The Next Person to Believe This Story
Will probably be the first. Raw Story (no link) is pushing an ancient fabrication of an altercation between John McCain and his wife. For starters it is claimed that McCain referred to his wife as a trollop. And the precipitating event is so minimalist (but that's probably the point) that it's hard to believe anybody would get angry about it.
Still if the caricature of McCain is that he gets angry, and the caricature of Obama is that he hates America, I'll take the senator from Arizona in the finals.