| Name | Abbr. | Leader(s) | Ideology | Reg. | Elections | Note | |
|---|---|---|---|---|---|---|---|
| Humanist Party Partido Humanista |
PH | Valdomiro dos Santos Filho | Universal humanism Socialism |
1985 | 1985, 1986, 1988 | ||
| National Humanist Party Partido Humanista Nacional |
PHN | Luiz Paulino | 1988 | 1988 | |||
| Communist Party Partido Comunista |
PC | Horácio Macedo | Communism | 1992 | 1992 | ||