Party | Seats Won | Seats Not Up | Total Seats | |
Democratic | 15 | 29 | 44 | |
Republican | 19 | 36 | 55 | |
Independent | 0 | 1 | 1 |
State | Name | Party | Elect 2004 | First Year | Term Expires |
Alabama | Jefferson B. Sessions, III | Republican | 1997 | 2009 | |
Alabama | Richard C. Shelby | Republican | • | 1987 | 2011 |
Alaska | Theodore F. Stevens | Republican | 1968 | 2009 | |
Alaska | Lisa Murkowski | Republican | • | 2002 | 2011 |
Arizona | Jon L. Kyl | Republican | 1995 | 2007 | |
Arizona | John S. McCain, III | Republican | • | 1987 | 2011 |
Arkansas | Mark Pryor | Democratic | 2003 | 2009 | |
Arkansas | Blanche L. Lincoln | Democratic | • | 1999 | 2011 |
California | Dianne G. B. Feinstein | Democratic | 1992 | 2007 | |
California | Barbara L. Boxer | Democratic | • | 1993 | 2011 |
Colorado | A. Wayne Allard | Republican | 1997 | 2009 | |
Colorado | Kenneth Salazar | Democratic | • | 2005 | 2011 |
Connecticut | Joseph I. Lieberman | Democratic | 1989 | 2007 | |
Connecticut | Christopher J. Dodd | Democratic | • | 1981 | 2011 |
Delaware | Thomas R. Carper | Democratic | 2001 | 2007 | |
Delaware | Joseph R. Biden, Jr. | Democratic | 1973 | 2009 | |
Florida | C. William Nelson | Democratic | 2001 | 2007 | |
Florida | Melquiades Martinez | Republican | • | 2005 | 2011 |
Georgia | C. Saxby Chambliss | Republican | 2003 | 2009 | |
Georgia | John Isakson | Republican | • | 2005 | 2011 |
Hawaii | Daniel K. Akaka | Democratic | 1990 | 2007 | |
Hawaii | Daniel K. Inouye | Democratic | • | 1963 | 2011 |
Idaho | Larry E. Craig | Republican | 1991 | 2009 | |
Idaho | Michael D. Crapo | Republican | • | 1999 | 2011 |
Illinois | Richard J. Durbin | Democratic | 1997 | 2009 | |
Illinois | Barack Obama | Democratic | • | 2005 | 2011 |
Indiana | Richard G. Lugar | Republican | 1977 | 2007 | |
Indiana | B. Evans Bayh, III | Democratic | • | 1999 | 2011 |
Iowa | Thomas R. Harkin | Democratic | 1985 | 2009 | |
Iowa | Charles E. Grassley | Republican | • | 1981 | 2011 |
Kansas | C. Patrick Roberts | Republican | 1997 | 2009 | |
Kansas | Samuel D. Brownback | Republican | • | 1996 | 2011 |
Kentucky | A. Mitchell McConnell, Jr. | Republican | 1985 | 2009 | |
Kentucky | James P. Bunning | Republican | • | 1999 | 2011 |
Louisiana | Mary L. Landrieu | Democratic | 1997 | 2009 | |
Louisiana | David Vitter | Republican | • | 2005 | 2011 |
Maine | Olympia J. Snowe | Republican | 1995 | 2007 | |
Maine | Susan M. Collins | Republican | 1997 | 2009 | |
Maryland | Paul S. Sarbanes | Democratic | 1977 | 2007 | |
Maryland | Barbara A. Mikulski | Democratic | • | 1987 | 2011 |
Massachusetts | Edward M. Kennedy | Democratic | 1962 | 2007 | |
Massachusetts | John F. Kerry | Democratic | 1985 | 2009 | |
Michigan | Debbie A. Stabenow | Democratic | 2001 | 2007 | |
Michigan | Carl M. Levin | Democratic | 1979 | 2009 | |
Minnesota | Mark Dayton | Democratic | 2001 | 2007 | |
Minnesota | Norman Coleman | Republican | 2003 | 2009 | |
Mississippi | C. Trent Lott, Jr. | Republican | 1989 | 2007 | |
Mississippi | W. Thad Cochran | Republican | 1979 | 2009 | |
