I think it's about time that people stop saying that "so and so" can't win. I think there are about 4 people at this point that could win the election in November, all things considered. And that doesn't include a 3rd party candidate - however, I think it's getting late in the game for that to gain a stronghold.
So far, we have seen all of the supposed Final Four written off by various people in here, and elsewhere.
Clinton can't win because she's a woman, because her name is Clinton, because she's a bi*ch, etc.
Obama can't win because he's black, because he has no experience, etc.
Romney can't win because he's a mormon, because he's a multiple loser from a northeastern state, because he's from big business, etc.
McCain can't win because he's too liberal, too old, too wild-cardish, etc.
Looks like one of them probably will win, to me. So there are a lot of people who will be proven wrong from the "can't win" crowd.