Background In 2017, the
National Congress of Brazil approved a constitutional amendment which abolished legislative coalitions and established an
electoral threshold to receive
party subsidies. 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. In 2021, it was approved the creation of party federations, based on the
Broad Front model. After the federations approved, there began talks to form left-of-center federations, which began official talks to form a federation between the Workers' Party, the
Brazilian Socialist Party (PSB), the
Socialism and Liberty Party (PSOL), the Communist Party of Brazil and the Green Party in late 2021. PSOL quickly left the negotiations, preferring to focus on a federation with the
Sustainability Network (REDE). Negotiations between PT and PSB got into advanced stages, with a broad majority of PSB politicians wanting to join the PT-lead federation, but PSB withdrew from the federation because of disagreements over São Paulo, especially due to the gubernatorial and mayoral candidates.
Formation In April 2022, PT, PCdoB and PV approved a federation and subsequently sent it to the
Superior Electoral Court. It was approved and the federation was officially formed. ==Composition==