Obama Responds

No backing down:

I don't think he's wrong either. And, in this strange, constantly shifting campaign, I'm not going to venture a guess as to its impact. Matt is just as suspicious of the instant consensus that this is a killer. What we're testing in this election is just how deeply American politics has changed in the wake of the Bush-Cheney disaster. Most seem to think it hasn't; and Obama's campaign is therefore a "fairy-tale." Well, we're finding out.