I think there's a good chance the whole "MAGA" movement dies out in a few elections if Trump loses this round. It's not particularly popular in my area at least, and "MAGA" candidates have consistently lost the nomination for local elections because people are tired of all the BS (Trump will still win my state though because of the R). If he loses, I think it'll peter out a bit unless someone with Trump's charisma gets the nomination in 2028.