Is there a real difference? Will those who say "I voted Democrat because Trump" have significantly more influence in a post-Trump Republican party than those who say "I left the party because Trump"? Those are basically the same. How much are you "in" a party you don't vote for?https://twitter.com/RadioFreeTom/status/1009465322271858690 …
I separate policy disagreements (e.g. corporations, guns) from fundamental threats to the American system (truth, rule of law, human rights), and think the Republican party could return to the realm of policy disagreement. But not without bad electoral losses first.