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 […]

This paper examines the policy positions of Chilean senators. The empirical analysis focuses on two different legislative activities: voting and coauthoring bills. The roll call analysis evaluates the degree to which coalitions act as cohesive policy teams on the floor of Congress, whether parties’ positions match conventional ideological rankings, and the dimensionality of voting decisions. The coauthorship analysis provides alternative ideal points to examine similar questions. The findings of the voting analysis reveal a rather unidimensional world with two distinct […]