# Dehiwala-Mount Lavinia Electoral District

Dehiwala-Mount Lavinia electoral district, later renamed Dehiwala was an electoral district of Sri Lanka between March 1960 and February 1989. The district was named after the city of Dehiwala-Mount Lavinia in Colombo District, Western Province. The 1978 Constitution of Sri Lanka introduced the proportional representation electoral system for electing members of Parliament. The existing 160 mainly single-member electoral districts were replaced with 22 multi-member electoral districts. Dehiwala-Mount Lavinia electoral district was replaced by the Colombo multi-member electoral district at the 1989 general elections.

## Members of Parliament

Key
Independent SLFP UNP
| Election | Member | Party | Term |
| 1960 (March) | S. de Silva Jayasinghe | UNP | 1960-1960 |
| 1960 (July) | Colvin R. de Silva | LSSP | 1960-1965 |
| 1965 | S. de Silva Jayasinghe | UNP | 1965-1970 |
| 1970 | Vivienne Goonewardena | LSSP | 1970-1977 |
| 1977 | S. de Silva Jayasinghe | UNP | 1977-1977 |
| 1977 (by election) | Sunethra Ranasinghe | UNP | 1977-1989 |

## Elections
### 1960 (March) Parliamentary General Election

Results of the 4th parliamentary election held on 19 March 1960 for the district:
| Candidate | Party | Symbol | Votes | % |
| S. de Silva Jayasinghe | | Elephant | 12,971 | 40.88 |
| Colvin R. de Silva | | Key | 8,599 | 27.10 |
| Andrew Fernando | | Hand | 6,378 | 20.10 |
| K. K. A. E. Britto | | Star | 3,222 | 10.15 |
| T. D. L. Aponso | | Umbrella | 420 | 1.32 |
| Valid Votes | Valid Votes | Valid Votes | 31,590 | 99.56 |
| Rejected Votes | Rejected Votes | Rejected Votes | 140 | 0.44 |
| Total Polled | Total Polled | Total Polled | 31,730 | 100.00 |
| Registered Electors | Registered Electors | Registered Electors | 43,172 | |
| Turnout | Turnout | Turnout | Turnout | 73.50 |

### 1960 (July) Parliamentary General Election

Results of the 5th parliamentary election held on 20 July 1960 for the district:
| Candidate | Party | Symbol | Votes | % |
| Colvin R. de Silva | | Key | 16,002 | 51.36 |
| S. de Silva Jayasinghe | | Elephant | 14,892 | 47.80 |
| D. B. de S. Jayawardena | | Rabbit | 156 | 0.50 |
| Valid Votes | Valid Votes | Valid Votes | 31,050 | 99.65 |
| Rejected Votes | Rejected Votes | Rejected Votes | 108 | 0.35 |
| Total Polled | Total Polled | Total Polled | 31,158 | 100.00 |
| Registered Electors | Registered Electors | Registered Electors | 43,172 | |
| Turnout | Turnout | Turnout | Turnout | 72.17 |

### 1965 Parliamentary General Election

Results of the 6th parliamentary election held on 22 March 1965 for the district:
| Candidate | Party | Symbol | Votes | % |
| S. de Silva Jayasinghe | | Elephant | 24,652 | 53.19 |
| Colvin R. de Silva | | Key | 21,363 | 46.10 |
| Somadasa Siriwardhana | | Cartwheel | 248 | 0.54 |
| Valid Votes | Valid Votes | Valid Votes | 46,263 | 99.83 |
| Rejected Votes | Rejected Votes | Rejected Votes | 81 | 0.17 |
| Total Polled | Total Polled | Total Polled | 46,344 | 100.00 |
| Registered Electors | Registered Electors | Registered Electors | 56,366 | |
| Turnout | Turnout | Turnout | Turnout | 82.22 |

### 1970 Parliamentary General Election

Results of the 7th parliamentary election held on 27 May 1970 for the district:
| Candidate | Party | Symbol | Votes | % |
| Vivienne Goonewardena | | Key | 29,430 | 51.63 |
| S. de Silva Jayasinghe | | Elephant | 27,463 | 48.18 |
| Valid Votes | Valid Votes | Valid Votes | 56,893 | 98.81 |
| Rejected Votes | Rejected Votes | Rejected Votes | 106 | 0.19 |
| Total Polled | Total Polled | Total Polled | 56,999 | 100.00 |
| Registered Electors | Registered Electors | Registered Electors | 70,236 | |
| Turnout | Turnout | Turnout | Turnout | 81.15 |

### 1977 Parliamentary General Election

Results of the 8th parliamentary election held on 21 July 1977 for the district:
| Candidate | Party | Symbol | Votes | % |
| S. de Silva Jayasinghe | United National Party | Elephant | 22,364 | 61.44 |
| Vithanage Don Alfred Perera | Sri Lanka Freedom Party | Hand | 9,996 | 27.46 |
| Ananda Premasinghe | Lanka Sama Samaja Party | Key | 3,578 | 9.83 |
| T. Upali Cooray | | Bell | 402 | 1.10 |
| Valid Votes | Valid Votes | Valid Votes | 36,340 | 99.84 |
| Rejected Votes | Rejected Votes | Rejected Votes | 60 | 0.17 |
| Total Polled | Total Polled | Total Polled | 36,400 | 100.00 |
| Registered Electors | Registered Electors | Registered Electors | 45,693 | |
| Turnout | Turnout | Turnout | Turnout | 79.66 |

### 1977 Parliamentary By Election

Results of the Ceylonese parliamentary by-election, held on 11 November 1977:
| Candidate | Party | Symbol | Votes | % |
| Sunethra Rupasinghe | United National Party | Elephant | 18,279 | 62.75 |
| Vithanage Don Alfred Perera | Sri Lanka Freedom Party | Hand | 7,795 | 26.76 |
| Ananda Premasinghe | Lanka Sama Samaja Party | Key | 2,753 | 9.45 |
| Asoka Atapattu | | Lamp | 1,386 | 4.76 |
| Valid Votes | Valid Votes | Valid Votes | 28,965 | 99.44 |
| Rejected Votes | Rejected Votes | Rejected Votes | 163 | 0.56 |
| Total Polled | Total Polled | Total Polled | 29,128 | 100.00 |
| Registered Electors | Registered Electors | Registered Electors | 45,693 | |
| Turnout | Turnout | Turnout | Turnout | 63.75 |