>Serious question, if you don't learn to empathize with the White underclass they're gonna go full fash with a much scarier demagogue.
Most of Trump's supporters were petty-bouge/members of the national bouge. The White Underclass is pretty much being exterminated by drug overdose and other forms of death by despair.
Now, I agree with your point that we'll probably see a new party forming soon, or ascending to power. Both the Republicans and Democrats have tried to nip the populist instincts of their base in the bud, of which the Democrats were more successful
I've spoken to my own party about this several times, that the only way a third party gets off the ground is both by attacking the big two, as well as forming a broad coalition that steals certain factions away from the DNC and GOP respectively.
Whether this populist coalition could maintain itself is another question entirely, but that's how it will form. The far-right is pretty much toxic to most sectors of the American public, so what you're far more likely to see are paleocons, the occasional libertarian, and bizarre ideological fusions than out and out fascists.