With McCain in the WH, he won’t be in the Senate. That’s worth one vote right there. No GOPer is going to vote for this because McCain tells him to. Either they are or they aren’t. I think that the Dems would practically be unanimous on it, though, if Obama told them to vote for it. And he’s got the majority—enough to push it thru.
Again, the battle will be fought in the House. It will be easier to fight with Obama in the WH. Believe it or not.