| Katpadi Constituency |
| Katpadi Assembly Election Result 2021 | ||
| Candidate Names | Party | Votes |
| V. Ramu | ADMK | 88394 |
| Duraimurugan | DMK (Won) | 85140 |
| A.S.Raja | AMMK | 1059 |
| M.Sudharshan | IJK | 991 |
| S. Tirukumaran | NTK | 10325 |
| Katpadi Constituency Population - 2021 | |||
| Male | Female | Transgender | Total |
| 1,19,583 | 1,27,813 | 32 | 2,47,428 |
| Tamil Nadu Ministers List - 2021 |
| Full Details of Tamil Nadu Ministers 2021 |
| 2016 Election Result | ||
| Name | Party | Votes |
| DURAIMURUGAN | DMK (WON) | 90534 |
| APPU S.R.K | ADMK | 66588 |
| SHANMUGAM N T | PMK | 12728 |
| 2011 Election Result | ||
| Name | Party | Votes |
| Duraimurugan (Winner) | DMK | 75,064 |
| Appu S.R.K.(A) Radhakrishnan.S. (Runner UP) | ADMK | 72,091 |
| Katpadi Constituency | ||
| MLA Name | Duration | Parties |
| B. Rajagopal Naidu | 1962 | INC |
| G. Natarajan | 1967 | DMK |
| Durai Murugan | 1971 | DMK |
| M. A. Jayavelu | 1977 | ADMK |
| N. A. Poongavanam | 1980 | CPI |
| G. Ragupathi | 1984 | ADMK |
| Durai Murugan | 1989 | DMK |
| K. M. Kalaiselvi | 1991 | ADMK |
| Duraimurugan | 1996 | DMK |
| Duraimurugan | 2001 | DMK |
| Duraimurugan | 2006 | DMK |
| Duraimurugan | 2011 | DMK |
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