1900 General Election - Merthyr Tydfil
| Year | 1900 |
| General election | 1900 General Election |
| Constituency | Merthyr Tydfil |
| Turnout | 59.6% |
Results
| Candidate | Party | Votes |
| Thomas, David Alfred | Liberal | 8,598 |
| Hardie, James Keir | Labour Representation Committee | 5,745 |
| Morgan, William Pritchard | Liberal | 4,004 |