Trumpism is no more a thing than Justin Bieberism. It's a fad. 5 years ago there was no Trumpist majority in the GOP. What's enduring is the GOP formula of exploiting the racism/nationalism of rural/suburban Americans to provide political fuel for policies that benefit the rich.

That formula--populism in the service of corporatism--has been with us for ages, was reshaped for the modern age under Reagan and has driven both the widening economic and political divides in America ever since. It will long survive Trump.

Trump weaponized it-fanning the flames of social division so that he could do even morefor a smaller & smaller percentage of the population. The reality was, he has not be very good at it. While he has GOP support, his popularity in polls has lagged all other recent presidents.

At the same time, growing recognition of shifting demographics in the US and the advent of social media have created new opportunities for the most extreme members of the GOP coalition to unite, mobilize and increase their voice.

That isn't just bad for the US. It's a problem for the GOP, particularly in terms of national elections. (The GOP has won the popular vote only once in the past eight presidential elections. While they benefit from electoral college advantages, this is a terrible trend for them.)