Partisan losers' effects: Perceptions of electoral integrity in Mexico

We examine the partisan, logistic, and contextual factors affecting citizens' perceptions of electoral integrity. Drawing on original survey data collected at different stages of the 2012 Mexican presidential election, we find that confidence in the integrity of the electoral process varies not only over time, but also across partisanship. While those who supported the candidate on the left consistently expressed concerns about electoral corruption, supporters of the incumbent party discredited the integrity of the election only after learning their candidate's defeat. Furthermore, we provide the first empirical assessment of the relationship between voters' perceptions of electoral integrity and the presence of observers and party representatives at the polling station. Our findings contribute to a better understanding of the political factors that influence citizens' trust in elections.