1929 General Election - Portsmouth South
| Year | 1929 |
| General election | 1929 General Election |
| Constituency | Portsmouth South |
| Turnout | 75.1% |
Results
| Candidate | Party | Votes |
| Cayzer, Herbert Robin | Unionist | 15,068 |
| Stephen, Jessie | Labour | 10,127 |
| Privett, Frank John | Independent Unionist | 9,505 |
| Rudkin, Charles Mark Clement | Liberal | 6,214 |