Steven Levitsky is Professor of Government at Harvard University. His research interests include political parties, political regimes, and informal institutions, with a focus on Latin America. Professor Levitsky is author of Transforming Labor-Based Parties in Latin America: Argentine Peronism in Comparative Perspective (2003) and co-editor of Argentine Democracy: The Politics of Institutional Weakness (2005) and Informal Institutions and Democracy: Lessons from Latin America (2006), and he is currently co-editing a volume on the rise of the Left in Latin America in the 2000s. He has published articles in the Annual Review of Political Science, Comparative Political Studies, Comparative Politics, the Journal of Democracy, the Journal of Latin American Studies, Latin American Politics and Society, the Latin American Research Review, Party Politics, Perspectives on Politics, Studies in Comparative International Development, and World Politics. He is on the editorial board of the Journal of Democracy. Lucan Way is an Assistant Professor of Political Science at the University of Toronto. His research interests include political regimes, fiscal and social reform, corruption, and post-communist politics. Professor Way is currently completing a book, Pluralism by Default: Sources of Political Competition in the Former Soviet Union, and has published articles in the Brown Journal of World Affairs, Communist and Post-Communist Studies, Comparative Politics, East European Politics and Societies, the Journal of Democracy, the Journal of Communist Studies and Transition Politics, Politics and Society, Post-Soviet Affairs, Studies in Comparative and International Development, and World Politics, as well as several book chapters. He is on the editorial board of the Journal of Democracy.