"And who determines who the "real Republicans" are anyways?"
I think that is done when they create the party platform.
It lets people know what "Real" Republicans stand for.
Oh, ok so you think that a few party leaders along with the current nominee should determine the definition of a "real" Republican and that no one can disagree at all, even if only on one issue, with them if they want to be a "real" Republican. And the definition changes every four years. I see.