[3][4][5] In 2017, the National Congress of Brazil approved a constitutional amendment which abolished legislative coalitions and established an electoral threshold to receive party subsidies.

[6] The electoral reform aimed to decrease the effective number of parties in Brazil.

After the reform, smaller parties wanted to create a new mechanism to help them win seats, with many proposing single non-transferable vote.

[8] PSOL quickly left the negotiations, preferring to focus on a federation with the Sustainability Network (REDE).

[10] In April 2022, PT, PCdoB and PV approved a federation and subsequently sent it to the Superior Electoral Court.