Both parties have factions that have not always been associated with that party. The religious types used to vote Democratic, at least in the South, Reagan basically switched that. Using broad strokes, those folks vote on social issues. Republicans also include business types who want less regulation of stuff, and higher income earners who like lower taxes (who doesn't?), and elderly folks who tend to be more conservative, liking how things were, not how they may seem to be on the news.
Democrats also have factions of course.
I also wonder if Trump has the mental capacity to be President, really, I do, and frankly I don't think he does, nor is he, in my view, able to "work in DC". He really didn't get much done in his first term, I don't expect much in his second. If we can avoid major military conflict, I am more or less "OK".
As for Joe, I didn't think he was very smart 30 years ago. He thinks he is, which makes it doubly bad, though today I think he's a prop.