1857 General Election - Londonderry
| Year | 1857 |
| General election | 1857 General Election |
| Constituency | Londonderry |
| Turnout | 63.2% |
Results
| Candidate | Party | Votes |
| Clark, James Johnston | Conservative | 2,404 |
| Greer, Samuel MacCurdy | Radicals | 2,339 |
| Bruce, Henry Hervey | Conservative | 1,676 |