The personality of a personality cult? Personality characteristics of Donald Trump's most loyal supporters

The unusually loyal supporters of Donald Trump are often described as a cult. How can we understand this extreme phenomenon in U.S. politics? We develop theoretical expectations and use the Big Five personality dimensions to investigate whether Trump's most loyal supporters share personality characteristics that might make them inclined to cult-like support. We find that (1) Trump's supporters share high levels of Conscientiousness; (2) this is substantively and statistically distinguishable from the commonly identified association between Conscientiousness and Conservatism; and (3) the association is highly robust to a range of sensitivity tests. Our main findings are robust across two surveys. Study 1 is an online survey conducted in 2021 designed specifically for this project. Study 2 is the 2016 American National Election Study (ANES).