I suspect lots of people would become very disillusioned and the election would probably have the lowest voter turnout of all time. The establishment would try to go on as if everything was normal, but we would probably be a lot closer to an unofficial (or official) break up of the country.

If, on the other hand, Trump is elected it may unfortunately keep more people hopeful & engaged than might otherwise be the case. The right is stupid, but not actually unhinged, the way the left has demonstrated they are...

Shit... They're probably going to shoot Biden next.