Conspiracy beliefs and democratic backsliding: Longitudinal effects of election conspiracy beliefs on criticism of democracy and support for authoritarianism during political contests

Abstract There are widespread concerns that conspiracy theories undermine democracies. But do conspiracy beliefs increase criticism of democracy and/or support for authoritarianism? Or are antidemocratic people more likely to endorse conspiracy beliefs? To answer these important questions, we collected longitudinal data during two concurrent democratic elections—the 2020 US Presidential Election ( N = 609) and the 2020 General Election in New Zealand ( N = 603). Random intercept cross‐lagged panel models tested whether conspiracy beliefs affect criticism of democracy in general, as well as support for authoritarianism, and both direct and representative democracy, specifically. There was little evidence that conspiracy beliefs temporally preceded changes in attitudes toward democracy or support for any specific form of government. Instead, people who supported authoritarianism more subsequently endorsed stronger conspiracy beliefs. The results suggested that, in the context of electoral contests (e.g., elections), antidemocratic people are more likely to endorse conspiracy beliefs rather than conspiracy beliefs fostering antidemocratic views.