More augurie as it relates to class, income and edjumication. Some in opposition to Ferguson's observations:

"OK, this may come as a surprise. Trumps vote share increased between 2016 and 2020 in 2,252 or 72.4 percent of the 3,110 US counties for which we have data. On average, he gained 1.41 percent in vote share by county. Weighted by population, of course, he lost 0.97 percent on average. But still, incredibly, there was a swing towards the GOP in nearly three-quarters of US counties. "

Class-Partisan Polarization Intensified in the 2020 Cycle

It's all still early and there's more spilling of guts to be done.