| Orathanadu Constituency |
| Orathanadu Assembly Election Result 2021 | ||
| Candidate Names | Party | Votes |
| Vaithiyalingam | ADMK(Won) | 90063 |
| Ramachandran | DMK | 61228 |
| M.Sekar | AMMK | 23022 |
| Rangaswamy | MNM | 721 |
| Kanthasami | NTK | 9050 |
| Orathanadu Constituency Population - 2021 | |||
| Male | Female | Transgender | Total |
| 1,18,112 | 1,24,892 | 10 | 2,43,014 |
| Tamil Nadu Ministers List - 2021 |
| Full Details of Tamil Nadu Ministers 2021 |
| 2016 Election Result | ||
| Name | Party | Votes |
| Ramchandran.M | DMK (WON) | 84378 |
| R. Vaithilingam | AIADMK | 80733 |
| Ramanathan. P | DMDK | 6351 |
| 2011 Election Result | ||
| Name | Party | Votes |
| R. Vaithilingam (Winner) | AIADMK | 91,724 |
| T.Mahesh Krishanasamy (Runner UP) | DMK | 59,080 |
| Orathanadu Constituency | ||
| MLA Name | Duration | Parties |
| L. Ganesan | 1971 | DMK |
| T. M. Thailappan | 1977 | DMK |
| T. Veeraswamy | 1980 | INC |
| T. Veeraswamy | 1984 | ADMK |
| L. Ganesan | 1989 | DMK |
| Alagu. Thirunavukkarasu | 1991 | ADMK |
| P. Rajamanickam | 1996 | DMK |
| R. Vaithilingam | 2001 | ADMK |
| R. Vaithilingam | 2006 | ADMK |
| R. Vaithilingam | 2011 | ADMK |
JB Soft System