全球变化知识资源中心

What factors influence agenda setting behavior in state legislatures in the United States? Using the localized effects of climate change, we examine whether notable changes in temperature can raise the salience of the issue, thus encouraging a legislative response. To evaluate the behavior of individual legislators around climate policy, we utilize an original data set that includes geographic mapping of climate anomalies at the state legislative district level and incorporates individual, chamber, district, and state characteristics to predict climate bill sponsorship. Using a multilevel model that estimates climate change bill sponsorship among 25,000 legislators from 2011 to 2015, we find a robust relationship between temperature anomalies and bill sponsorship for Democratic members of state legislators while Republicans are unresponsive to such factors. Our data and methodological approach allow us to examine legislative action on climate change beyond final policy passage and offers an opportunity to understand the motivations behind climate innovation in the American states.