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Why Do People Vote? Genetic Variation In Political Participation
...“Although we are not the first to suggest a link between genes and political participation,” note the authors, “this study is the first attempt to test the idea empirically.” They do so by conducting three tests of the claim that part of the variation in political participation can be attributed to genetic factors.

The results suggest that individual genetic differences make up a large and significant portion of the variation in political participation, even after taking socialization and other environmental factors into account. They also suggest that, contrary to decades of conventional wisdom, family upbringing may have little or no effect on children’s future participatory behavior.

In conducting their study, the authors examine the turnout patterns of identical and non-identical twins—including 396 twins in Los Angeles County and 806 twins in the National Longitudinal Study of Adolescent Health. Their findings suggest that 53% of the variation in turnout can be accounted for by genetic effects in the former, with similar outcomes in the latter. Moreover, genetic-based differences extend to a broad class of acts of political participation, including donating to a campaign, contacting an official, running for office, and attending a rally. ...