Politicians’ misinformation, its correction, and partisanship in Italy

Political misinformation represents a challenge to contemporary democracies. It is widely acknowledged that misinformation is not only spread by individual users on social media, but also by politicians employing both digital and legacy media to disseminate biased or misleading content to advance their political agendas. This study explores the mechanisms through which misinformed statements made by politicians influence public opinion and examines the effectiveness of corrections from academic/official sources or fact-checking websites, also focusing on the role of partisanship. We investigate whether agreement with a misinformed statement on key policy issues – minimum wage, COVID-19 vaccination, and working hours – increases when it is attributed to a politician, and whether corrections by academic/official sources or fact-checkers reduce agreement. Through survey experiments conducted in Italy, we find that while misinformation from politicians does not always affect agreement with false statements, corrections generally decrease agreement. However, partisanship plays a crucial role, with individuals more likely to resist correction when misinformation comes from politicians they have more positive feelings toward. These findings shed light on the complex relationship between misinformation, the effectiveness of corrective messages, and political identity in shaping public opinion.