15 elections on record · DMK dominant · 15 total
Chengalpattu is an Assembly constituency in Tamil Nadu. It has participated in 15 elections from 1962 to 2026. DMK is the historically dominant party with 8 wins out of 15 elections.
| Year | Winner | Party | Votes | Vote % | Runner-up | Party | Margin |
|---|---|---|---|---|---|---|---|
| 2026 | S. Thiyagarajan | TVK | 137136 | 42.32% | M. K. T. Karthik Dhandapani | DMK | 35641 |
| 2021 | M. Varalakshmi | DMK | 130573 | 47.64% | M. Gajendran | ADMK | 26665 |
| 2016 | M. Varalakshmi | DMK | 112675 | 45.11% | Kamalakkannan R | ADMK | 26292 |
| 2011 | D. Murugesan | DMDK | 83297 | 44.58% | V. G. Rangasamy | PMK | 291 |
| 2006 | M. Jagan Moorthy | DMK | 66338 | 47.17% | S. Ravi | ADMK | 7556 |
| 2001 | K. Bhavani Karunakaran | AIADMK | 67034 | 55.09% | R. Ravishankar | DMK | 20256 |
| 1996 | R. Thamizh Chelvan | DMK | 70550 | 58.13% | R. Elumalai | PMK | 46820 |
| 1991 | Lata Priyakumar | INC | 61314 | 55.24% | G. Mani | DMK | 30982 |
| 1989 | V. K. Raju | DMK | 42511 | 46.78% | P. Rajakumar | INC | 21973 |
| 1984 | V. K. Raju | DMK | 52657 | 52.24% | M. Vijayasarathy | AIADMK | 6313 |
| 1980 | M. Vijayasarathy | AIADMK | 36314 | 48.84% | Jayaraj. G | INC | 921 |
| 1977 | V. K. Raju | AIADMK | 24630 | 33.5% | A. Kannayiram | DMK | 7589 |
| 1971 | Durai Murugan | DMK | 37487 | 57.79% | Dhandayuthapani | INC | 16568 |
| 1967 | G. Natarajan | DMK | 32952 | 53.06% | P. S. R. Naidu | INC | 7920 |
| 1962 | B. Rajagopal Naidu | INC | 26389 | 44.19% | Natarajan | DMK | 5679 |