Political institutions are or ought to be the main subject of political theory. The essays in this collection are works of political theory devoted specifically to the institutions and institutional principles of modern democracy. They illustrate the author's contention in the opening chapter that the theory of politics needs to reorient itself so that it is not just the study of social justice. Institutions need to be taken seriously, by normative political theorists as much as by empirical political scientists. The collection includes studies of constitutionalism, the separation of powers, bicameralism, loyal opposition, representation, legislative due process, democratic accountability, and judicial review. It also includes critical essays on the political philosophies of Hannah Arendt and Isaiah Berlin--Publisher's information Political theorists focus on the nature of justice, liberty, and equality while ignoring the institutions through which these ideals are achieved. Political scientists keep institutions in view but deploy a meager set of value-conceptions in analyzing them. A more political political theory is needed to address this gap, Jeremy Waldron argues.