Sen. Lindsey Graham to 'Re-Evaluate' Supporting Donald Trump If Nominated

The South Carolina Republican talks to “GMA” about battle over Scalia’s seat.

"That's something that really only comes from the kook part of America," he said, adding that Trump's reference to George W. Bush as a liar and his administration as the cause of 9/11 is "Michael Moore stuff."

Also, when asked whether Jeb Bush can win South Carolina amid Trump's spiking, Graham said, "Jeb is definitely surging; Donald Trump will not win the nomination.”

"I don't know how that plays out. There's two things going on at the same time. It's very rare that you get a nomination and a selection in the same year. I don't think that's happened very much," Graham said.