If Trump loses, who represents his "movement" going into 2020?

[Mr. Morden]

What is the "movement"?  Trump is no different from plenty of other Republicans on the right flank of the party on immigration.  It's just that he uses more provocative language than most of them do when he talks about it.  There'll be plenty of Republican candidates in 2020 who are "Trumpist" on immigration.

Where Trump deviates more from GOP orthodoxy is on foreign policy and (especially) on trade.  Will there be candidates who follow the Trump line on these issues running for the Republican nomination in 2020?  I don't know.  Who is even doing this on the statewide level this year?  It seems like even most of the enthusiastic Trump supporters, like Chris Christie (or even Pence for that matter), don't actually agree with him on these issues.  There are plenty of Republican politicians who support Trump, but few who've actually adopted a Trumpist policy platform in the areas where he deviates from the old party line.