quadraginta
Becoming Beth
Sure. But I tend to look at Trump as a unique, one-off kind of guy. I don't really see him remaking the party in his image. He'll probably get a couple of challengers in 2020 (Kasich, for example), but I suspect they will discover that it is very hard to defeat a sitting president in the primaries. Reagan came close to doing it against Ford in 1976. Johnson in 1968 could have won the nomination; note that his designated successor, Humphrey, got the nod from the party despite not winning a single primary.
I don't give him credit for doing it personally, but judging by the Republican primaries since he took office I think it is fair to say that the Republican party is remaking itself in his image.