Marc Stears is Fellow in Politics at University College, Oxford, having previously been Fellow in Social and Political Sciences at Emmanuel College, Cambridge. He is the author of Demanding Democracy: American Radicals in Search of a New Politics (2010) and Progressives, Pluralists and the Problems of the State (2002), as well as joint editor of Political Theory: Methods and Approaches (2008). He is well-known for his research on methodology in the history of political thought and for innovative approaches to the study of political ideologies.