Since the end of the twentieth century a broad and persistent movement away from centralized patterns of governance has become one of the defining trends in politics. In many new democracies the... Show moreSince the end of the twentieth century a broad and persistent movement away from centralized patterns of governance has become one of the defining trends in politics. In many new democracies the return to electoral politics has coincided with institutional reforms to promote decentralization. In Latin America, with its long and well-documented history of centralism, decentralization constitutes a departure from previous patterns of governance. This study seeks to shed light on the relationship between decentralization and political organization in Latin America, and aims to contribute to our understanding of how decentralization influences the way that conflicts in society are expressed, structured and managed through parties and party systems. Drawing on an in-depth study of Mexico as well as a comparative analysis of Latin American countries, it develops the argument that decentralization challenges political organization at the levels of party systems and organizations. The central contention is that a high level of decentralization can undermine the formation of nationalized party systems and cohesive parties. Decentralization affects the distribution of political and financial resources in the state and makes more resources available locally, and thus reshapes the context within which parties organize. Show less