Democracy seems to be in crisis and scholars have started to consider the possibility that “the only game in town” might be rigged. This book theorizes the crisis of democracy from a structural point of view, arguing that liberal representative governments suffer from systemic corruption, a form of political decay that should be understood as the oligarchization of society, and proposes an anti-oligarchic institutional solution based on a radical interpretation of republican constitutional thought. If one agrees that the minimal normative expectation of liberal democracies is that governments should advance the welfare of the majority within constitutional safeguards, increasing income inequality and the relative immiseration of the majority of citizens would be in itself a deviation from good rule, a sign of corruption. As a way to understand how we could revert the current patterns of political corruption, the book provides an in-depth analysis of the institutional, procedural, and normative innovations to protect political liberty proposed by Niccolò Machiavelli, Nicolas de Condorcet, Rosa Luxemburg, and Hannah Arendt. Because their ideas to institutionalize popular power have consistently been misunderstood, instrumentalized, demonized, or neglected, part of what this project wants to accomplish is to offer a serious engagement with their proposals through a plebeian interpretative lens that renders them as part of the same intellectual tradition. In this way, the book assembles a “B side” of constitutional thought composed of the apparent misfits in a tradition that has been dominated by the impulse to suppress conflict instead of harnessing its liberty-producing properties. As a way to effectively deal with systemic corruption and oligarchic domination, the book proposes to follow this plebeian constitutionalism and instituionalize popular collective power. A proposed plebeian branch would be autonomous and aimed not at achieving self-government or direct democracy, but rather at an effort to both judge ...