Never say never, but while Howard Dean is getting no respect for his vision, have a look at the fact that Obama didn't win the evangelical vote in any state, including his home state.
You could say he has a lot to win.
On the other hand, you could say he's got nothing to lose by not trying ... some of these figures break down 90/10 against, with McCain -John Sidney McCain, III - as the GOP candidate, for pity's sake, running on the heels of a torture-President.
(courtesy Christianity Today, using CCN exits - click on a state to get the breakdown)