List of U.S. Senators Senator State Seat Up Daniel Akaka Hawaii 2006 Lamar Alexander Tennessee 2008 Wayne Allard Colorado 2008 George Allen, Jr Virginia 2006 Max Baucus Montana 2008 Evan Bayh Indiana 2004 Robert Bennett Utah 2004 Joseph Biden, Jr Delaware 2006 Jeff Bingaman New Mexico 2006 Christopher S. Bond Missouri 2004 Barbara Boxer California [...]