*How Democracies Die (with Steven Levitsky), Crown, 2018.
*Press/Reviews: New York Times, The Economist, Financial Times, The Guardian, der Spiegel, The Washington Post,
*Conservative Parties and the Birth of Democracy (Cambridge: Cambridge University Press, 2017)
Press/Reviews: *David Frum "Why do Democracies Fail" The Atlantic (2017);
*Structuring the State: The Formation of Italy and Germany and the Puzzle of Federalism (Princeton: Princeton University Press, 2006)
(Co-Winner of 2007 Best Book Prize, European Politics and Society Section, APSA; 2004 Winner of Gabriel Almond Prize, Best Dissertation in Comparative Politics; 2003 Winner of Ernst B. Haas Prize, Best Dissertation in European Politics and Society (APSA)