Ph.D. (2003) in Political Science from Leiden University. Currently Associate Professor at the Department of Political Science, Maastricht University. Was a Jean Monnet Fellow at the Robert Schuman Centre for Advanced Studies, European University Institute in Florence (2003-2004) and FCT Post-Doctoral Research Fellow at the Institute of Social Sciences, University of Lisbon (2007-2010). Also held Visiting Scholarships at the Center for European Studies, New York University (2004) and at the Department of Philosophy and Culture, University of Minho (2005). Consortium member of the European Union Democracy Observatory on Citizenship.