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.