Actually the Dems were abandoned by the working class, not the other way around. The Dems had championed the working class for decades and the working class went for Reagan anyway, even though Reagan’s policies explicitly damaged the working class. After the 1980, 84, and 88 elections, Clinton, Gore, and the Southern Leadership Council said, “Screw it” and dragged the Dem Party hard to the right, dumping the working class vote in favor of the upper middle class vote and started winning elections again. So for three decades we’ve had a center right party, the Dems, and a far right/fascist party, the Reps. The Rep rebranding following the 2008 defeat was pure genius, convincing the working poor that radical right policies would magically benefit them.