Your Vote is (no) Secret! How Low Voter Density Harms Voter Anonymity and Biases Elections in Italy

The density of voters in polling regions limits the secrecy of voting and can affect the outcome of Italian elections, with the same impact on countries with a similar voting mechanism. In the first study to analyze the link between voter density and election bias, authors Mauro Caselli (University of Trento) and Paolo Falco (University of Copenhagen) examined all municipal elections conducted in Italy from 1989 to 2015. They found that lower voter density significantly increases the probability of re-election for an incumbent in a municipal office, while in areas with a higher number of voters the probability of re-election for an incumbent falls.