Professor of Political Science at the Federal University of Parana (UFPR), Brazil, since 1992. Editor of the journal Revista de Sociologia e Política/Journal of Sociology and Politics (www.scielo.br/rsocp), he is a coordinator of the Center for Research in Political Sociology (NUSP), at the UFPR. He is the project director of the National Institute of Science and Technology (INCT) Representation and Democratic Legitimacy.