Karaikudi is a state assembly constituency in Sivaganga district in Tamil Nadu. Most successful party: INC (five times). It is one of the 234 State Legislative Assembly Constituencies in Tamil Nadu in India.
Karaikudi is a part of Karaikudi Assembly constituency and it elects a member to the Tamil Nadu Legislative Assembly once every five years. From the 1977 elections, All India Anna Dravid Munnetra Kazhagam (AIADMK) won the assembly seat four times (in the 1977, 1984, 1991 and 2009 elections), two times by Dravida Munnetra Kazhagam (DMK, 1980 and 1989), once by Tamil Maanila Congress (TMC, 1996) and three by the Indian National Congress (INC) won during the 2006, 2016 and 2019 elections. The current member of the legislative assembly is S. Mangudi from the INC.
Karaikudi is a part of Sivaganga Lok Sabha constituency. The current Member of Parliament from the constituency is Karti Chidambaram from the INC.