Does the Before Influence the After?

Executive Summary

Problem and purpose

The article examines a central question for the study of the Brazilian Federal Supreme Court (STF): do characteristics that precede appointment influence justices' behavior after they join the Court? The question matters because the STF plays a central role in Brazilian democracy, while systematic evidence about how professional trajectories become decision-making patterns remains limited.

Approach and data

The study builds a typology of justices' previous careers and analyzes Ação Penal 470, the criminal case known as Mensalão. The case allows the authors to observe individual votes in a highly salient decision. The empirical strategy uses logistic regression models to estimate the association between professional profiles and votes to convict or acquit.

Main findings

The results indicate that legal expertise, pathways of professional advancement, political dependence or stability, and types of interests previously represented by justices help explain differences in judicial behavior. The argument is that justices do not arrive at the Court as blank slates: they bring legal interpretations, worldviews and professional repertoires developed before nomination.

Contribution

The article contributes to two research agendas: judicial behavior and appointments to constitutional courts. If previous trajectories influence later votes, then appointment processes to the STF should be analyzed not only as the selection of individuals, but as the selection of institutional profiles with possible consequences for future decisions.