Current Senate Seats: Democrats: 58, Republicans: 42
Senators Up for Re-election:
Alabama: Richard Shelby (Reublican)
Alaska: Lisa Murkowski (Republican)
Arizona: John McCain (Republican)
Arkansas: Blanche Lincoln (Democrat)
California: Barbara Boxer (Democrat)
Colorado: Ken Salazar (Democrat)
Connecticut: Chriss Dodd (Democrat)
Deleware: Ted Kaufman (Democrat)*
Florida: Mel Martinez (Republican)**
Georgia: Johnny Isakson (Republican)
Hawaii: Daniel Inouye (Democrat)
Idaho: Mike Crapo (Republican)
Illinois: Barack Obama (Democrat)*
Indiana: Evan Bayh (Democrat)
Iowa: Chuck Grassely (Republican)
Kansas: Sam Brownback (Republican)**
Kentucky: Jim Bunning (Republican)
Louisiana: David Vitter (Republican)
Maine: No Race
Maryland: Barbara Mikulski (Democrat)
Massachusettes: No Race
Michigan: No Race
Minnesota: No Race
Mississippi: No Race
Missouri: Kit Bond (Republican)
Montana: No Race
Nebraska: No Race
Nevada: Harry Ried (Democrat)
New Hampshire: Judd Gregg (Republican)
New Jersey: No Race
New Mexico: No Race
New York: Chuck Shumer (Democrat)
North Carolina: Richard Burr (Republican)
North Dakota: Byron Dorgan (Democrat)
Ohio: George Voinovich (Republican)
Oklahoma: Tom Coburn (Republican)
Oregan: Ron Wyden (Democrat)
Pennsylvania: Arlen Spector (Republican)
Rhode Island: No Race
South Carolina: Jim Demint (Republican)
South Dakota: John Thune (Republican)
Tennessee: No Race
Texas: No Race
Utah: Robert Bennit (Republican)
Vermont: Patrick Leahy (Democrat)
Virgina: No Race
Washington: Patty Murray (Democrat)
West Virgina: No Race
Wisconsion: No Race
Wyoming: Russ Feingold (Democrat)