| Year: | 1929 |
|---|---|
| General election: | 1929 General Election |
| Constituency: | Blackburn |
| Turnout: | 82.6% |
Results
| Candidate | Party | Votes |
| Hamilton, Mary Agnes | Labour | 37256 |
| Gill, Thomas Harry | Labour | 35723 |
| Henn, Sydney Herbert Holcroft | Unionist | 35249 |
| Isaacs, Gerald Rufus | Liberal | 34504 |