In this important and wide-ranging book, a leading political theorist and activist considers the question: What justifies democracy? Carlos Santiago Nino critically examines answers others have given and then develops his own distinctive theory of democracy, emphasizing its deliberative character. In Nino's view, democracy resembles a moral conversation and is valued because of its capacity to generate an impartial perspective, one that takes into account the interests of all citizens.

Nino's conception of deliberative democracy bears on the way power is organized under a constitution. Drawing on a variety of constitutional traditions, he criticizes the presidential system and calls for citizens to participate more directly in the political life of their country. He also envisions a revitalized role for political parties. Nino shows how deliberative democracy can be combined with, and supported by, other constitutional practices, such as the specific wording of the text and the protection of individual rights. The complex constitution that emerges from his analysis consists of a historical constitution, an ideal constitution of rights, and an ideal constitution of power. Nino's goal is to explain how these three dimensions of constitutionalism can reinforce rather than conflict with each other. In a final chapter, he argues that the deliberative conception of democracy requires a more limited role for judicial review than is usually contemplated.