Can I state the obvious here, since we all have theories? The obvious is he he didn't bring his game because he doesn't have a game. They have now blamed his performance on everything from strategic — he's a unifier — that's belied by his campaign, calling Mitt Romney everything from from a liar to a tax thief to a felon to a murderer to a dog abuser to a misogynist. This is one of the most negative campaigns in history...
On President Barack Obama's performance in the 2012 Presidential Debate of Oct 3, 2012
ABC This Week (October 7, 2012)