George Blumenthal Professor and Professor of Political Science and International and Public Affairs
Columbia University

Sharyn O’Halloran is the George Blumenthal Professor of Politics in the Department of Political Science and the School of International and Public Affairs at Columbia University. Professor O’Halloran obtained her Ph.D. from the University of California at San Diego in 1991. Her research interests include U.S. trade policy, voting rights, the political economy of regulation, institutional analysis and statistical methods.  A selection of publications include Politics, Process and American Trade Policy, University of Michigan Press, 1994; Delegating Powers, with David Epstein, Cambridge University Press, 1999; The Future of the Voting Rights Act,  with David Epstein, Rodolfo de la Garza and Richard Pildes, Russell Sage Foundation, 2006, "Measuring the Electoral and Policy Impact of Majority-Minority Voting Districts," with David Epstein, American Journal of Political Science, 42, April 1999, "A Social Science Approach to Race, Redistricting, and Representation," with David Epstein, American Political Science Review, 93, March 1999, “Divided Government and U.S. Trade Policy,” with Susanna Lohmann, International Organization, 48, 1994, “Democratic Transitions,” with David Epstein and Robert Bates, American Journal of Political Science, 52, 2006, and others.