After getting thumped by Sen. Bob Casey last year, former Pennsylvania Sen. Rick Santorum is looking at a comeback. True, Politics Nation spotted Santorum in Washington last week, but he's not looking at replacing Sen. Arlen Specter: He's actually thinking about a race to replace Pennsylvania Gov. Ed Rendell in 2010, according to the Pittsburgh Tribune-Review.

Rendell, who won re-election by a wide margin last year, is term-limited. Santorum would likely begin a statewide race at the head of the GOP pack.