After Barack Obama picked Joe Biden as his running mate, the GOP launched the Biden Gaffe Clock. It's still in its infancy, but if you click here, you can catch some wince-inducing footage of Biden calling Obama--wait for it--"Barack America." (The look on Obama's face is just priceless.)
A question: might the Biden pick bode poorly for Mitt Romney? After all, Mitt's something of a gaffe-meister himself--and if he's tapped as McCain's VP, the Republicans might have to abandon this line of attack. (Of course, Mitt's fundraising skills could be worth that sacrifice.)
P.S.--My colleague David Bernstein (who's in Denver with the Democrats; I'll be in St. Paul with the GOP next week) has already argued that McCain's multiple-home gaffe has greatly reduced the chances of a Romney selection.