This article aims to analyze the use of Direct Actions of Unconstitutionality by political parties, in order to identify how a judicialization strategy of themes related to politics takes place in the Supreme Federal Court (STF), with the time frame of the years 2019 and 2020. Examines the phenomenon of reduced filing of lawsuits before the Constitutional Court by parties, their predominant motives, success and the theoretical debate around the losses related to separation of powers, judicialization of politics and the role of parties in the formation conflicts brought before the STF. To this end, a database and qualitative-inductive analysis were used to interpret the data, allowing us that the judicialization of politics is not only a second alternative, but an immediate way in some cases.