1955 General Election - Orpington
| Year | 1955 |
| General election | 1955 General Election |
| Constituency | Orpington |
| Turnout | 79.4% |
Results
| Candidate | Party | Votes |
| Sumner, William Donald Massey | Conservative | 22,166 |
| Hart, Norman John | Labour | 10,230 |
| Howard, Alfred | Liberal | 4,610 |