The Study of Independent Voters

More Americans identify as Independent than as Republican or Democrat. Who are Independents and how do they impact American politics? This question does not have a clear-cut answer. On the one hand, American Independents are pursued by media and politicians for their (perceived) nonpartisan behavior and their ability to swing elections. On the other hand, Independents are ignored for their low political engagement and dismissed as “closet partisans.” As a result, many analyses of American voters either remove Independents entirely or combine leaners—those Independents who admit feeling closer toward one party or the other—with weak partisans. This puts Independents and the researchers who study them in a strange position as we attempt to understand the role of Independent voters in American politics. The debate about whether Independent leaners are truly independent or whether they are “closet partisans” dominates the literature, but a thorough review of the evidence reveals many interesting findings and generates many interesting research questions surrounding the motivations for an Independent identity and its consequences. We address the who, how, why, and where of Independent voters: Who Are Independents? discusses Measurement of Party Identity and Independence, Partisan Dealignment, and Demographics of Independent Voters; How Do Independents Behave? discusses Voting, Political Interest and Engagement, and Implicit Attitudes and Intergroup Bias; Why Identify As Independent? discusses intrapersonal and interpersonal motivations for identifying as Independent; and Where Do We Go From Here? suggests common practices for researchers to enhance the study of Independent voters.