What explains election turnout in authoritarian regimes? Despite the significant energy, resources, and time ruling parties devote to improving the participation rates of citizens, there exists extraordinary variation both within and across authoritarian regimes. This paper hypothesizes that election turnout is explained by contestation, coercion and clientelism. To test this theory, the paper uses an original dataset capturing turnout rates for 548 legislative elections in 108 countries between 1960 and 2011. The resulting empirical analysis confirms these Hypothesis – with one notable exception. Instead of encouraging turnout amongst citizens, clientelism discourages it. This counterintuitive finding occurs because citizens lack the optimum incentives for participation and ruling parties lack effective monitoring strategies of that behavior. The conclusion of the paper addresses its implications for existing theories of authoritarian politics and proposes several avenues for further research on election turnout under authoritarianism.