Let the people’s will prevail: Self-uncertainty and authoritarianism predict support for populism

Recent years have witnessed a widespread rise of right-wing populism—an ideology maintaining that the will of the people is supreme, but is subverted by antagonistic elites. Drawing on uncertainty-identity theory, three studies (total N = 5,882) tested the hypothesis that uncertainty would only strengthen support for populism among low authoritarian respondents. Studies 1 and 2 were secondary analyses of American National Election Survey (ANES) 2012 and 2016 data. They supported our key hypotheses in explaining support for the populist American Tea Party (Study 1, N = 1,917), and support for right-wing populist ideology and voting preference for Donald Trump rather than Hillary Clinton (Study 2, N = 2,520). Study 3 ( N = 1,445) experimentally manipulated self-uncertainty to allow a causal interpretation, and focused on right-wing populist ideology. The results are discussed in terms of their contribution to uncertainty-identity theory, and their societal relevance in an environment of growing populism.