The Oxford Handbooks of Political Science is a ten-volume set of reference books offering authoritative and engaging critical overviews of the state of political science. Each volume focuses on a particular part of the discipline, with volumes on Public Policy, Political Theory, Political Economy, Contextual Political Analysis, Comparative Politics, International Relations, Law and Politics, Political Behavior, Political Institutions, and Political Methodology. The project as a whole is under the General Editorship of Robert E. Goodin, with each volume being edited by a distinguished international group of specialists in their respective fields. The books set out not just to report on the discipline, but to shape it. The series will be an indispensable point of reference for anyone working in political science and adjacent disciplines. The study of political institutions is among the founding pillars of political science. With the rise of the 'new institutionalism', the study of institutions has returned to its place in the sun. This volume provides a comprehensive survey of where we are in the study of political institutions, covering both the traditional concerns of political science with constitutions, federalism and bureaucracy and more recent interest in theory and the constructed nature of institutions. The Oxford Handbook of Political Institutions draws together a galaxy of distinguished contributors drawn from leading universities across the world. Authoritative reviews of the literature and assessments of future research directions will help to set the research agenda for the next decade.