Not sure why I didn't think of it earlier, too busy being baffled I guess: Trump and the authoritarian voter (http://www.vox.com/2016/2/23/11099644/trump-support-authoritarianism)
QuoteWhat I found is a trend that has been widely overlooked. A voter's gender, education, age, ideology, party identification, income, and race simply had no statistical bearing on whether someone supported Trump. Neither, despite predictions to the contrary, did evangelicalism.
Here is what did: authoritarianism, by which I mean Americans' inclination to authoritarian behavior. When political scientists use the term authoritarianism, we are not talking about dictatorships but about a worldview. People who score high on the authoritarian scale value conformity and order, protect social norms, and are wary of outsiders. And when authoritarians feel threatened, they support aggressive leaders and policies.