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Distinguishing between influences on Brazilian legislative behavior

Zucco, Caesar and Lauderdale, Benjamin E. (2011) Distinguishing between influences on Brazilian legislative behavior. Legislative Studies Quarterly, 36 (3). pp. 363-396. ISSN 0362-9805

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Identification Number: 10.1111/j.1939-9162.2011.00019.x


Ideal point estimators hold the promise of identifying multiple dimensions of political disagreement as they are manifested in legislative voting. However, standard ideal point estimates do not distinguish between ideological motivations and voting inducements from parties, coalitions, or the executive. In this article we describe a general approach for hierarchically identifying an ideological dimension using an auxiliary source of data. In the case we consider, we use an anonymous survey of Brazilian legislators to identify party positions on a left-right ideology dimension. We then use this data to distinguish ideological motivations from other determinants of roll-call behavior for eight presidential-legislative periods covering more than 20 years of Brazilian politics. We find that there exists an important nonideological government-opposition dimension, with the entrance and exit of political parties from the governing coalition appearing as distinct shifts in ideal point on this second dimension. We conjecture that the Brazilian president's control over politically important resources is the source of this dimension of conflict, which has recently become far more important in explaining roll-call voting than the ideological dimension.

Item Type: Article
Official URL:
Additional Information: © 2011 Comparative Legislative Research Center of The University of Iowa
Divisions: Methodology
Subjects: J Political Science > JL Political institutions (America except United States)
Date Deposited: 02 Sep 2011 13:54
Last Modified: 16 May 2024 01:16

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