This paper presents the results of an empirical investigation into the moral-democratic competence of a sample of 44 members of parliament from Rio Grande do Sul (state deputies, federal deputies, and senators). The research used the Moral Judgment Test, extended version (MJT-xt), an adaptation of George Lind's original instrument, to assess the participants' ability to judge and argue about moral dilemmas. Three moral dilemmas were applied and the respondents' responses, which included arguments for and against the actions of the protagonists of the dilemmas, were used to calculate an individual moral-democratic competence score (C-Score). The findings revealed an average C-Score of 17 points in the sample, indicating a low level of moral-democratic competence among the members of parliament. Notably, no statistically significant differences were observed in relation to the independent variables such as the political ideological orientation declared by the participants. These results suggest considerable challenges for the consolidation of democratic values in the Brazilian context, highlighting the importance of deepening the understanding of the factors that influence moral-democratic competence in political leaders.