With the GOP acting the way it does and being against good conservative values and principles, I can't see why any one would want to be part of that.
In fairness, the GOP has had some conservatives who are worth their paycheck, but they have been hobbled by the "moderates" (read: "Liberal Republicans"). Unfortunately, there are more of the latter than we knew, and the ACA issue has exposed them like turning over a flat rock. I just wish we had had an honest roll call vote from them, instead of the usual suspects (McCain, Collins, Graham, Murkowski, to name four) popping up with enough votes to kill conservative measures and letting the rest stay in cover. It will take a while to weed them out.