Joe Biden presents a problem for John McCain, Jeanne Cummings notes on Politico. “McCain knows Biden well," says one Republican insider. "He knows how good he is as a knife fighter." Stacked up against Biden, all of the rumored GOP short-listers reveal potentially fatal flaws:
- Mitt Romney: Considering Biden's middle-class roots, the multimillionaire former governor could undermine McCain's claims of Obama elitism.
- Gov. Tim Pawlenty: Though happy to parrot McCain's talking points, the younger Minnesotan can't match Biden's experience in foreign affairs and partisan debate.
- Tom Ridge: The former Homeland Security chief, and Pennsylvania governor, supports abortion rights—a stance that could overshadow his national security cred with hardcore conservatives.
- Sen. Joseph Lieberman: The Connecticut independent and McCain are close, but Lieberman's Democratic past will alienate Republicans.