Kohl | Democratic | 1989 | 2013 | |
Wisconsin | Ron Johnson | Republican | • | 2011 | 2017 |
Wyoming | John A. Barrasso | Republican | 2007 | 2013 | |
Wyoming | Michael B. Enzi | Republican | 1997 | 2015 | |
Notes: 1: Reelected as a write-in candidate after losing the Repbulican Primary 2: Special Election (Edward E. Kaufman was appointed after Joseph R. Biden Jr. resigned to assume the position of Vice President.) 3: Elected in a special Election held on January 19, 2010 to serve the remainder of Sen. Edward M. Kennedy's term. (Sen Kennedy died on Aug 25, 2009). 4: Special Election (Kirsten Gillibrand was appointed after Hillary Rodham Clinton resigned to become Secretary of State) 5: Special Election to serve the remainder of Sen. Robert C. Byrd's term (Sen. Byrd died on June 28, 2010) |