He is originally from Argentina, but grew up in Germany before coming to France for university. He studied at Sciences Po, the LSE and the University of Cambridge. He teaches comparative politics, media and politics, and related subjects. At Sciences Po, he coordinates the program on "Politics and Public Policy" at the School of Public Affairs and co-directs the research axis on "Evaluating democracy" at LIEPP. He is also the co-editor of the European Journal of Political Research. His research concentrates on agenda-setting, political institutions and media, and politics. Currently, he is especially interested in the determinants of people's judgements of government performance and the way media influences policymaking.