Source (the article I linked)
Anywho, I think I've stated my thoughts on this so I don't have much more to add, other to summarize: Current trends do show a shift of affluent and white college grads towards Democrats (relative to past levels of support), but that over the long run those trends will likely reverse to some degree whenever the Democrats are able to actually implement their economic ideas, which almost definitely will involve substantial tax increases on higher-income citizens. At that point, I expect partisan allegiances to begin re-sorting themselves to the way common sense might dictate. My main point was to say that this will take a long time to unfold, as such macro-scale trends usually do.
For now, though, there is simply more pressure on these voters to shift away from Republicans, as the economic disincentives these voters might have against voting for Democrats is basically just theory, as Democrats have not had real power to implement their ideas for a long time, and the brief window they did have it in, the party composition was simply not such that would actively want to jack up taxes significantly on those voters.
Basically, the wealth inversion that builds up the next Democratic Party will collapse as soon as it implements its policies, but the policies might win back old voters, especially if Republicans suceed in pushing the SCOTUS so far to the right, that a lot of one party voters will get lazy and complacent as they get personhood lays passed in the frontier and bible belt, even if nowhere else.
