“I readily admit that he is the presumptive nominee. “
Far from it. It’s wide open, as far as I can tell. Sarah can have the nomination, IF she comes out as a conservative. But right now, her libertarian streak is showing a bit loud. If a well-respected Republican (like Demint) shows up, then anything can happen, again.
The libertarian streak will only help her. We’ll see how Rand Paul does in the Kentucky Senate race yes? He’s leading in the polls so far.