The Democrats have become elite socialists and Trump Republicans are nationalist-populists. From Victor Davis Hanson at The Epoch Times via zerohedge.com:
Our two parties have both changed, and that explains why one will win, and one lose in the midterm elections.
The old Democrats have faded away after being overwhelmed by radicals and socialists.
Moderates who once embraced former President Bill Clinton’s opportunistic “third way” are now either irrelevant or nonexistent.
Once considered too wacky and socialist to be taken seriously, Senator Bernie Sanders (I-Vt.), the performance-art “squad,” the radicals of the Congressional Black Caucus, and Senator Elizabeth Warren (D-Mass.), and her hard progressive wing are today’s Democratic Party kingpins.
The alienating radicals of Antifa and Black Lives Matter often serve as the new party’s shock troops on the streets. They opportunistically appear to push the party to embrace no-bail laws, defunding the police, and the destruction of the fossil fuel industry.
Since none of those positions poll even close to 50 percent with the public, the Democrats routinely either slur their opponents as racists, nativists, and climate denialists or obsess on another Trump psychodrama distraction from the Russia collusion hoax to the Mar-a-Lago raid.
What “blue dog” centrists are left in the Democratic Party either keep mum or, like Tulsi Gabbard, flee in disgust.
Former President Donald Trump also recalibrated the Republican Party and helped to turn it into a nationalist-populist movement that would rather win rudely than lose politely. The MAGA agenda pushed Jacksonian deterrence rather than unpopular nation-building abroad. It finally focused on fair rather than just free trade. Republicans now unite in demanding only legal immigration and promoting domestic investment rather than globalist outsourcing and offshoring.
In response, many of the old Bush-Romney country-club wing left in disgust. Others licked their wounds as fanatical NeverTrump something or others.
Both parties have also been radically changed by additional issues of class, race, and wealth.
Compare the income profiles of voters, whether by ZIP codes or congressional districts. A once lunch-bucket carrying, union member Democratic Party has become the enclave of three key constituencies.