Party | Seats Won | Seats Not Up | Total Seats | |
Democratic | 19 | 36 | 55 | |
Republican | 15 | 26 | 41 | |
Independent | 0 | 2 | 2 | |
Vacant | 1 | 1 | 2 |
State | Name | Party | Elect 2008 | First Year | Term Expires |
Alabama | Jefferson B. Sessions, III | Republican | • | 1997 | 2015 |
Alabama | Richard C. Shelby | Republican | 1987 | 2011 | |
Alaska | Mark P. Begich | Democratic | • | 2009 | 2015 |
Alaska | Lisa Murkowski | Republican | 2002 | 2011 | |
Arizona | Jon L. Kyl | Republican | 1995 | 2013 | |
Arizona | John S. McCain, III | Republican | 1987 | 2011 | |
Arkansas | Mark Pryor | Democratic | • | 2003 | 2015 |
Arkansas | Blanche L. Lincoln | Democratic | 1999 | 2011 | |
California | Dianne G. B. Feinstein | Democratic | 1992 | 2013 | |
California | Barbara L. Boxer | Democratic | 1993 | 2011 | |
Colorado | Mark Udall | Democratic | • | 2009 | 2015 |
Colorado | Michael Bennet 1 | Democratic | 2009 | 2011 | |
Connecticut | Joseph I. Lieberman | Independent | 1989 | 2013 | |
Connecticut | Christopher J. Dodd | Democratic | 1981 | 2011 | |
Delaware | Thomas R. Carper | Democratic | 2001 | 2013 | |
Delaware | Edward E. Ted Kaufman 2 | Democratic | • | 2009 | 2015 |
Florida | C. William Nelson | Democratic | 2001 | 2013 | |
Florida | Melquiades Martinez 3 | Republican | 2005 | 2011 | |
Georgia | C. Saxby Chambliss | Republican | • | 2003 | 2015 |
Georgia | John Isakson | Republican | 2005 | 2011 | |
Hawaii | Daniel K. Akaka | Democratic | 1990 | 2013 | |
Hawaii | Daniel K. Inouye | Democratic | 1963 | 2011 | |
Idaho | James E. Risch | Republican | • | 2009 | 2015 |
Idaho | Michael D. Crapo | Republican | 1999 | 2011 | |
Illinois | Richard J. Durbin | Democratic | • | 1997 | 2015 |
Illinois | Vacant 4 | 2009 | 2011 | ||
Indiana | Richard G. Lugar | Republican | 1977 | 2013 | |
Indiana | B. Evans Bayh, III | Democratic | 1999 | 2011 | |
Iowa | Thomas R. Harkin | Democratic | • | 1985 | 2015 |
Iowa | Charles E. Grassley | Republican | 1981 | 2011 | |
Kansas | C. Patrick Roberts | Republican | • | 1997 | 2015 |
Kansas | Samuel D. Brownback | Republican | 1996 | 2011 | |
Kentucky | A. Mitchell McConnell, Jr. | Republican | • | 1985 | 2015 |
Kentucky | James P. Bunning | Republican | 1999 | 2011 | |
Louisiana | Mary L. Landrieu | Democratic | • | 1997 | 2015 |
Louisiana | David Vitter | Republican | 2005 | 2011 | |
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 | 2011 | |
Massachusetts | Edward M. Kennedy 5 | Democratic | 1962 | 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 | Vacant 6 | • | 2009 | 2015 | |
Mississippi | Roger F. Wicker 7 | Republican | • | 2007 | 2013 |
Mississippi | W. Thad Cochran | Republican | • | 1979 | 2015 |
Missouri | Claire McCaskill | Democratic | 2007 | 2013 | |
Missouri | Christopher S. Bond | Republican | 1987 | 2011 | |
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 | 2011 | |
New Hampshire | Jeanne Shaheen | Democratic | • | 2009 | 2015 |
New Hampshire | Judd A. Gregg | Republican | 1993 | 2011 | |
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 8 | Democratic | 2009 | 2013 | |
New York | Charles E. Schumer | Democratic | 1999 | 2011 | |
North Carolina | Kay R. Hagin | Democratic | • | 2009 | 2015 |
North Carolina | Richard Burr | Republican | 2005 | 2011 | |
North Dakota | Kent Conrad | Democratic | 1987 | 2013 | |
North Dakota | Byron L. Dorgan | Democratic | 1992 | 2011 | |
Ohio | Sherrod Brown | Democratic | 2007 | 2013 | |
Ohio | George V. Voinovich | Republican | 1999 | 2011 | |
Oklahoma | James Inhofe | Republican | • | 1994 | 2015 |
Oklahoma | Tom Coburn | Republican | 2005 | 2011 | |
Oregon | Jeffrey A. Merkley | Democratic | • | 2009 | 2015 |
Oregon | Ronald L. Wyden | Democratic | 1996 | 2011 | |
Pennsylvania | Robert Casey, Jr. | Democratic | 2007 | 2013 | |
Pennsylvania | Arlen Specter 9 | Republican | 1981 | 2011 | |
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 | 2011 | |
South Dakota | Timothy P. Johnson | Democratic | • | 1997 | 2015 |
South Dakota | John Thune | Republican | 2005 | 2011 | |
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 | Robert F. Bennett | Republican | 1993 | 2011 | |
Vermont | Bernard Sanders | Independent | 2007 | 2013 | |
Vermont | Patrick J. Leahy | Democratic | 1975 | 2011 | |
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 | 2011 | |
West Virginia | Robert C. Byrd | Democratic | 1959 | 2013 | |
West Virginia | John D. Rockefeller, IV | Democratic | • | 1985 | 2015 |
Wisconsin | Herbert H. Kohl | Democratic | 1989 | 2013 | |
Wisconsin | Russell D. Feingold | Democratic | 1993 | 2011 | |
Wyoming | John A. Barrasso 10 | Republican | • | 2007 | 2013 |
Wyoming | Michael B. Enzi | Republican | • | 1997 | 2015 |
Notes: 1: Appointed after Kenneth Salazar resigned to assume the position of Secretary of the Interior. 2: Appointed after Joseph R. Biden Jr. resigned to assume the position of Vice President. 3: Resigned for personal reasons in the Summer of 2009 4: Barack Obama resigned to become President of the United States. A qualificaiton controversy surrounding the appointment of his successor, Roland Burris, by embattled governor Rod Blagojevich prevented him from being seated. 5: Died on August 25, 2009 6: Recount and litigation prevented seating eventual winner Alan S. Franken. 7: Special Election (was appointed in 2007 after C. Trent Lott, Jr. resigned). 8: Appointed after Hillary Rodham Clinton resigned to become Secretary of State 9: Changed Party Affiliation to Democratic on April 30, 2009 10: Special Election (was appointed in 2007 after the death of Craig L. Thomas) |