1857 General Election - Canterbury
| Year | 1857 |
| General election | 1857 General Election |
| Constituency | Canterbury |
| Turnout | 54.7% |
Results
| Candidate | Party | Votes |
| Butler-Johnstone, Henry | Conservative | 815 |
| Somerville, William Meredyth | Whig | 759 |
| Cooper, Charles Purton | Whig | 477 |