The Washington Post's Dana Milbank takes a gander at possible contenders out of the nation's 50 governors:

Republicans

Arnold Schwarzenegger (Calif): Needs constitutional amendment -- quickly.

Mitt Romney (Mass.): Prettier than John Edwards.

George E. Pataki (N.Y.) : He'll have to outfox Rudy.

Jeb Bush (Fla.): Many hope he'll break his promise not to run.

Haley Barbour (Miss.): Deep ties to Washington steakhouse of dubious value.

Mike Huckabee (Ark.): Recent weight loss increases speculation.

Mark Sanford (S.C.): Can't run if his friend John McCain does.

Bill Owens (Colo.): Embarrassed by Democratic victories in his state in '04.

Democrats

Tom Vilsack (Iowa): Early favorite to win the Iowa caucuses.

Mark R. Warner (Va.): A southern Democrat.

Phil Bredesen (Tenn.): Could do better in his state than Al Gore did.

Bill Richardson (N.M.): Dogged by his Energy Department tenure.

Jennifer M. Granholm (Mich.): Waiting for the Schwarzenegger amendment to pass.

Janet Napolitano (Ariz.): Her home state may be too red for Democrats to win.

Rod Blagojevich (Ill.): His home state may be too blue to matter.

Governor's have tended to do well in Presidential races, winning every contest since 1976, with the exception of 1988. It might be wise, then, for either party to nominate a governor in 2008.