Fuck his base. If they lose Trump's base, they lose. If they retain Trump's base , they lose.It’s clear they want to get rid of them, but they are afraid of his base. Behind the scenes, they are doing everything they can to get rid of him, but they are scared to do anything publicly.
Pubs are just better off without him. The sooner the better.
If his base doesn't like it they can form a third party.