DNC: What Does John McCain Know?

GOP consultant Matthew Dowd says it's the arrogance of candidates that makes them decide things like not to release their tax returns. But he also says that Mitt must have good reason to want to pay the price to keep them out of the campaign narrative.

There's obviously something there, because if there was nothing there, he would say have at it... so there's obviously something there that compromises what he said in the past about something...

If he had twenty years of great clean everything is fine, it would all be out there.... but it is arrogance...

The funniest part of the new DNC ad highlighting people like Dowd talking about Mitt is the claim that John McCain's decision to pick Sarah Palin for his VP candidate was triggered by viewing 23 years of Romney tax returns.

What does John McCain know that the American people don't?