I am not even sure it’s a swap. I see a lot of RW sentiment lately that libertarian principles are self-defeating, and the only thing that matters is Straussian friend-enemy distinction.

Basically, the extreme wings of both parties are seizing power and preparing for battle, while the moderate wings are tuning out. (Or to put it another way, more of the center is becoming politically independent.)

Traditional ideological lines break down under these conditions, because the important thing is damaging your enemies, not maintaining ideological consistency.