1841 General Election - South Northamptonshire
| Year | 1841 |
| General election | 1841 General Election |
| Constituency | South Northamptonshire |
| Turnout | 61.9% |
Results
| Candidate | Party | Votes |
| Cartwright, William Ralph | Conservative | 2,436 |
| Knightley, Charles | Conservative | 2,324 |
| FitzRoy, Henry | Whig | 925 |