This article by Henry Banta is as good a summary of the state of the GOP as I’ve seen in a long time.
I would only add that I suspect there are plenty of heavy-hitting contributors to the party for whom this is less ideology than a trojan horse for a plutocratic power-grab. These people are perfectly happy to contribute to deceptive party messaging that conflates middle class economic anxiety with “culture wars” (i.e., racism, misogyny, homophobia)
Homophobia trumps national security; anti-abortion concerns trump economic justice; etc.