# 1958 Brazilian parliamentary election

Parliamentary elections were held in Brazil on 3 October 1958. Voter turnout was 92%.

## Results
### Chamber of Deputies

| Party or alliance | Party or alliance | Party or alliance | Party or alliance | Votes | % | Seats |
| | Social Democratic Party (PSD) | Social Democratic Party (PSD) | Social Democratic Party (PSD) | 2,296,640 | 19.94 | 69 |
| | Brazilian Labour Party (PTB) | Brazilian Labour Party (PTB) | Brazilian Labour Party (PTB) | 1,830,621 | 15.89 | 46 |
| | National Democratic Union (UDN) | National Democratic Union (UDN) | National Democratic Union (UDN) | 1,644,314 | 14.27 | 43 |
| | Republican Party (PR) | Republican Party (PR) | Republican Party (PR) | 583,220 | 5.06 | 14 |
| | Christian Democratic Party (PDC) | Christian Democratic Party (PDC) | Christian Democratic Party (PDC) | 313,635 | 2.72 | 6 |
| | Social Progressive Party (PSP) | Social Progressive Party (PSP) | Social Progressive Party (PSP) | 291,761 | 2.53 | 7 |
| | Popular Representation Party (PRP) | Popular Representation Party (PRP) | Popular Representation Party (PRP) | 179,589 | 1.56 | 2 |
| | Liberator Party (PL) | Liberator Party (PL) | Liberator Party (PL) | 120,956 | 1.05 | 2 |
| | Social Labour Party (PST) | Social Labour Party (PST) | Social Labour Party (PST) | 115,365 | 1.00 | 2 |
| | Coalitions | | PSP–PSD–PRT [pt] | 897,271 | 7.79 | 135 |
| | Coalitions | | PSB–PTN | 549,302 | 4.77 | 135 |
| | Coalitions | | PSD–PTB–PRP | 320,022 | 2.78 | 135 |
| | Coalitions | | PSD–PDC–PL–PRP–PST | 307,079 | 2.67 | 135 |
| | Coalitions | | PSD–PRP | 275,247 | 2.39 | 135 |
| | Coalitions | | UDN–PSP–PRT [pt]–PR–PTN | 266,173 | 2.31 | 135 |
| | Coalitions | | PTB–PSB–PDC–PR | 213,015 | 1.85 | 135 |
| | Coalitions | | UDN–PTB–PSP–PTN–PSB | 205,916 | 1.79 | 135 |
| | Coalitions | | PSD–PSB–PRT [pt]–PR–PTN–PL | 131,324 | 1.14 | 135 |
| | Coalitions | | UDN–PTB | 99,983 | 0.87 | 135 |
| | Coalitions | | PSD–PR–PSP–PRP | 97,215 | 0.84 | 135 |
| | Coalitions | | UDN–PL | 89,707 | 0.78 | 135 |
| | Coalitions | | UDN–PDC–PR | 90,104 | 0.78 | 135 |
| | Coalitions | | UDN–PST–PTN | 87,864 | 0.76 | 135 |
| | Coalitions | | UDN–PR–PSP | 85,569 | 0.74 | 135 |
| | Coalitions | | UDN–PSP | 76,331 | 0.66 | 135 |
| | Coalitions | | PSD–PTB | 77,454 | 0.67 | 135 |
| | Coalitions | | UDN–PST | 58,434 | 0.51 | 135 |
| | Coalitions | | UDN–PRP | 55,529 | 0.48 | 135 |
| | Others | Others | Others | 159,418 | 1.38 | 135 |
| Total | Total | Total | Total | 11,519,058 | 100.00 | 326 |
| Valid votes | Valid votes | Valid votes | Valid votes | 11,519,058 | 90.85 | |
| Invalid/blank votes | Invalid/blank votes | Invalid/blank votes | Invalid/blank votes | 1,159,939 | 9.15 | |
| Total votes | Total votes | Total votes | Total votes | 12,678,997 | 100.00 | |
| Registered voters/turnout | Registered voters/turnout | Registered voters/turnout | Registered voters/turnout | 13,780,480 | 92.01 | |
| Source: Nohlen |||||||

### Senate

| Party | Party | Votes | % | Seats |
| | Social Democratic Party | 1,123,574 | 10.62 | 6 |
| | National Democratic Union | 856,846 | 8.10 | 8 |
| | Brazilian Labour Party | 688,880 | 6.51 | 6 |
| | National Labor Party | 245,872 | 2.32 | 0 |
| | Social Progressive Party | 244,863 | 2.31 | 0 |
| | Social Labour Party | 236,451 | 2.23 | 0 |
| | Brazilian Socialist Party | 59,201 | 0.56 | 1 |
| | Republican Party | 21,237 | 0.20 | 0 |
| | Coalitions | 7,104,129 | 67.14 | – |
| Total | Total | 10,581,053 | 100.00 | 21 |
| Valid votes | Valid votes | 10,581,053 | 83.68 | |
| Invalid/blank votes | Invalid/blank votes | 2,063,614 | 16.32 | |
| Total votes | Total votes | 12,644,667 | 100.00 | |
| Registered voters/turnout | Registered voters/turnout | 13,743,677 | 92.00 | |
| Source: Nohlen |||||