Social Capital and Voter Turnout: Evidence from Saint's Day Fiestas in Mexico

Social capital and community activity are thought to increase voter turnout, but reverse causation and omitted variables may bias the results of previous studies. This article exploits saint's day fiestas in Mexico as a natural experiment to test this causal relationship. Saint's day fiestas provide temporary but large shocks to the connectedness and trust within a community, and the timing of these fiestas is quasi-random. For both cross-municipality and within-municipality estimates, saint's day fiestas occurring near an election decrease turnout by 2.5 to 3.5 percentage points. So community activities that generate social capital can inhibit political participation. These findings may give pause to scholars and policy makers who assume that such community activity and social capital will improve the performance of democracy.