PONNANI
P. T. Mohanakrishnan (Cong-I) declared elected by a margin of 2133 votes.
Total electorate: 119337
Votes polled: 95776
| Name of the Candidate | Party | Votes |
| P. T. Mohanakrishnan | Cong-I | 44432 |
| E. K. Imbichibava | CPIM | 42299 |
| T. N. Baharathan | BJP | 7109 |
| Ind | 2 | 826 |
| K. Unni | CMP | 232 |
| Invalid: | 878 |
In 1982, M. P. Gangadharan (Cong-I) won by a margin of 93 votes.
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