Lanka Sama Samaja Party Electoral results Lanka Sama Samaja Party 
 electoral results

| Date_ | Candidates_nominated | Candidates_elected | Votes | _of_national_vote |
|---|---|---|---|---|
| 1947 | 28 | 10 | 204020 | 10.81 |
| 1952 | 39 | 9 | 305133 | 13.11 |
| 1956 | 21 | 14 | 274204 | 11.47 |
| 1960 March | 101 | 10 | 325286 | 11.26 |
| 1960 July | 21 | 12 | 224995 | 7.96 |
| 1965 | 25 | 10* | 302095 | 7.90 |
| 1970 | 23 | 19 | 433224 | 8.68 |
| 1977 | 82 | 0 | 225317 | 3.61 |