The first thing the Republicans have to do is stop being delusional. Seriously, until they can actually deal with reality then they're just spinning their wheels.
Republicans were taken in by a bankrupted New York real estate hustler looking to pander to Russia and more specifically Putin for more loans and a Moscow hotel real estate deal. Howard Stern knows Trump well and he called that a long time ago. Trump was rude and utterly lacking in morals and grace yet the Republicans swooned over him because he made them feel like it was OK to be themselves. They finally were allowed out of the closet under Trump. That was the entirety of his appeal. They no longer had to hide their ugliness and pretend to have "Southern Charm" or be constrained by their pious "Family Values" they had locked themselves into playing. They had suffocated themselves and Trump came along and took the pillow off their faces.
Keeping up appearances wore on the rural would-be Trump voters. They were tired of being nice and polite in the facade they had created for themselves. So when Trump came along and offered them a way out of the prison they had created they jumped at it and never looked back.
Guess what, nobody believed the Southern manners act anyway so welcome to being human. Now get back to facts, logic, and reason as your guiding principles in life and you'll see once again how great that is. You might even make it "great again."