In 2011 assembly elections in Tamil Nadu, Kamaraj.R of AIADMK won the Nannilam assembly constituency.
In 2006 assembly elections in Tamil Nadu, Padmavathy .P of CPI won the Nannilam assembly constituency.
In 2001 assembly elections in Tamil Nadu, Tamizharasan C.K. of TMC(M) won the Nannilam assembly constituency.
In 1996 assembly elections in Tamil Nadu, Padma of TMC(M) won the Nannilam assembly constituency.
In 1991 assembly elections in Tamil Nadu, K. Gopal of ADK won the Nannilam assembly constituency.