It's far more likely that Trump will prove to be the Carter of the Republican party; inexperienced outsider who wins narrowly (with a coalition of states unusual for his party in recent elections), who while having large congressional majorities, has different priorities that leads to not much getting done, and then gets trounced four years later, whose election is then regarded in the history books as a circumstantial aberration during a period of White House control for the opposite party.
Actually, extending the metaphor...
Trump = Carter
Obama = Nixon/Ford
Bush = LBJ/Kennedy (Iraq = Vietnam, 9/11 = Cuba)
Clinton = Eisenhower
Bush = Truman
Reagan = FDR (cringe, but they were both radicals at their respective times, so...)
So we don't need to worry. If history holds true, after Trump, we get our own new FDR!
[/#analysis]