Ken Kollman is Director of the Center for Political Studies, and Frederick G. L. Huetwell Professor and Professor of Political Science at the University of Michigan. He is the author of Outside Lobbying: Public Opinion and Interest Group Strategies (Princeton University Press), and Perils of Centralization: Lessons from Church, State, and Corporation (Cambridge University Press), among many other publications. He has contributed in diverse fields: computational social science, comparative and American politics, European Union studies, comparative federalism, and comparative political parties and elections. His American government textbook with W.W. Norton is now in its third edition. The New York Times and Washington Post have published his essays. He co-founded and is co-principal investigator of the Constituency-Level Election Archive (CLEA), which is the world’s largest repository of elections results data.