1847 General Election - Longford
| Year | 1847 |
| General election | 1847 General Election |
| Constituency | Longford |
| Turnout | 64.2% |
Results
| Candidate | Party | Votes |
| Blackall, Samuel Wensley | Repeal Association | 447 |
| Fox, Richard Maxwell | Repeal Association | 433 |
| Lefroy, Anthony | Conservative | 352 |
| King-Harman, Lawrence Harman | Conservative | 323 |