Political parties provide a crucial link between voters and politicians. This link takes a variety of forms in democratic regimes, from the organization of political machines built around clientelistic networks to the establishment of sophisticated programmatic parties. Latin American Party Systems provides a novel theoretical argument to account for differences in the degree to which political party systems in the region were programmatically structured at the end of the twentieth century. Based on a diverse array of indicators and surveys of party legislators and public opinion, the book argues that learning and adaptation through fundamental policy innovations are the main mechanisms by which politicians build programmatic parties. Marshalling extensive evidence, the book's analysis shows the limits of alternative explanations and substantiates a sanguine view of programmatic competition, nevertheless recognizing that this form of party system organization is far from ubiquitous and enduring in Latin America.

Mainwaring and Scully's concept of party system institutionalization (PSI) has greatly influenced the literature on parties and party systems. This article contributes to the “revisionist” literature on PSI by exploring the recent evolution of the concept's four dimensions in Chile. It finds that the Chilean party system is not homogenously institutionalized (as conventionally argued) but is simultaneously frozen at the elite level and increasingly disconnected from civil society. In this regard, it approaches some recent descriptions of the Brazilian party system, a prototypical example of an “inchoate” party system that has gained stability over time without developing roots in society. This article argues that the current operationalization of the concept of PSI is problematic. Not only should all four dimensions of the concept be simultaneously measured, probably through multiple indicators for each one, but their trends across time and space should also be better integrated into the concept's theoretical structure.

This study of Uruguay's Frente Amplio explores four central questions for the analysis of the “new Latin American left.” How did a leftist alternative emerge and grow inside an institutionalized party system? How do the socioeconomic and political factors that enabled the rise of the left in Uruguay differ from those observed in other Latin American cases? How did Frente Amplio adapt itself to profit from the opportunities that arose during the 1990s? What are the implications of the previous factors for governmental action by the FA? In answering these questions, this study integrates an analysis of the sociological and political‐institutional opportunity structures consolidated during the 1990s with one of strategic partisan adaptation processes. This perspective is useful for explaining how, by 2004, Frente Amplio had built a dual support base from its historical constituency and a socially heterogeneous group alienated from traditional parties due to economic and political discontent.

By analysing the socially segmented party–voter linkages deployed by the Unión Demócrata Independiente (Independent Democratic Union, UDI), a Chilean conservative party, this article demonstrates the usefulness of combining Kitschelt's party–voter linkage framework with Gibson's conceptual approach to conservative party electoral coalition-making. In Latin America, parties take advantage of social fragmentation and the availability of non-state campaign financing to combine multiple linkage types and thus attract socially diverse constituencies. Although it is an opposition party, UDI's historical trajectory and organisation have enabled it to receive private funds from its traditional and party-identified core constituency (business and conservative sectors), whose programmatic preferences and interests it represents, and then use these resources in a ‘charismatic’ mobilisation approach and particularistic exchanges with a non-core constituency (low-income, non-traditional voters of the radical right), in a segmented, but nationally integrated, electoral strategy.

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