| Nilakkottai(S) Constituency |
| Nilakkottai(SC) Assembly Election Result 2021 | ||
| Candidate Names | Party | Votes |
| S. ThenmozhI | ADMK (Won) | 91461 |
| Murugavelrajan | DMK | 63843 |
| K. Ramasamy | DMDK | 3704 |
| Vasantha Devi | NTK | 17505 |
| Nilakkottai Constituency Population - 2021 | |||
| Male | Female | Transgender | Total |
| 1,19,204 | 1,23,649 | 10 | 2,42,863 |
| Tamil Nadu Ministers List - 2021 |
| Full Details of Tamil Nadu Ministers 2021 |
| 2019 By Election Candidate List | ||
| Name | Party | Votes |
| Thenmozhi | ADMK (Won) | 90982 |
| Soundhara Pandiyan | DMK | 70307 |
| Thangathurai | AMMK | 9401 |
| 2016 Election Result | ||
| Name | Party | Votes |
| Thangathurai R | ADMK (WON) | 85507 |
| Anbazhagan M | DMK | 70731 |
| Ramaswamy K | DMDK | 7666 |
| 2011 Election Result | ||
| Name | Party | Votes |
| A. Ramasamy (Winner) | PT | 75,124 |
| Rajangam.K. (Runner UP) | INC | 50,410 |
| Nilakkottai(S) Constituency | ||
| MLA Name | Duration | Parties |
| Ayyanar and Muthu Thevar | 1952 | INC |
| W. P. A. R. Chandrasekaran and A. S. Ponnamma | 1957 | INC |
| Abdul Aziz | 1962 | INC |
| A. Muniyandi | 1967 | DMK |
| A. Muniyandi | 1971 | DMK |
| A. Baluchamy | 1977 | ADMK |
| A. S. Ponnammal | 1980 | Independent |
| A. Baluchamy | 1984 | ADMK |
| A. S. Ponnammal | 1989 | INC |
| A. S. Ponnammal | 1991 | INC |
| A. S. Ponnammal | 1996 | TMC M |
| G. Anbazhagan | 2001 | ADMK |
| S. Thenmozhi | 2006 | ADMK |
| A. Ramasamy | 2011 | PT |
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