Nancy Rosenblum was appointed Chair of the Department of Government in 2004, having joined the department as a professor in January 2001. Her fields of study are the history of modern political thought, contemporary political theory, and constitutional law. Professor Rosenblum is the author of several books, including On the Side of the Angels: An Appreciation of Parties and Partisanship (Princeton University Press, 2008) and Membership and Morals: The Personal Uses of Pluralism in America, which was awarded the 2002 David Easton Award (ASPA). She is a member of the American Political Science Association Taskforce on Religion and Politics, and has contributed a chapter to their volume Religious Pluralism and the Logic of Congruence. Her memberships at Harvard include the Committee on Appointments and Promotions and the University Committee on Human Rights. Professor Rosenblum is a member of the American Academy of Arts and Sciences.

Professor Rosenblum was a Senior Scholar in Ethics in 2003-2004, and became a member of the Faculty Committee in 2007.