Mugaiyur is a state assembly constituency in Tamil Nadu. After delimitation of constituencies in 2009, It was reorganised into Tirukkoyilur constituency.[1]
| Year | Winner | Party |
|---|---|---|
| 1967 | A. Govindasamy | Dravida Munnetra Kazhagam |
| Year | Winner | Party |
|---|---|---|
| 1971 | A. G. Padmavathi | Dravida Munnetra Kazhagam |
| 1977 | G. Rangothaman | Anna Dravida Munnetra Kazhagam |
| 1980 | R. Sundaramurthy | Indian National Congress (Indira) |
| 1984 | M. Chandrasekhar | Anna Dravida Munnetra Kazhagam |
| 1989 | A. G. Sampath | Dravida Munnetra Kazhagam |
| 1991 | R. Savithiri Ammal | Anna Dravida Munnetra Kazhagam |
| 1996 | A. G. Sampath | Dravida Munnetra Kazhagam |
| 2001 | G. Gothandaraman | Anna Dravida Munnetra Kazhagam |
| 2006 | V. A. T. Kaliyavarthan | Pattali Makkal Katchi |
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