You can make a strong case that this is exactly what’s happened - Republican voters have replaced the conservative half of the US duopoly with far right extremists. What remains of the old Republican party hasn’t quite gotten the message that it’s been eaten from the inside out by something younger, dumber, and meaner than itself; it lies where it fell - moribund and bleating little noises of protest while the parasitic wasps that hollowed it out boil incoherently around it and light the whole joint on fire.
