It is impossible to overstate the ways in which Claude Lefort has influenced democratic theorizing over the past three decades. With the impact he has had on some of the 20th and 21st Centuries most notable and important Political Theorists from Ernesto Laclau, Chantal Mouffe andSlavoj Zizek to Jacques Ranciere, Andrew Arato and Jean Cohen, Lefort's thought has become both radical and liberal democracy's obligatory reference and unparalleled knot of confluence. This volume brings together scholars from around the world and offers an engaging and comprehensive investigation of Lefort's intellectual dialogues and debates, his engagement with the most relevant global political events of the past decades, and his impact on current innovations in continental political and social theory. As a result this book a vital reference point for students and scholars of Claude Lefort as well as of radical and liberal democracy in general.