The parliamentary ethics councils are the target of criticism because they are composed of parliamentarians who are responsible for judging other parliamentarians, a situation that can generate conflict of interest. This article proposes to analyze the occurrence or not of these conflicts, based on the Case Study of the Council of Ethics and Parliamentary Decorum of the Chamber of Deputies of Brazil, mapping the actions of political parties and the deputies that integrate them through methods of Descriptive Statistics and development of an unprecedented database. The results showed that there is a tendency to spare allies and attack political opponents, suggesting the competition of personal interests with the public interest, which can characterize conflict of interests, opening the way for the discussion of new alternative models of councils.
