1857 General Election - Dorset
| Year | 1857 |
| General election | 1857 General Election |
| Constituency | Dorset |
| Turnout | 48.2% |
Results
| Candidate | Party | Votes |
| Portman, William Henry Berkeley | Whig | 2,430 |
| Sturt, Henry Gerard | Conservative | 2,197 |
| Seymer, Henry Ker | Conservative | 2,177 |
| Floyer, John | Conservative | 2,159 |