College educated voters are more likely to vote in midterms then WWC voters, which helps Democrats. Minority voters voting at lower numbers does hurt Democrats. The midterm dynamic used to benefit Republicans but with the education divide starting, both sides have downsides.
This is true, but the areas of the nation where college whites are firmly dem now are areas that are already safe dem
In the swing districts of Atlanta, Texas, etc, college whites are still much more open to the GOP.
Whites with a degree are not a monolithic group interstate-wise