Silja Häusermann is Professor of Political Science at the University of Zurich, having previously been a Professor at the University of Konstanz and a fellow at the Wissenschaftskolleg zu Berlin. She directed the ERC project 'welfarepriorities' and is the co-director of the UZH University Research Priority Programme 'Equality of Opportunity'. Her work focuses on comparative political economy, inequality, comparative welfare state politics, and party system change in advanced capitalist democracies.Macarena Ares is a Serra Húnter Assistant Professor in the Department of Political Science at the Universitat de Barcelona. She holds a PhD from the European University Institute, and was previously a Postdoctoral Researcher at the University of Zurich. Her research focuses on class politics, welfare policies, corruption voting, and political socialization. Her work has been published in the British Journal of Political Science, the European Journal of Political Research, and West European Politics.Matthias Enggist is a postdoctoral researcher at Department of Political Science at the University of Zurich. He holds a PhD from the University of Zurich and was previously a postdoctoral researcher at the Centre LIVES at the University of Lausanne. His research interests include welfare politics, welfare chauvinism, public opinion, party competition, and regional inequalities. His work has appeared in the European Journal of Political Research, Journal of European Social Policy, Journal of European Public Policy, and West European Politics.Michael Pinggera works at the Education Department of the City of Zurich. He was previously a a postdoctoral researcher at the Department of Political Science at the University of Zurich, and he holds a PhD from the University of Zurich. His work has appeared in the European Journal of Political Research, West European Politics, Journal of European Public Policy, and Swiss Political Science Review.

• 1: Introduction 2: The Mass Politics of Social Policy Reform in Twenty-First-Century Western Europe: A Theoretical Framework 3: Social Policy Responses to the Rise of the Knowledge Economy 4: Social Policy Responses to Demographic Ageing in Changed Labour Markets 5: Social Policy Responses to Immigration and Its Politicization 6: Divides, Coalitions, and Priorities across Social Policy Fields and Regimes 7: Conclusion Appendix

Silja Häusermann is Professor of Political Science at the University of Zurich, having previously been a Professor at the University of Konstanz and a fellow at the Wissenschaftskolleg zu Berlin. She directed the ERC project 'welfarepriorities' and is the co-director of the UZH University Research Priority Programme 'Equality of Opportunity'. Her work focuses on comparative political economy, inequality, comparative welfare state politics, and party system change in advanced capitalist democracies.Macarena Ares is a Serra Húnter Assistant Professor in the Department of Political Science at the Universitat de Barcelona. She holds a PhD from the European University Institute, and was previously a Postdoctoral Researcher at the University of Zurich. Her research focuses on class politics, welfare policies, corruption voting, and political socialization. Her work has been published in the British Journal of Political Science, the European Journal of Political Research, and West European Politics.Matthias Enggist is a postdoctoral researcher at Department of Political Science at the University of Zurich. He holds a PhD from the University of Zurich and was previously a postdoctoral researcher at the Centre LIVES at the University of Lausanne. His research interests include welfare politics, welfare chauvinism, public opinion, party competition, and regional inequalities. His work has appeared in the European Journal of Political Research, Journal of European Social Policy, Journal of European Public Policy, and West European Politics.Michael Pinggera works at the Education Department of the City of Zurich. He was previously a a postdoctoral researcher at the Department of Political Science at the University of Zurich, and he holds a PhD from the University of Zurich. His work has appeared in the European Journal of Political Research, West European Politics, Journal of European Public Policy, and Swiss Political Science Review.

• 1: Introduction 2: The Mass Politics of Social Policy Reform in Twenty-First-Century Western Europe: A Theoretical Framework 3: Social Policy Responses to the Rise of the Knowledge Economy 4: Social Policy Responses to Demographic Ageing in Changed Labour Markets 5: Social Policy Responses to Immigration and Its Politicization 6: Divides, Coalitions, and Priorities across Social Policy Fields and Regimes 7: Conclusion Appendix

Silja Häusermann is Professor of Political Science at the University of Zurich, having previously been a Professor at the University of Konstanz and a fellow at the Wissenschaftskolleg zu Berlin. She directed the ERC project 'welfarepriorities' and is the co-director of the UZH University Research Priority Programme 'Equality of Opportunity'. Her work focuses on comparative political economy, inequality, comparative welfare state politics, and party system change in advanced capitalist democracies.Macarena Ares is a Serra Húnter Assistant Professor in the Department of Political Science at the Universitat de Barcelona. She holds a PhD from the European University Institute, and was previously a Postdoctoral Researcher at the University of Zurich. Her research focuses on class politics, welfare policies, corruption voting, and political socialization. Her work has been published in the British Journal of Political Science, the European Journal of Political Research, and West European Politics.Matthias Enggist is a postdoctoral researcher at Department of Political Science at the University of Zurich. He holds a PhD from the University of Zurich and was previously a postdoctoral researcher at the Centre LIVES at the University of Lausanne. His research interests include welfare politics, welfare chauvinism, public opinion, party competition, and regional inequalities. His work has appeared in the European Journal of Political Research, Journal of European Social Policy, Journal of European Public Policy, and West European Politics.Michael Pinggera works at the Education Department of the City of Zurich. He was previously a a postdoctoral researcher at the Department of Political Science at the University of Zurich, and he holds a PhD from the University of Zurich. His work has appeared in the European Journal of Political Research, West European Politics, Journal of European Public Policy, and Swiss Political Science Review.

• 1: Introduction 2: The Mass Politics of Social Policy Reform in Twenty-First-Century Western Europe: A Theoretical Framework 3: Social Policy Responses to the Rise of the Knowledge Economy 4: Social Policy Responses to Demographic Ageing in Changed Labour Markets 5: Social Policy Responses to Immigration and Its Politicization 6: Divides, Coalitions, and Priorities across Social Policy Fields and Regimes 7: Conclusion Appendix