1857 General Election - Middlesex
| Year | 1857 |
| General election | 1857 General Election |
| Constituency | Middlesex |
| Turnout | 45.7% |
Results
| Candidate | Party | Votes |
| Hanbury, Robert Culling | Whig | 5,426 |
| Grosvenor, Robert | Whig | 5,327 |
| Cadogan, Henry Charles | Conservative | 2,928 |