Jan-Werner Müller is Roger Williams Straus Professor of Social Sciences and Professor of Politics at Princeton University. He works mainly in democratic theory and the history of modern political thought; he also has a research interest in the relationship between architecture and politics, as well as the normative implications of the current structural transformations of the public sphere. Publications include Contesting Democracy: Political Ideas in Twentieth-Century Europe (2011) and What is Populism? (2016). In 2021, Democracy Rules appeared with FSG, Penguin, and Suhrkamp.