I could easily see the Christian conservatives break off and form a new 3rd party. The new GOP is nothing like the old guard GOP of the 1980s-2000s.
Those "Christians" don't give a damn about their religion. They hate universal healthcare and support the death penalty. How Christian. They overwhelmingly supported Trump because he and those stooges you listed represent what they really want which is a whiter country.
Capital punishment and personal responsibility (as, of course, is compassion) are both in the Bible, but okay.
Personal responsibility for one's general station in life and for the consequences of one's sins=/=personal responsibility to be or become rich enough that you can come up with the money for medical procedures that cost thousands of dollars a pop or else you'll die in a heap.