NICHOLAS AYLOTT is Senior Lecturer in political science at Södertörn University, Sweden. His research interest is in comparative European politics and, especially, political parties. Among his publications in this field is a co-edited book, The Europeanization of National Political Parties: Power and Organizational Adaptation (2007). MAGNUS BLOMGREN is Lecturer in Political Science at Umeå University, Sweden. His research interests relate to various aspects of democracy – European integration, parliamentarism and political parties. He has recently co-edited a book on Parliamentary Roles in Modern Legislatures (2012). Torbjörn Bergman is Professor of Political Science at Umeå University, Sweden. Recent publications include co-edited books on Cabinets and Coalition Bargaining: The Democratic Life Cycle in Western Europe (2008) and The Madisonian Turn: Political Parties and Parliamentary Democracy in Nordic Europe (2011).