TY - RPRT AU - Mattozzi, Andrea AU - Nocito, Samuel AU - Sobbrio, Francesco TI - Fact-Checking Politicians PY - 2026/Apr/ PB - Institute of Labor Economics (IZA) CY - Bonn T2 - IZA Discussion Paper IS - 18534 UR - https://www.iza.org/index.php/publications/dp18534 AB - We study how politicians respond to the fact-checking of their public statements. Our research design employs a difference-in-differences approach, complemented by a randomized field intervention conducted in collaboration with a leading fact-checking organization. We find that fact-checking discourages politicians from making factually incorrect statements, with effects lasting several weeks. At the same time, we show that fact-checking neither increases nor displaces correct statements. Politicians who are fact-checked tend to substitute incorrect statements with either no statements or unverifiable ones, suggesting that they may also respond by increasing the “ambiguity” of their language to avoid public scrutiny. KW - fact-checking KW - politicians KW - accountability KW - verifiability ER -