What Affects Voter Turnout? A Review Article/Meta-Analysis of Aggregate Research

For more than 40 years, studies trying to explain macro-level electoral turnout have been one of the pillars of political behavioural research. From January 2004 to December 2013 alone, more than 130 articles were published in peer-reviewed journals using turnout at the national, regional or local level as the dependent variable. This meta-analysis tries to synthesize the results of these studies. I find there is a strong consensus in the literature that turnout is higher under compulsory voting, if the election is important, and if it is held in a small country. I also find that the influence of most other predictor variables, including the type of electoral system, the number of parties, development, income inequalities and electoral closeness is inconclusive at best. These results hint at the fact that the determinants of turnout might be more complex than the current theory suggests and is rather more context dependent.