Now, I'm not God, and can't tell the future, but this is the way it currently seems to me:
The Magic One is currently on the defensive; he's got nothing good to show on his record, and is going to have to struggle to keep those who voted for him in 2008, in line. He could hold what he got then, but he's not going to conquer any new ground.
The states that voted red in 2008 are going to vote red in 2012, no matter who the Republican candidate is.
So to me, that's the way it seems to stand right now; the Magic One's in no position to pick up any 2008 red states, only to hold onto what he got back then, at the most. The question is, which of the 2008 blue states are going to be red in 2012?