Kunnam Assembly constituency is located in Perambalur district. The constituency is known for its agrarian base and highly competitive local politics. In the 2021 Assembly elections, DMK’s S. S. Sivasankar won the seat with 1,03,922 votes, defeating AIADMK’s R. T. Ramachandran, who secured 97,593 votes. The margin of victory was 6,329 votes. In the 2016 Assembly elections, AIADMK’s R. T. Ramachandran won the seat with 78,218 votes, defeating DMK’s T. Durairaj, who secured 59,422 votes. The margin of victory was 18,796 votes. In the 2011 Assembly elections, DMK’s S. S. Sivasankar won the seat with 81,723 votes, defeating AIADMK’s Durai. Manivel, who received 58,766 votes. The margin of victory stood at 22,957 votes.