| Rajapalayam Constituency |
| Rajapalayam Assembly Election Result 2021 | ||
| Candidate Names | Party | Votes |
| Thangapandiyan | DMK (WON) | 74158 |
| Rajendra Balaji | ADMK | 70260 |
| K.Kalimuthu | AMMK | 7660 |
| Vivekanandhan | SMK | 4059 |
| Jeyaraj | NTK | 15593 |
| Rajapalayam Constituency Population - 2021 | |||
| Male | Female | Transgender | Total |
| 1,16,258 | 1,22,414 | 29 | 2,38,701 |
| Tamil Nadu Ministers List - 2021 |
| Full Details of Tamil Nadu Ministers 2021 |
| 2016 Election Result | ||
| Name | Party | Votes |
| Thangappandian. S. | DMK (WON) | 74787 |
| Shyam, A.A.S. | ADMK | 69985 |
| GURUSAMY. A. | CPM | 12505 |
| 2011 Election Result | ||
| Name | Party | Votes |
| K.Gopalsamy | AIADMK | 80,125 |
| S.Thangapandian(Runner Up) | DMK | 58,693 |
| Rajapalayam Constituency | ||
| MLA Name | Duration | Parties |
| R. Krishnasami | 1962 | INC |
| A. A. S. Raja | 1967 | Independent |
| K. Suppu | 1971 | CPI |
| K. Dhanuskodi | 1977 | AIADMK |
| P. Mokkian | 1980 | Independent |
| K. Raman | 1984 | INC |
| V. P. Rajan | 1989 | DMK |
| T. Sathiah | 1991 | AIADMK |
| V. P. Rajan | 1996 | DMK |
| M. Rajasekar | 2001 | AIADMK |
| M. Chandra | 2006 | AIADMK |
| K.Gopalsamy | 2011 | AIADMK |
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