"This is an exceptionally intelligent book about a notoriously slippery, yet essential, political concept. Jan-Werner Müller's sweeping critique of populism will both instruct and challenge anyone who seeks to understand the roots and nature of the political conflicts that are roiling Europe and the United States." (Michael Kazin, author of The Populist Persuasion: An American History) "Populism is not just antiliberal, it is antidemocratic-the permanent shadow of representative politics. That's Jan-Werner Müller's argument in this brilliant book. There is no better guide to the populist passions of the present." (Ivan Krastev, International New York Times) "No one has written more insightfully and knowledgeably about Europe's recent democratic decay than Jan-Werner Müller. Here Müller confronts head on the key questions raised by the resurgence of populism globally. How is it different from other kinds of politics, why is it so dangerous, and how can it be overcome? Müller's depiction of populism as democracy's antipluralist, moralistic shadow is masterful." (Dani Rodrik, Harvard University) "The most useful work to comprehend Trump's appeal is What Is Populism? (2016) by Princeton University political scientist Jan-Werner Müller. In this essential book, Müller defines populism's most salient characteristics-antielitism, antipluralism, exclusivity-and explains Trump and other populists through that framework. It is a quick read, and worth every page." (The Washington Post) "What Is Populism? stands out from other analyses of populism in its dual methodology, combining political theory with political science. From the vantage of political philosophy, Müller argues that populism comes with a distinctive set of incentives and priorities, which do not necessarily overlap with those of traditional political actors. Yet his model also attempts to make causal arguments relating to the actions often taken by populists, which he illustrates through empirical examples." (Boston Review)