Political decentralization and party decay in Latin America

Abstract

Early advocates of decentralization lauded it as a strategy for strengthening democratic institutions, but later scholarship has emphasized decentralization’s negative consequences, especially for political parties. This article argues that the impact of political decentralization on established parties is shaped by the context in which the reforms occur, with poor economic performance and limited programmatic differentiation making parties more vulnerable to the challenges posed by decentralization. The article explores how decentralization under such circumstances has contributed to party decay in Latin America, where declining support for established parties has been significant, in some places undermining democratic stability and governability. The article employs cross-national time-series analysis and case studies. The quantitative evidence indicates that political decentralization weakens existing parties in contexts of poor economic conditions and little ideological differentiation in the party system. Case studies elaborate the processes through which decentralizing reforms together with economic conditions and party linkages affect party systems.