The paper looks at the relationship between institutions and vote unity in national parliaments with the help of a large data set of votes from 33 national parliaments. The tests run are the first to confirm empirically the relationship between vote of confidence procedure and vote unity. The paper also provides a theoretical explanation for why the existence of the confidence procedure influences vote unity despite being used only rarely. The vote of confidence influences votes through the development of control mechanisms as well as the selection of party members who are more ideologically united. This study also challenges the view that electoral rules which make candidates individually accountable to voters necessarily lead to more vote defections. The findings suggest that higher personal accountability decreases vote unity only if party leaders do not control candidate nomination. Parties that rely on government finance for campaigns are also more united.

This article analyzes the impact of electoral rules on legislators’ rate of vote defection from their party position in legislatures while accounting for how party‐leadership strength mediates this impact. To this end it looks at the effect of the 2008 Romanian electoral reform. The reform shifted the electoral system from a closed‐list proportional representation to one in which all candidates run in single‐member districts. The analysis finds that because party leaders have maintained their leverage intact, the impact of the reform was minimal, with legislators being more likely to defect in less important votes only, in which party leaders allow defection. Also, after the reform legislators are more likely to use other means to impress their voters, such as legislative initiation and cabinet questioning. These forms of behavior are more accepted by party leaders.

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Objective The present study investigates developmental trajectories of alcohol use from early adolescence to adulthood by age and race/ethnicity among White, Black, Black-American Indian, Black-Hispanic, and Black-White individuals and associated sociodemograhphic correlates. Method We used a subsample of nationally representative data obtained from the National Longitudinal Study of Adolescent Health (Add Health). The analytic sample consisted of 15,278 individuals in Wave 1 (ages 11 to 21 years). The sample consists of adolescents who were in Grades 7 – 12 at wave one and who were followed across four waves of data collection into adulthood. Respondents could report more than one race/ethnicity. Results We find distinct alcohol trajectories among monoracial and biracial/ethnic Blacks with all groups showing a cross-over or catch-up effect. Black-White adults demonstrated a cross-over effect by surpassing the alcohol drinking rates of Whites in adulthood, Black-American Indians showed a within-group catch-up effect by surpassing the alcohol drinking rates of monoracial and biracial/ethnic Blacks in adulthood, and monoracial Blacks were most likely to be nondrinkers in adulthood. We also show gender, socioeconomic status, and household structure differences in impact on alcohol use among monoracial and biracial/ethnic Blacks. Conclusions Significant heterogeneity is observed regarding alcohol trajectories between monoracial and biracial/ethnic Blacks.

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