Columbia International Affairs Online: Working Papers

CIAO DATE: 03/2015

The Politics of Polarization: Governance and Party System Change in Latin America, 1990–2010

Sam Handlin

November 2014

The Joan B. Kroc Institute for International Peace Studies, University of Notre Dame

Abstract

What are the causes and implications of polarization in new democracies? During Latin America’s “Left Turn” period, highly polarized party systems emerged in some countries–Venezuela, Bolivia, Ecuador, Nicaragua, and El Salvador–but not the rest of the region. This paper proposes a theory to explain variation, centered on the presence of electorally relevant parties of the left in the pre-Left Turn period and, most critically, the quality of governance in that period. Poor governance created opportunities for partisan actors on the left to politicize a second dimension of political contestation, anti-systemic versus systemic positions on the design and operation of the state, and thus chart alternative paths to electoral viability that required little left-right programmatic moderation. This dynamic empowered radical party factions and drove polarizing dynamics in party systems. High quality governance, in contrast, gave left parties little choice but to moderate their programs in search of electoral viability. This dynamic empowered moderate party factions and drove centripetal dynamics in party systems. Empirically, the paper tests these arguments through a broad overview of the case universe and in-depth case studies of Venezuela and Brazil.