The dual economy, climate change, and the polarization of American politics

This article explores two questions. What generates the political division over climate change policy in the United States? How is the division over climate change policy related to the broader polarization of contemporary American politics? I argue that the geographies of America’s dual economy—the knowledge economy and the carbon economy—and exposure to the climate crisis intersect to generate a new axis of conflict, which I call the carbon–climate cleavage. This cleavage produces political division over climate change and provides materialist elements that accompany the sociocultural factors that shape contemporary polarization. I demonstrate the existence of the cleavage and its impact using data on economic geography, political attitudes on climate change policy, and support for Trump in the 2016 and 2020 presidential elections. The empirical analysis indicates that carbon economy communities oppose climate change policy and support Trump, while knowledge economy residents support climate change policy and oppose Trump.