In the past, when some candidates have been worried about their chances, they've waited until the Friday evening before the election to launch a really vicious attack ad against the opponent. It makes the rounds over the weekend, and there's almost no way for the opponent to counter the ad, given that it's a weekend.
I'm curious as to what Obama might try on Friday. It's been said that Romney doesn't just have no skeletons in his closet, but that he has no closet.
Any guesses as to what Obama might try to use?