Really pleased to see McCain making such a comeback. I still don't think he can win the nomination, but he'd be a great nominee for the party. Polls show he would carry the swing vote quite well. Current head-to-head projections show he could defeat Hillary and maybe Obama, although the latter margin is smaller. He's the only Republican that leads against the Democrats in head-to-head projections. I just don't understand why the Republican establishment seems so set against him.
You can see all the head-to-head projections at RealClearPolitics.