A fun bit of election math from two non-profit research groups: What will the effect be on rich guys Mitt Romney and Barack Obama's tax bills if the other wins? If Romney wins and enacts his own proposal, he'll pay half what he would under Obama's tax plan—saving almost $5 million a year. Obama, not so loaded as Romney but still well-off, would no longer be in the White House, but he'd be $90,000 richer. Both men would be dinged in 2013 under Obama's proposal. Here's the breakdown, based on Obama's 2011 tax return and Romney's 2010 return: