INC
PDPThe table below lists Indian National Congress (INC) candidates, their total votes, vote share and final position in Ottapalam Lok Sabha Constituency in Kerala.
| Election year | Candidate Name | Votes Received | Vote Share (%) | Position | Status |
|---|---|---|---|---|---|
| 2004 | K A Thulasi | 325,518 | 40.35 | 2 | Lost |
| 1999 | Pandalam Sudhakaran | 346,043 | 44.56 | 2 | Lost |
| 1998 | Prof: K.K. Vijayalakshmi | 315,576 | 44.11 | 2 | Lost |
| 1996 | Vijayalakshmi K K | 300,958 | 44.07 | 2 | Lost |
| 1991 | K.R. Narayanan | 327,043 | 48.28 | 1 | Won |
| 1989 | K. R. Narayanan | 350,683 | 49.16 | 1 | Won |
| 1984 | K. R. Narayanan | 290,177 | 54.74 | 1 | Won |
| 1977 | K. Kunhambu | 232,412 | 54.16 | 1 | Won |