Janet Ritz (Huffington Post) claims that Romney used a creationist debate tactic of rapidly inundating your opponent with lies. (hat tip Bill):
The Gish Gallop, named after creationist Duane Gish, is the debating technique of drowning the opponent in such a torrent of half-truths, lies, and straw-man arguments that the opponent cannot possibly answer every falsehood in real time. The term was coined by Eugenie Scott of the National Center for Science Education.
Matt Stoller (Naked Capitalism) notes that Romney was lying but reminds us that Obama isn't really an opponent of Romney on most issues:
[Obamas'] second term agenda is to cut Social Security, Medicare, frack, cut corporate taxes, bust more teachers unions and pass more neoliberal trade agreements. He is proud of this record. So are his people. But he knows he can’t run on it because it’s unpopular, so instead, he presented himself as a nice likeable guy.