This volume brings together essays by many of the leading scholars of comparative constitutional design from myriad disciplinary perspectives, including law, philosophy, political science, and economics. The authors collectively assess what we know – and do not know – about the design process as well as particular institutional choices concerning executive power, constitutional amendment processes, and many other issues. Bringing together positive and normative analysis, it provides the state of the art in a field of growing theoretical and practical importance. Tom Ginsburg is the Leo Spitz Professor of Law and Political Science at the University of Chicago. He is the coauthor of The Endurance of National Constitutions (2009, with Zachary Elkins and James Melton), which won the best book award from the Comparative Democratization Section of the American Political Science Association. His other books include Rule by Law: The Politics of Courts in Authoritarian Regimes (2008, with Tamir Moustafa) and Judicial Review in New Democracies (2003), which won the American Political Science Association’s C. Herman Pritchett Award for best book on law and courts.