McCain victory via Obama voter assumption?

I'm getting this in before the election: Could John McCain win via the assumptions of Obama voters that Obama had it in the bag anyway? That's the problem with the press coverage of Obama's lead in the polls in recent days; that it's giving this impression that Obama's going to win, and win big. I got this impression from discussions with others. The J-Mac supporters are as determined as ever to vote, while the Obama voters are telling them that they'd be wasting their time. I think it's a good possibility that J-Mac could pull this out via Obama voter assumption - at least a 60% chance of happening, maybe as high as 65%. We'll see tomorrow.