I think it is highly likely that Trump will lose, but that a Republican will defeat Hillary in 2020. But, would it even matter by then? With four years of Hillary, we would, quite possibly, have a majority of young, far-left, liberals on the Supreme Court that would be able to find some excuse to strike down every conservative law.
This is very doubtful.
I have this pit in my stomach that we will elect an incredible president in 2020, but that he or she will not be able to make conservative policy changes, despite a conservative Congress, because the Supreme Court will strike everything down.
I have this pit in my stomach that 2020 will be a replay of 2016.
Basically it takes 16 years for the GOP to figure out how to get a respectable candidate to run for POTUS?
McCain was respectable and so was Romney