1868 General Election - South Northamptonshire
| Year | 1868 |
| General election | 1868 General Election |
| Constituency | South Northamptonshire |
| Turnout | 57.8% |
Results
| Candidate | Party | Votes |
| Knightley, Rainald | Conservative | 2,522 |
| Cartwright, Fairfax William | Conservative | 2,505 |
| FitzRoy, Frederick John | Liberal | 2,305 |