1929 General Election - South Dorset
| Year | 1929 |
| General election | 1929 General Election |
| Constituency | South Dorset |
| Turnout | 75.5% |
Results
| Candidate | Party | Votes |
| Cranborne, Viscount | Unionist | 14,632 |
| Plaistowe, Cuthbert | Liberal | 8,168 |
| Wiltshire, Arthur William | Labour | 6,950 |