Cas Mudde holds a PhD from Leiden University and is currently the Hampton and Esther Boswell Distinguished University Professor of Political Science at DePauw University. His most recent book, Populist Radical Right Parties in Europe (Cambridge University Press, 2007), won the Stein Rokkan Prize and was named a Choice Outstanding Academic Title in 2008. Cristóbal Rovira Kaltwasser holds a PhD from the Humboldt University of Berlin, has worked for the United Nations Development Programme (UNDP) and was a postdoctoral fellow at the Social Science Research Center Berlin (WZB). He is the recipient of the Marie Curie Intra-European Fellowship for a two-year research project on populism in Europe and Latin America, which he is currently undertaking at the University of Sussex. His research interests include populism, democracy and Latin American politics and his work has been published in Democratization and the Latin American Research Review, among others.