1929 General Election - Pontypridd
| Year | 1929 |
| General election | 1929 General Election |
| Constituency | Pontypridd |
| Turnout | 82.0% |
Results
| Candidate | Party | Votes |
| Mardy-Jones, Thomas Isaac | Labour | 20,835 |
| Evans, John Victor | Liberal | 14,421 |
| Williams, Mary Gordon | Unionist | 3,967 |