I am beginning to increasingly think that you can't appeal to them. Obama's presidency made white people crazier about race than they previously were, and more openly crazy at that.
But setting aside your point (and I'm not against trying to appeal to them as well, though I think the better strategy is to energize the 35% of white voters that you do have and all of your minority voters to come out and vote), I was just pointing out that saying that the WWC drove the election doesn't hold up. Why not say that white women drove the election? White men? White college-educated voters? They're all large subsets of white voters?
This is my issue with the "appeal to WWC" approach. They're still white, and whiteness means more to them than anything else any pol can offer. White people in general, across educational, gender, and class lines, voted for Trump.