What to watch for this evening? It could come down to just two states.
The polling site FiveThirtyEight.com has the lowdown on what to watch out for at 7 p.m. (Eastern Time) tonight.
Virginia and Indiana
Says Silver, "If those states go roughly as expected (meaning, say, an Obama win in Virginia and a close race in Indiana), we can conclude with almost literal 100 percent certainty that Obama will win the election."