1931 General Election - Portsmouth South
| Year | 1931 |
| General election | 1931 General Election |
| Constituency | Portsmouth South |
| Turnout | 72.7% |
Results
| Candidate | Party | Votes |
| Cayzer, Herbert Robin | Conservative | 32,634 |
| Beck, WJ | Labour | 7,715 |
| Year | 1931 |
| General election | 1931 General Election |
| Constituency | Portsmouth South |
| Turnout | 72.7% |
| Candidate | Party | Votes |
| Cayzer, Herbert Robin | Conservative | 32,634 |
| Beck, WJ | Labour | 7,715 |