Sankarapuram is a state assembly constituency in Viluppuram district in Tamil Nadu. It consists of portions of the Sankarapuram and Kallakkurichi taluks. It falls under Kallakurichi (Lok Sabha constituency). Elections and winners in the constituency are listed below. After demolished the Chinnasalem state assembly by separate the assembly areas into two pieces and one area is added to sanakarapuram constituency and other one is added to kallakurichi constituency.