Personality and political preferences -2 Why do individuals differ in their political preferences? Answers to this question have often focused on the social contexts individuals find themselves living in. At the broadest level, people are assumed to adopt positions that reflect the interests, identity, or values of the groups they belong to (Mason, 2018) and to shift their beliefs in response to situations (e.g., recession or growing inequality) that arise at particular times. Political preferences are also generally thought to be learned in the context of various social relationships. One example of this is the tendency for people to acquire the political identities and preferences held by their parents (Jennings & Niemi, 1991;Sears & Levy, 2003) or others in their social networks (Huckfeldt, Johnson, & Sprague, 2004;Newcomb, 1943). In the study of mass belief systems, an even more important example is the phenomenon of top-down 'elite opinion leadership' in which citizens who identify with particular parties or ideologies adopt the sets of beliefs and issue attitudes modeled by leaders who share their partisan and/or ideological affiliations (Converse, 1964;McClosky & Zaller, 1984;Zaller, 1992; see also Abramowitz, 2010;Levendusky, 2009).Recently, researchers have pointed toward a different answer: the bottom-up consequences of personality differences. A burgeoning literature suggests that individual differences in psychological traits, needs, and motives reliably predict variance in political preferences (e.g.,