You're exacly describing material forces. The various positions individuals adopted toward identity politics did not grow out of a vacuum. Their place of birth, the environments they were raised in, their socio-economic classes... Everything shaped them to make the choice they made last november. The profund discontent that was exploited by the GOP last election stems from ever-increasing socio-economical disparities among the population. This can and has been measured.

On a side note, funny that this group that supposedly defines themselves by their opposition to coastal elites rallied themselves behind... Trump, a prime example of the east coast elite.