Communicating Republicans’ Level of Support for Climate Policy Briefly Increases Personal Support in the United States

Americans systematically underestimate the popularity of climate policy. Researchers have speculated that correcting second-order misperceptions, or beliefs about what others believe, could translate into even broader support as action comes to be seen as more politically feasible. Using a two-wave experiment ( N≈1,600), we examine the effects of communicating the degree of policy support among Democrats, Republicans, or all Americans (i.e., norms). Republican and American norms increase perceived policy support from the relevant group; exposure to the Republican norm also increases policy support, and this effect is concentrated mostly among fellow Republicans. However, this effect does not persist over time.