Who knows how it works. But, in order to invoke the constitutional option, the Republicans will need 50 votes. That means out of the gang of 7, they need 2. I know Graham has learned his lesson, but I have to wonder whether the others have. We shall see, but my bet is that McCain will cave faster than he can run to a microphone.
If McCain really wants to run for President (as a Republican) he can't oppose this nomination. In the end, he'll be on board.
DeWine is up for reelection next year and I hear that it's RINO hunting season in Ohio. I think DeWine will be on board. There are the two.