If Trump regains the White House and the GOP maintains a majority in Congress we will have a lot longer than 4 yrs to deal with him. I seriously doubt that he will ever allow the democratic process to oust him again, and he will have a lot more support as President than he has now.
Sadly, our answer to his obvious desire to be a dictator for life is a totally uninspiring and possibly senile Biden who would have been, at best, a moderate Republican in any previous era since Eisenhower. The DNC has appointed itself as gatekeeper to the left flank of the party to ensure no progressive policies, even those with wide general approval, see the light of day politically.