Lisa Disch is Professor of Political Science and teaches political theory at the University of Michigan, Ann Arbor (US). Author of Hannah Arendt and the Limits of Philosophy (Cornell University Press 1994), The Tyranny of the Two-Party System (Columbia University Press 2002), and co-editor (with Mary Hawkesworth) of the Oxford Handbook of Feminist Theory (Oxford University Press 2016), she works on feminist theory, democratic theory, and environmental political theory Mathijs van de Sande teaches political philosophy at Radboud University Nijmegen. In 2017, he obtained his PhD at the Institute of Philosophy in Leuven with a thesis on the prefigurative repertoire of recent assembly movements, such as Occupy Wall Street. His main research interests are radical democratic theory, political representation, activism and social movement theory. Nadia Urbinati teaches political theory at Columbia University, New York (US). She works on democratic theory, and in particular representative democracy, populism, plebiscitary leadership, post-party representation.