14 elections on record · ADMK dominant · 14 total
Radhapuram is an Assembly constituency in Tamil Nadu. It has participated in 14 elections from 1962 to 2026. ADMK is the historically dominant party with 6 wins out of 14 elections.
| Year | Winner | Party | Votes | Vote % | Runner-up | Party | Margin |
|---|---|---|---|---|---|---|---|
| 2026 | Sathish Christopher | TVK | 69947 | 34.99% | M. Appavu | DMK | 12313 |
| 2021 | M. Appavu | DMK | 82331 | 43.95% | I.S. Inbudurai | ADMK | 5925 |
| 2016 | I. S. Inbadurai | ADMK | 69590 | 40.62% | M. Appavu | DMK | 104 |
| 2011 | S. Michael Rayappan | DMDK | 67072 | 48.36% | P. Veldurai. | INC | 21475 |
| 2006 | N. Suresh Rajan | DMK | 63181 | 50.31% | Thalavai Sundaram | ADMK | 10687 |
| 2001 | N. Thalavaisundaram | AIADMK | 55650 | 51.32% | N. Sureshrajan | DMK | 9536 |
| 1996 | N. Suresh Rajan | DMK | 42755 | 43.63% | S. Thanu Pillai | ADMK | 21863 |
| 1991 | M. Ammamuthu | ADMK | 54194 | 60.14% | C. Krishnan | DMK | 34359 |
| 1989 | K. Subramonia Pillai | DMK | 33376 | 34.65% | V. Aurmugham Pillai | INC | 2339 |
| 1984 | K. Perumal Pillai | AIADMK | 45353 | 54.05% | Sankaraligom. M. | DMK | 7657 |
| 1980 | S. Muthukrishnan | AIADMK | 35613 | 47.58% | Mathevan Pillai. A. | INC | 7098 |
| 1977 | C. Krishnan | AIADMK | 23222 | 33.32% | T. C. Subramaniya Pillai | INC | 7212 |
| 1971 | K. Rajah Pillai | DMK | 35884 | 51.1% | Mahadevan Pillai B. | INC | 4558 |
| 1967 | B. M. Pillai | INC | 37998 | 56.89% | S. M. Pillai | SWA | 9738 |
| 1962 | — Pre-delimitation / data unavailable | ||||||