[FuriouslyAdrift]

Because they can. Right now they can't. If you think the R party is going along with Trump because of ideological alignment, you'd be wrong. There are very few members that are aligned with him.

The current situation is of political survival. Nothing more.

[AnimalMuppet]

They're going along with him because of political blackmail. Some agree with him, but some know that if they cross him, he's going to have them primaried, and his odds are good at getting rid of them.

But I don't see how more Rs is going to make it less a matter of political survival to back him. He'll still have them primaried if they don't fall in line.