Yukio Koriyama is an Associate Professor in the Department of Economics at École Polytechnique in France. He obtained a Ph.D. in Economics at University of Chicago in 2008 under the supervision of Roger Myerson. His main research fields are game theory and political economy. His research topics include: collective decision making in committees, strategic voting, institutional design, and apportionment problems. His papers have been published in leading journals such as the Journal of Political Economy, Theoretical Economics, and Games and Economic Behavior.