In 2011 assembly elections in Tamil Nadu, Velumani S P of AIADMK won the Thondamuthur assembly constituency.
In 2006 assembly elections in Tamil Nadu, Kandaswamy M.N of INC won the Thondamuthur assembly constituency.
In 2006 assembly elections in Tamil Nadu, Kannappan.M. of MDMK won the Thondamuthur assembly constituency.
In 2001 assembly elections in Tamil Nadu, Balasubramoniyan.S.R. of TMC(M) won the Thondamuthur assembly constituency.
In 1996 assembly elections in Tamil Nadu, Ramachandran, C.R. of DMK won the Thondamuthur assembly constituency.
In 1991 assembly elections in Tamil Nadu, C. Aranganayagam of ADK won the Thondamuthur assembly constituency.