Lorenzo De Sio is Associate Professor at the LUISS Guido Carli University, Rome, where he teaches several courses at all levels. Formerly Visiting Research Fellow at UC Irvine, Jean Monnet Fellow at the Robert Schuman Centre of the European University Institute, Campbell National Fellow at Stanford University, he is the coordinator of the CISE (Centro Italiano Studi Elettorali) and a member of the Scientific Council of the ITANES (Italian National Election Studies). A member of the Methods Working Group of the “True European Voter” international research project (ESF-COST Action IS0806), he participates to the EUDO Observatory on Public Opinion, Political Elites and the Media. His research interests are broadly into elections, voting behaviour and party competition in comparative perspective. Among his publications, beyond several books and edited books in Italian and English, are articles appearing in the American Political Science Review, Comparative Political Studies, Electoral Studies, Party Politics, West European Politics, South European Society and Politics, and all major Italian political science journals.