Bottom line here is that the Repub party is surviving on pumping fear and hate into their members. This is their call for unity as a political party. It's not about providing their working class members (of whom provide the bulk of their voters) a better chance at improving their quality of lives through various federal programs because that's what the Democrats are always attempting to do for them while their own "conservative" leaders are always attempting to deny their own members these things.
No matter how ridiculous it sounds, the GOP leadership has convinced their rank and file that being gun toting racists, supremacists, isolationists, traditionalists and nationalists is a much better way to live their lives in lieu of acquiring affordable health care, affordable college tuition, well maintained infrastructure, etc. for themselves.
Crazy is as crazy does, and the only road they've paved for themselves goes down a hole that drives them crazier.