This dissertation has as its theme the crisis of current Braziliam democracy and aims to understand its nature. Through an interdisciplinary approach that unites Political Theory and Political Science to Constitutional Law, giving a central relevance to the theoretical studies of the Italian political scientist Nadia Urbinati on modes of governability that disfigure representative democracy, namely, anti-politics, populism and plebiscitary. , the bibliographic research seeks, through a hypothetical-deductive methodology, to interpret and understand the current phase of the third Brazilian republic, under the order of the 1988 Constitution, which began after the disruptive general elections of 2018. In this sense, I suggest, based on recent studies, that after a brief period that started in 2019 with the mark of a government movement characterized not only by the three democratic disfigurements conceived by Urbinati but also by tests of institutional rupture, the elected government in 2018 ends up surrendering to the mechanisms of a coalition government. In the end, we conclude that democratic disfigurements (anti-political, populist, and plebiscitary), or threats of authoritarian institutional rupture, have been contained by the pressures of the National Congress, with all its licit and potentially illicit costs, for the exercise of freedom press, by pressure from public opinion, as well as by the balance exercised by the Judiciary, in its role in the game of separation of powers, but they did not prevent the creation of an environment of constitutional degradation (constitutional rot), according to Jack Balkin s conceptualization exposed in the dissertation.