Emmanouil Tsatsanis is Researcher at the Greek National Centre for Social Research (EKKE) and at the Hellenic Foundation for European and Foreign Policy (ELIAMEP). His research focuses on electoral behaviour, political identities, political representation, and party systems. He is coeditor of the volumes Political Representation in Southern Europe and Latin America (Routledge, 2020) and Political Representation and Citizenship in Portugal: From Crisis to Renewal.

Marco Lisi is Associate Professor in the Department of Political Science at Nova University of Lisbon and Researcher at IPRI-NOVA. His research interests focus on political parties, electoral behaviour, democratic theory, political representation and election campaigns. He has published several articles in national and international journals. He recently edited Party System Change, the European Crisis and the State of Democracy (Routledge, 2019).

André Freire is Professor of Political Science (PS) at ISCTE-University Institute of Lisbon, where he is also Director of the PhD in PS (2015-present) and of the Bachelor in PS (2009-2015). He is the Director of the Observatory for Democracy and Political Representation, and of the Research Line IV, Politics and Citizenship, both at CIES-ISCTE. He has directed several research projects on ideology, electoral behaviour, institutions, political reforms, as well as political representation and has published around 30 books and 100 articles.