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Brazilian Political Science Review (BPSR) is committed to the diffusion of high-work produced on topics of political science and international relations, thereby contributing to the exchange of ideas in the international political science community and the internationalization of scientific knowledge produced in Brazil.
Notice to Readers: All the datasets published by the Brazilian Political Science Review are available at: https://dataverse.harvard.edu/dataverse/bpsr
Brazilian Political Science Review (BPSR) is committed to the diffusion of high-work produced on topics of political science and international relations, thereby contributing to the exchange of ideas in the international political science community and the internationalization of scientific knowledge produced in Brazil.
Notice to Readers: All the datasets published by the Brazilian Political Science Review are available at: https://dataverse.harvard.edu/dataverse/bpsr
05/Jan/2026
Pedro Paulo de Assis
, Glauco Peres da Silva
DOI: 10.1590/1981-3821202600010001
Abstract The legislative success of presidential agendas in Brazil has traditionally been attributed to formal coalitions formed by the Executive. While the centrality of these coalitions is widely recognized, a key question remains: do formal governing coalitions secure sufficient votes to guarantee this success? To explore this question, the study develops a Legislative Performance Index (LPI) that measures the contribution of each party’s votes to the approval of Executive-backed bills. Drawing on data from 2,030 roll-call votes in the Chamber […]
Keywords: coalition presidentialism; informal coalition; opposition; political parties; Roll call votes