| Ottapidaram (S) Constituency |
| Ottapidaram(SC) Assembly Election Result 2021 | ||
| Candidate Names | Party | Votes |
| Shanmugayyaa | DMK (WON) | 73110 |
| P.Mohan | ADMK | 64600 |
| S. Arumuga Nainar | DMDK | 5327 |
| C.Arunadevi | IJK | 1913 |
| Subbulakshmi | NTK | 22413 |
| Ottapidaram Constituency Population - 2021 | |||
| Male | Female | Transgender | Total |
| 1,22,372 | 1,27,653 | 28 | 2,50,053 |
| Tamil Nadu Ministers List - 2021 |
| Full Details of Tamil Nadu Ministers 2021 |
| 2019 By Election Candidate List | ||
| Name | Party | Votes |
| M.C.Shanmugaiah | DMK (Won) | 73241 |
| Mohan | ADMK | 53584 |
| R.Sundararaj | AMMK | 29228 |
| 2016 Election Result | ||
| Name | Party | Votes |
| R Sundararaj | ADMK (Won) | 65,071 |
| Krishnasamy | PT | 64,578 |
| Arumuganainar.S | DMDK | 14,127 |
| 2011 Election Result | ||
| Name | Party | Votes |
| Dr.K.Krishnasamy (Winner) | PT | 71,330 |
| S.Raja(Runner Up) | DMK | 46,204 |
| Ottapidaram (SC) Constituency | ||
| MLA Name | Duration | Parties |
| A. L. Ramakrishna Naicker | 1962 | INC |
| M. Muthiah | 1967 | SP |
| M. Muthiah | 1971 | FBL |
| O. S. Veluchami | 1977 | INC |
| M. Appadurai | 1980 | CPI |
| R. S. Arumugam | 1984 | INC |
| M. Muthiah | 1989 | DMK |
| S. X. Rajamannar | 1991 | ADMK |
| K. Krishnasamy | 1996 | JP |
| A. Sivaperumal | 2001 | ADMK |
| P. Mohan | 2006 | ADMK |
| Dr. K. Krishnaswamy | 2011 | PT |
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