Candidate Debates and Partisan Divisions Evidence From Malawi’s 2019 Presidential Elections

Candidate debates are increasingly organized during elections in democracies and electoral autocracies. How do debates impact partisan divisions and preferences in these contexts? One theoretical perspective suggests that debates should amplify these preferences and divisions, while another implies debates should attenuate them. This paper evaluates these expectations by studying presidential debates organized during Malawi’s May 2019 elections. With an experiment and national panel survey, the paper provides evidence consistent with attenuation: debate watchers were substantially more likely to vote across partisan lines (cross-party voting), became more favorable toward out-partisan candidates, and became less favorable toward co-partisans. Suggestive evidence on causal mechanisms shows that these effects were driven by policy persuasion and debates’ impact on perceptions of the candidates’ policies and qualities. Results advance debates about information processing, campaign effects, and voting behavior in new democracies and electoral autocracies, and have implications for electoral institutions’ impact on partisan divisions.