Alex Castellanos is a very smart GOP consultant and TV analyst. Listen to his quick encapsulation of exactly what happened to the Obama campaign when Mitt Romney showed up to a debate.

President Obama hasn't really been trying to get elected again, he's been trying to stop Mitt Romney from getting elected. And, that cracked... Mitt Romney was not the guy that Barack Obama had been painting... Barack Obama now has no campaign for the future why he's indespensibly needed...

This is a man with two empty holsters, his campaign could collapse.