Comment by thechao

Republicans can't vote against Trump, because the vast majority of Congressional districts are gerrymandered; this means the candidate can be easily outprimaried with just a little bit of cash. The original red map project (2010) cost about 40 million; the last map (2020) was quite a bit more expensive — perhaps 10x as much — but still quite cheap considering the benefit (functional control of the U.S. government). One of the unintended effects of the deep 2010 gerrymanders that project red map discovered was that it also distorts the Senate map (this was unknown effect, at the time). Until gerrymandering is fixed, and the legislative powers ceded to the executive are clawed back, there is no "fixing" the current situation. It was always just a waiting game for a well-heeled (for primaries) autocratically-leaning president to come along.