If I could bet money, I'd bet that the GOP falls in line lock-step behind Trump if he grabs it, outside of a handful of Conservative thinkers in the media. And the scant few that refrain will be outnumbered by the number of new energized voters he adds to the rolls. And I think that the problem is that there simply aren't many die hard movement conservatives in existence. I'm talking the philosophy of conservatism here. The GOP has spent so many years courting angry social conservatives (I consider a different beast entirely), and a general anger and hostility at all things government in any way shape or form that the voters they actually have in the greatest numbers aren't actually aligned (in the aggregate) with serious conservative intellectual thought. It's more nihilistic and xenophobic than principled and considered.