tarik abou-chadi is Associate Professor in European Union and Comparative European Politics at the Department of Politics and International Relations and Professorial Fellow at Nuffield College. His research focuses on elections, political parties, and the transformation of political competition and democratic representation in postindustrial societies. Personal homepage: www.tarikabouchadi.net.

macarena ares is Assistant Professor of Political Science at the University of Barcelona. Her research addresses the transformation of the social class cleavage in postindustrial economies, distributive conflict over welfare policies, and citizens’ responses to institutional performance. Her work on these themes has appeared in the British Journal of Political Science, the Journal of Politics, and the European Journal of Political Research, among others. Personal homepage: www.macarenaares.com.

daniel bischof is Professor of Political Science at the University of Münster and Associate Professor of Political Science at Aarhus University. He primarily works on questions in comparative politics and political behavior. He studies some of the key challenges contemporary democracies are facing, such as the rise of extremism, its societal consequences, remedies to mitigate extremism, and the erosion of social norms more generally. His research has been published in the American Journal of Political Science, the American Political Science Review, the British Journal of Political Science, and the Journal of Politics, among others. Personal homepage: www.danbischof.com.

björn bremer is Assistant Professor in the Department of Political Science at Central European University, Vienna. He studies the politics of macroeconomic policies, welfare state politics, and the political consequences of economic crises. He is the author of Austerity from the Left: Social Democratic Parties in the Shadows of the Great Recession (Oxford University Press, 2023). Personal homepage: www.bjoern-bremer.com.

jane gingrich is Professor of Social Policy at the Department of Social Policy and Intervention, the University of Oxford. Her areas of expertise are comparative political economy and comparative social policy; she has a particular interest in the contemporary restructuring of the welfare state and the politics of institutional change. Her research has been published in the Journal of Politics, Comparative Political Studies, the Journal of European Social Policy, and the Socio-Economic Review, among others.

silja häusermann is Professor of Political Science at the University of Zurich. She studies welfare state politics, party system change, and inequality in advanced capitalist democracies. Related to the current book, she coedited The Politics of Advanced Capitalism (Cambridge University Press, 2015) and The World Politics of Social Investment I and II (Oxford University Press, 2022), and coauthored Cleavage Formation in the 21st Century: How Social Identities Shape Voting Behavior in Contexts of Electoral Realignment (Cambridge University Press, 2024), among others. Personal homepage: www.siljahaeusermann.org.

johannes karreth is Associate Professor of Politics at Ursinus College. He studies international organizations and political conflict, and the effect of mass public opinion on party system change and globalization. He coauthored Incentivizing Peace (Oxford University Press, 2018) and has published articles in the Journal of Conflict Resolution and the Journal of Peace Research, among others. Personal homepage: www.jkarreth.net.

herbert kitschelt is George V. Allen Distinguished Professor of International Relations at Duke University. His investigations cover political party competition and citizen–politician linkages. Related to the current book, he published The Transformation of European Social Democracy (Cambridge University Press, 1994) and coedited The Politics of Advanced Capitalism (Cambridge University Press, 2015).

thomas kurer is Assistant Professor in the Department of Political Science at the University of Zurich. He studies the political implications of labor market transformation and occupational change in postindustrial societies. Personal homepage: www.thomaskurer.net.

reto mitteregger is a PhD candidate at the University of Zurich. His research focuses on electoral behavior, attitudinal change, and political parties, with a particular focus on generational change, socialization, and age differences. His PhD thesis, on generational voting effects in Western Europe, has been supported by a grant from the Swiss National Science Foundation. Department homepage: www.ipz.uzh.ch/en/people/employees/rmitte.html.

nadja mosimann is Executive Manager of the Swiss think tank Denknetz. Previously, she was a postdoctoral researcher at the University of Zurich. She holds a PhD from the University of Geneva on the role of trade unions in the politics of advanced capitalist democracies. Her research has been published in World Politics and West European Politics, among other academic journals.

jonathan polk is Professor of Political Science at Lund University. He studies party competition, European integration, and intraparty politics in advanced capitalist democracies. His research has been published in Comparative Political Studies, the European Journal of Political Research, the Journal of European Public Policy, and the Journal of Politics, among others. Homepage: www.svet.lu.se/en/jonathan-polk.

philipp rehm is Professor of Political Science at Johns Hopkins University. His work is on welfare state and party politics. He recently published Big Data and the Welfare State. How the Information Revolution Threatens Social Solidarity (Cambridge University Press, 2022, with Torben Iversen).

zeynep somer-topcu is an associate professor in the Department of Government at the University of Texas at Austin. Her research interests include party politics, voter behavior and perceptions, election results, and representation. Her main focus is on Western Europe, though her research often extends to other advanced industrial democracies. She was the cowinner of the Emerging Scholar Award given by the American Political Science Association section on Political Organizations and Parties. Personal homepage: https://zeynepsomer.com/.

mathilde m. van ditmars is Senior Researcher at the University of Lucerne and an associated researcher at the University of Zurich in Switzerland. Her research focuses on political sociology regarding questions of political socialization, class voting, and gender and political behavior. Her work has appeared in the British Journal of Political Science, the European Journal of Political Research, and West European Politics, among others. Personal homepage: www.mathildevanditmars.eu.

markus wagner is Professor in the Department of Government at the University of Vienna in Austria. His research focuses on party competition, voting behavior, and polarization. He is currently leading a project on partisan prejudice in Europe (funded by the European Research Council). Personal homepage: www.wagnermarkus.net.

daniel weitzel is Assistant Professor of Political Science at Colorado State University. His research examines the strategic behavior of parties and voters in multiparty elections. His research has appeared in the American Journal of Political Science, Comparative Political Studies, and PS: Politics and Political Science.