Karimganj South is one of the 126 Assam Legislative Assembly constituencies located in the Karimganj district. The Assam Assembly Election 2021 for Karimganj South was held on April 1, with the results declared on May 2. In 2016, the constituency had 1,60,632 registered voters, including 84,574 male voters and 76,058 female voters. The None of the Above (NOTA) option received 0.1% of the votes.
In the 2016 Assam Legislative Assembly Election, 25 candidates contested from Karimganj South. The constituency was one of 13 seats won by the Indian National Congress. It was a tight race, with All India United Democratic Front’s Aziz Ahmed Khan defeating Indian National Congress’s Siddeque Ahmed by a margin of just 4,416 votes.