Most that feel disenfranchised from the Rs are not Socially Conservative. Those who are feel just fine and haven't left. This, of course, is if you are right. If you were right there'd be fewer Rs than you think.Right now the American libretarian party is full of disenfranchised Republicans. they bring their attitudes with them, regardless of what their platform says.
I honestly think the LP is filled up with ideologues who are unrealistic. That the R Party holds more people like me than they ever want to admit.