Bolivia held a parliamentary election on 1 May 1949, electing a new National Congress (for half the seats of the Deputies and 1/3 the seats of the Senators).
| Party/Alliance | Votes | % | Senate (1949) | Deputies (1949) | Senate (total) | Deputies (total) | Total | |
|---|---|---|---|---|---|---|---|---|
| Republican Socialist Unity Party | PURS | ?? | ?? | 06 | 28 | 14 | 56 | 70 |
| Nationalist Revolutionary Movement | MNR | ?? | ?? | 01 | 09 | 01 | 09 | 10 |
| Revolutionary Left Party | PIR | ?? | ?? | 02 | 05 | 04 | 21 | 25 |
| Liberal Party | PL | ?? | ?? | 00 | 02 | 06 | 09 | 15 |
| independents | ?? | ?? | 00 | 04 | 00 | 10 | 10 | |
| Social Democratic Party | PSD | ?? | ?? | 00 | 01 | 00 | 02 | 02 |
| Bolivian Socialist Falange | FSB | ?? | ?? | 00 | 01 | 00 | 01 | 01 |
| others | ?? | ?? | 00 | 06 | 02 | 03 | 05 | |
| Valid votes | ?? | ?? | 09 | 56 | 27 | 111 | 138 | |
| Invalid votes | ??? | |||||||
| Votes cast | ??? | |||||||
| Registered voters | ??? | |||||||
| Population | ??? | |||||||
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