We use a field experiment to evaluate the impact of two informational get-out-the-vote (GOTV)campaigns to boost female electoral participation in Paraguay. We find that public rallies have noeffect either on registration or on voter turnout in the 2013 presidential elections. However,households that received door-to-door (D2D) treatment are 4.6 percentage points more likely tovote. Experimental variation on the intensity of the treatment at the locality level allows us toestimate spillover effects, which are present in localities that are geographically moreconcentrated, and thus may favor social interactions. Reinforcement effects to the already treatedpopulation are twice as large as diffusion to the untreated. Our results underscore the importanceof taking into account urbanization patterns when designing informational campaigns.