As an outsider to America, it looks like there's a moderate center-right party, and a batshitinsane far-right crazy party, and logically very few people between them, because either you believe obviously stupid delusional claims, or you don't.
Three-quarters of one side believe that the last election was stolen, despite the huge amount of evidence to the contrary. Very many of them believe that the climate emergency is a Chinese hoax, that Obama is a Muslim from Kenya, that his wife is trans.
Why would there be any middle ground now, when one side has taken leave of their senses?