Jorge M. Fernandes is a Ramón y Cajal Fellow at the Institute of Public Goods and Policies, CSIC, Madrid. His research spans political representation, electoral systems, and party competition. He is co-editor of the Oxford Handbook of Portuguese Politics and holds an ERC Consolidator Grant.Nuno Garoupa is Professor of Law and Faculty Director of Graduate Studies at Antonin Scalia Law School, George Mason University. He has previously held positions at Texas A&M University, University of Illinois, Universidade Nova de Lisboa, and Universitat Pompeu Fabra. His research spans law and economics, comparative judicial politics, and empirical legal studies.Maria Jose Hierro is a Lecturer in Political Science at Yale University. Her research examines the drivers of national identity, national attitudes, and secession. Her work has appeared in the American Journal of Political Science, Journal of Conflict Resolution, South European Society and Politics, West European Politics, and Nations and Nationalism.Sofia Vasilopoulou is Professor of European Politics at King's College London. A former co-Editor-in-Chief of the European Journal of Political Research, her research examines political dissatisfaction, Euroscepticism, and far-right politics. She is the author of Far Right Parties and Euroscepticism and has published widely in leading comparative politics journals.