Democracy is usually conceived as based on self-rule or rule by the people, and it is this which is taken to ground the legitimacy of the democratic form of government. But who constitutes the people? Democratic political theory has a potentially fatal weakness at its core unless it can answer this question satisfactorily. In The Time of Popular Sovereignty , Paulina Ochoa Espejo examines the problems the concept of the people raises for liberal democratic theory, constitutional theory, and...