Joost van Spanje is Professor of Political Science at Royal Holloway University of London. He specializes in comparative politics, political communication, political behaviour, and public opinion. He received several individual research grants, including an NWO Veni, an NWO Vidi, and an ERC Consolidator Grant. Rachid Azrout is Assistant Professor of Political Communication at the University of Amsterdam. His main research interests lie on the interplay of media exposure and public opinion, and studies this in relation to topics as immigration, polarisation, electoral behaviour, and party politics. His work has been published in, among other journals, the European Journal of Political Research, Political Behavior, the Journal of Communication, and Public Opinion Quarterly.