Wouter van der Brug is associate professor in methods for the social sciences at the Amsterdam School for Communications Research, University of Amsterdam, Netherlands. His work has been published in Comparative Political Studies, the British Journal of Political Science, the European Journal of Political Research, Electoral Studies, Party Politics, the Journal of Theoretical Politics, West European Politics, and Acta Politica. He recently co-authored European Elections and Domestic Politics (with Cees van der Eijk, 2007). Cees van der Eijk is professor of social science research methods at the University of Nottingham, England. He taught at the University of Amsterdam from 1971 to 2004, was a Fulbright Scholar at the University of Wisconsin-Madison in 1976-7, and was a Visiting Scholar at the Netherlands Institute for Advanced Study in 1988-9. He is the author or co-author of fifteen books, including European Elections and Domestic Politics (with Wouter van der Brug, 2007), Citizen Participation in European Politics (with Hans Agne and others, 2000), In Search of Structure (with Meindert Fennema and Huib Schijf, 1998) and Choosing Europe? (with Mark Franklin and others, 1996), and of many articles and chapters in refereed journals and books. Mark Franklin is the Stein Rokkan Professor of Comparative Politics at the European University Institute in Florence while on leave from Trinity College, Connecticut, where he has been teaching since 1998. He has also taught at the universities of Chicago, Iowa, and Houston in the USA and at the University of Strathclyde in Glasgow, Scotland. He has published eleven books, including Voter Turnout and the Dynamics of Electoral Competition in Established Democracies since 1945 (Cambridge, 2004), Choosing Europe? (with Cees van der Eijk and others, 1996), and Electoral Change (with Tom Mackie, Henry Valen, and others, Cambridge, 1992). He founded the Public Opinion and Participation Section of the European Union Studies Association, has been a director of the European Election Studies project since 1987, and has served on the editorial boards of six journals.