In 2011 assembly elections in Tamil Nadu, N.R.Rengarajan of INC won the Pattukkottai assembly constituency.
In 2006 assembly elections in Tamil Nadu, Rengarajan.N.R of INC won the Pattukkottai assembly constituency.
In 2001 assembly elections in Tamil Nadu, Rengarajan N.R. of TMC(M) won the Pattukkottai assembly constituency.
In 1996 assembly elections in Tamil Nadu, Balasubramanian P. of DMK won the Pattukkottai assembly constituency.
In 1991 assembly elections in Tamil Nadu, Balasubramaniam K. of ADK won the Pattukkottai assembly constituency.