In 2006 assembly elections in Tamil Nadu, Kaliyavarathan.V.A.T of PMK won the Mugaiyur assembly constituency.
In 2001 assembly elections in Tamil Nadu, Gothandaraman G. of ADMK won the Mugaiyur assembly constituency.
In 1996 assembly elections in Tamil Nadu, Sampath, A.G. of DMK won the Mugaiyur assembly constituency.
In 1991 assembly elections in Tamil Nadu, Savithiri Ammal R. of ADK won the Mugaiyur assembly constituency.