We provide evidence of a causal effect of anticipated election closeness on voter turnout, exploiting the precise day-level timing of the release of Swiss national poll results for high-stakes federal referenda, and a novel dataset on daily mail-in voting for the canton of Geneva. Using an event...

Models of voting, including the canonical rational voter model, predict that voters are more likely to turn out when they anticipate a closer election. Yet, evidence of a causal effect of anticipated election closeness on voter turnout is limited. We exploit naturally occurring variation in the...