
| Year | Winner | Vote Share | Runner Up | Runner Up Vote Share | Vote Margin |
|---|---|---|---|---|---|
| 2004 | Lonappan NambadanCPM | 51.89% | Padmaja VenugopalINC | 35.69 | 16.2 |
| 1999 | K. KarunakaranINC | 50.56% | E.m. SreedharanCPM | 43.88 | 6.68 |
| 1998 | A.c. JoseINC | 46.71% | P. GovindappillaiCPM | 45.5 | 1.2 |
| 1996 | P. C.chackoINC | 47.81% | V.viswanatha MenonCPM | 44.43 | 3.38 |
| 1991 | Savithri Lakshmanan (w)INC | 48.32% | A.p. KurianCPM | 46.67 | 1.65 |
| 1989 | Savithri LakshmananINC | 48.77% | C. O. Poulose MasterCPM | 46.28 | 2.49 |
| 1984 | K. MohandasKEC(J) | 51.44% | M. M. LawrenceCPM | 43.59 | 7.86 |
| 1980 | BalanandanCPM | 56.73% | C.g. KumaranIND | 40.47 | 16.26 |
| 1977 | A. C. GeorgeINC | 48.53% | S. C. S. MenonIND | 47.62 | 0.91 |
| 1971 | A. C. GeorgeINC | 58.08% | C. O. PaulCPM | 38.52 | 19.56 |
| 1967 | P. G. MenonINC | 49.75% | C. G. JanardhananIND | 48.24 | 1.51 |
| 1962 | Govinda Menon PanampilliINC | 54.1% | Narayankutty Menon ThekkechalilCPI | 43.44 | 10.67 |