1966 General Election - Southend East
| Year | 1966 |
| General election | 1966 General Election |
| Constituency | Southend East |
| Turnout | 76.9% |
Results
| Candidate | Party | Votes |
| McAdden, Stephen | Conservative | 19,125 |
| Clyne, Peter | Labour | 18,608 |
| Baynes, Keith | Liberal | 4,495 |
| Year | 1966 |
| General election | 1966 General Election |
| Constituency | Southend East |
| Turnout | 76.9% |
| Candidate | Party | Votes |
| McAdden, Stephen | Conservative | 19,125 |
| Clyne, Peter | Labour | 18,608 |
| Baynes, Keith | Liberal | 4,495 |