For Democrats, the 2012 presidential campaign has produced some delicious ironies. For starters, Mitt Romney's share of the final vote will come in at a memorable 47 percent, the same figure he used to disparage half the electorate as self-described "victims" bought off by "free stuff" and "gifts" from President Obama. But for pure schadenfreude, nothing approaches the cosmic payback of the Republicans' self-delusion on Election Day.