Currently on InTrade:
13 EV Virginia is a 48.5%
20 EV Ohio is at 47.0%
9 EV Colorado is at 45.0%
McCain is currently at 232 EV.
If McCain keeps the states he has, plus wins the three above states, he gets:
232 EV + 13 EV + 20 EV + 9 EV = 274 EV
It obviously could still go either way, but I think McCain is in as good a shape as could reasonably be hoped for right now.