I keep reading comments from people who cannot grasp how he became popular, so I keep flogging this article: What Donald Trump, Vladimir Putin and Viktor Orbán Understand About Your Brain It’s not precisely on-point, but it’s the only one I’ve seen in the popular media to even start to address the issue.

TL;DR: It’s not a conscious, rational decision to support him. It’s a hijacking of the fight-or-flight reaction to fear and resist facts.