How Affective Polarization Undermines Support for Democratic Norms

Does affective polarization - the tendency to view opposing partisans negatively and co-partisans positively - undermine support for democratic norms? We argue that it does, through two mechanisms. First, in an age of elite polarization, norms have been politicized. This leads affectively polarized partisans to oppose particular constitutional protections when their party is in power but support them when their party is out of power, via a cue-taking mechanism. Second, affective polarization may generate biases that motivate voters to restrict the other party's rights. Using nationally representative surveys, we find strong support for the cue-taking argument. In 2019, with a Republican administration in power, affectively polarized Republicans opposed constitutional protections while affectively polarized Democrats supported them. The reverse was true in 2012 during a Democratic administration. The findings have important, albeit troubling, implications for American democracy, as affective polarization undermines support for basic democratic principles.