Democracia Lab
Parties
Parties that place themselves on the left, by self-definition in their statute or program and by the political science literature. The list is descriptive, not a Democracia Lab classification.
- PT13Partido dos Trabalhadores66 federal deputies9 senators
- PSOL50Partido Socialismo e Liberdade13 federal deputies0 senators
- PCdoB65Partido Comunista do Brasil11 federal deputies0 senators
- PSB40Partido Socialista Brasileiro17 federal deputies7 senators
- PDT12Partido Democrático Trabalhista9 federal deputies1 senators
- PV43Partido Verde6 federal deputies0 senators
- REDE18Rede Sustentabilidade3 federal deputies0 senators
- PCB21Partido Comunista Brasileiro0 federal deputies0 senators
- UP80Unidade Popular0 federal deputies0 senators
Other parties that describe themselves as socialist or communist
Source: Superior Electoral Court (TSE) · Registered partiesLast updated: 31/10/2026 – 15:00See original data ↗
Source: Chamber of Deputies · Open DataLast updated: 01/11/2026 – 16:06See original data ↗
Source: Federal Senate · Open DataLast updated: 01/11/2026 – 14:06See original data ↗