The question posed here is After Trump. My question to this question is, when After Trump?
The reason I write this is because my guess is he's going to quit. His ego would not let him face defeat at the polls so he's going to drop out. My guess here is that will probably happen sometime after Labor Day or mid-September. He'll claim the election is rigged, that the media is all against him, that there'll be fraud at the polls, et cetera, et cetera.
So the question then is what happens next? I was just reading that The Republican National Committee's 168 members will pick a new nominee. Who will that be? Would it be Mike Pence, the VP candidate? Would any of the primary candidates come back and jump in, like say Ted Cruz (who would claim he got the second most number of primary votes)? I would bet there will be a lot of people who would want Paul Ryan to step in. No matter who is chosen, and especially if Ryan, Hillary will be in a whole new game.
If Trump does stay in and the polls look like Hillary is going to win in a landslide, what I fear is there will be a record low voter turnout. Usually when there's a low turnout Democrats do very poorly, which means Republicans would hold onto the Senate and the House. And thus we citizens then would be the losers due to at least 2 more years of Republican obstructionism.
As for 2020, assuming Hillary wins, I'm sure Cruz and Rubio will be back battling each other for the nomination.