揭露党派性：极化削弱公众对集体风险的应对

Political polarization may undermine public policy response to collective risk, especially in periods of crisis when political actors have incentives to manipulate public perceptions. We study these dynamics in the U.S., focusing on how partisanship has influenced the use of face masks to stem the spread of COVID-19. Using a variety of approaches, we find partisanship is the single most important predictor of mask use and local policy interventions do not offset this relationship.