Missouri | James A. Talent | Republican | 2002 | 2007 | |
Missouri | Christopher S. Bond | Republican | • | 1987 | 2011 |
Montana | Conrad R. Burns | Republican | 1989 | 2007 | |
Montana | Max S. Baucus | Democratic | 1979 | 2009 | |
Nebraska | E. Benjamin Nelson | Democratic | 2001 | 2007 | |
Nebraska | Charles T. Hagel | Republican | 1997 | 2009 | |
Nevada | John E. Ensign | Republican | 2001 | 2007 | |
Nevada | Harry M. Reid | Democratic | • | 1987 | 2011 |
New Hampshire | John E. Sununu | Republican | 2003 | 2009 | |
New Hampshire | Judd A. Gregg | Republican | • | 1993 | 2011 |
New Jersey | Jon S. Corzine | Democratic | 2001 | 2007 | |
New Jersey | Frank R. Lautenberg | Democratic | 2003 | 2009 | |
New Mexico | Jesse F. Bingaman, Jr. | Democratic | 1983 | 2007 | |
New Mexico | Peter V. Domenici | Republican | 1973 | 2009 | |
New York | Hillary Rodham Clinton | Democratic | 2001 | 2007 | |
New York | Charles E. Schumer | Democratic | • | 1999 | 2011 |
North Carolina | Elizabeth H. Dole | Republican | 2003 | 2009 | |
North Carolina | Richard Burr | Republican | • | 2005 | 2011 |
North Dakota | Kent Conrad | Democratic | 1987 | 2007 | |
North Dakota | Byron L. Dorgan | Democratic | • | 1992 | 2011 |
Ohio | R. Michael DeWine | Republican | 1995 | 2007 | |
Ohio | George V. Voinovich | Republican | • | 1999 | 2011 |
Oklahoma | James Inhofe | Republican | 1994 | 2009 | |
Oklahoma | Tom Coburn | Republican | • | 2005 | 2011 |
Oregon | Gordon H. Smith | Republican | 1997 | 2009 | |
Oregon | Ronald L. Wyden | Democratic | • | 1996 | 2011 |
Pennsylvania | Richard J. Santorum | Republican | 1995 | 2007 | |
Pennsylvania | Arlen Specter | Republican | • | 1981 | 2011 |
Rhode Island | Lincoln D. Chafee | Republican | 1999 | 2007 | |
Rhode Island | John F. Reed | Democratic | 1997 | 2009 | |
South Carolina | Lindsey O. Graham | Republican | 2003 | 2009 | |
South Carolina | Jim DeMint | Republican | • | 2005 | 2011 |
South Dakota | Timothy P. Johnson | Democratic | 1997 | 2009 | |
South Dakota | John Thune | Republican | • | 2005 | 2011 |
Tennessee | William H. Frist | Republican | 1995 | 2007 | |
Tennessee | Lamar A. Alexander | Republican | 2003 | 2009 | |
Texas | Kay Bailey Hutchison | Republican | 1993 | 2007 | |
Texas | John Cornyn | Republican | 2002 | 2009 | |
Utah | Orrin G. Hatch | Republican | 1977 | 2007 | |
Utah | Robert F. Bennett | Republican | • | 1993 | 2011 |
Vermont | James M. Jeffords | Independent | 1989 | 2007 | |
Vermont | Patrick J. Leahy | Democratic | • | 1975 | 2011 |
Virginia | George F. Allen | Republican | 2001 | 2007 | |
Virginia | John W. Warner | Republican | 1979 | 2009 | |
Washington | Maria Cantwell | Democratic | 2001 | 2007 | |
Washington | Patricia Murray | Democratic | • | 1993 | 2011 |
West Virginia | Robert C. Byrd | Democratic | 1959 | 2007 | |
West Virginia | John D. Rockefeller, IV | Democratic | 1985 | 2009 | |
Wisconsin | Herbert H. Kohl | Democratic | 1989 | 2007 | |
Wisconsin | Russell D. Feingold | Democratic | • | 1993 | 2011 |
Wyoming | Craig Thomas | Republican | 1995 | 2007 | |
Wyoming | Michael B. Enzi | Republican | 1997 | 2009 |