Tamil Nadu is the southernmost state of India. The tenth largest Indian state by area and the sixth largest by population, Tamil Nadu is the home of the Tamil people, whose Tamil language—one of the longest surviving classical languages in the world—is widely spoken in the state and serves as its official language. The capital and largest city is Chennai.

The All India Anna Dravida Munnetra Kazhagam is an Indian regional political party with great influence in the state of Tamil Nadu and the union territory of Puducherry. It is a Dravidian party founded by the former chief minister of Tamil Nadu M. G. Ramachandran (M.G.R.) at Madurai on 17 October 1972 as a breakaway faction from the Dravida Munnetra Kazhagam after M. Karunanidhi expelled him from the party for demanding an account as the party treasurer. The party is adhering to the policy of socialism and secularism based on the principles of C. N. Annadurai (Anna) collectively coined as Annaism by M.G.R. The party has won a seven-time majority in the Tamil Nadu Legislative Assembly and has emerged as the most successful political outfit in the state's history. It is currently the main opposition party in the Tamil Nadu Legislative Assembly and part of the India-ruling National Democratic Alliance.

The Dravida Munnetra Kazhagam is a political party based in the state of Tamil Nadu where it is currently the ruling party having a comfortable majority without coalition support and the union territory of Puducherry where it is currently the main opposition.

The Marumalarchi Dravida Munnetra Kazhagam is a political party active in the Indian states of Tamil Nadu and the union territory of Puducherry. It was established by Vaiko in 1994 after he left the Dravida Munnetra Kazhagam.

The Desiya Murpokku Dravida Kazhagam is an Indian regional political party in the state of Tamil Nadu. It is a Dravidian party founded by the former leader of the opposition in the Tamil Nadu Legislative Assembly Vijayakant (Captain) at Madurai on 14 September 2005. The DMDK is led by its founder as president and general secretary of the party. The headquarters of the party is located at Jawaharlal Nehru Salai, Koyambedu, Chennai.

The ninth legislative assembly election of Tamil Nadu was held on 21 January 1989. Dravida Munnetra Kazhagam (DMK) won the election and its leader M. Karunanidhi, became the Chief Minister. It was his third term in office. The DMK was in power only for a short term, as it was dismissed on 31 January 1991 by the Indian Prime minister Chandra Shekhar using Article 356 (Otherwise) of the Indian Constitution.

Harbour is a state assembly constituency in Chennai district of the Indian state of Tamil Nadu. Its State Assembly Constituency number is 18. It falls under Chennai Central parliamentary constituency during national elections. Most successful party: DMK. It is one of the 234 State Legislative Assembly Constituencies in Tamil Nadu, in India.

The fifth legislative assembly election of Tamil Nadu was held in March 1971. Dravida Munnetra Kazhagam was re-elected, after its first victory under the leadership of C N Annadurai in 1967. This was the first time M. Karunanidhi, contested as the leader of DMK party won the election, since he assumed Chief Ministership for the first time, after the death of C N Annadurai. Karunanidhi had emerged successfully in the leadership crisis with other party leaders M. G. Ramachandran, and Nedunchezhiyan, which ensued after the death of C. N. Annadurai. The main opposition party in the election was Indian National Congress (Organisation) led by K. Kamaraj, whereas the Indian National Congress (Indira) faction aligned with Dravida Munnetra Kazhagam.

The third legislative assembly election to the Madras state was held on 21 February 1962. The Indian National Congress party, led by K. Kamaraj, won the election. Dravida Munnetra Kazhagam made significant in-roads in the election and emerged as the second party for the first time by winning 50 seats. 1962 Election remains the most recent election in which Indian National Congress to form a majority Government in the State as its support was heavily declined due to rise of Dravidian political parties.

Peravurani is a state assembly constituency in Tamil Nadu. Peravurani constituency created on the year of 1967 on delimitation of Pattukkottai Assembly constituency. It elects a member to the Tamil Nadu Legislative Assembly once every five years. From the 1967 elections, Anna Dravida Munnetra Kazhagam won the assembly seat three times, Dravida Munnetra Kazhagam won the assembly seat three times, Tamil Maanila Congress (Moopanar) won two times by 1996 and 2001 elections and Indian National Congress two times won the seat and Desiya Murpokku Dravidar Kazhagam won the seat in 2011 election. The current member of legislative assembly N. Ashok Kumar from Dravida Munnetra Kazhagam. It is one of the 234 State Legislative Assembly Constituencies in Tamil Nadu, in India.

Tambaram is a state assembly constituency in Chengalpattu district, Tamil Nadu, India. Its State Assembly Constituency number is 31. It includes All Wards from Zone 4 and Zone 5, Wards Comprising the rest of the areas other than Hashinapuram and Nemilichery in Zone 3 of Tambaram City Municipal Corporation and Agaramthen, Madurapakkam and Kovilanchery Villages in St.Thomas Mount Panchayat Union. It forms a part of Sriperumbudur Lok Sabha Constituency for national elections. It is one of the 234 State Legislative Assembly Constituencies in Tamil Nadu in India.

Tirupattur is a state assembly constituency in Vellore district in Tamil Nadu, India. Its State Assembly Constituency number is 50. It is one of the 234 State Legislative Assembly Constituencies in Tamil Nadu, in India. Most successful party: DMK.

The Tamil Nadu Legislative Assembly is the unicameral legislature of the Indian state of Tamil Nadu. It has a strength of 234 members, all of whom are democratically elected using the first-past-the-post system. The presiding officer of the Assembly is the Speaker. The term of the Assembly is five years, unless dissolved earlier.

K. P. Anbalagan also spelt as K. P. Anbazhagan is a Tamil Nadu politician from the All India Anna Dravida Munnetra Kazhagam party and the former Minister for Higher Education and Agriculture department in Tamil Nadu. KP Anbalagan was born on 30 April 1958 in Dharmapuri, Tamil Nadu, India. He won consecutively for 5 terms as a Member of Legislative Assembly of Palacode Constituency which record he holds with his party counterparts O.Panneerselvam and Pollachi V.Jayaraman.

Edappadi Karuppa Palaniswami, often referred to by his initials E.P.S., is an Indian politician who is the former chief minister of Tamil Nadu and the current leader of opposition in the Tamil Nadu Legislative Assembly. He served as the 7th chief minister of Tamil Nadu, from 2017 to 2021. He has been the General Secretary of All India Anna Dravida Munnetra Kazhagam since 28 March 2023. Palaniswami served as the Joint Coordinator of the AIADMK from 2017 to 2022 and Interim General Secretary of the AIADMK from 2022 to 2023. He also served as the Headquarters Secretary of the AIADMK from 2016 to 2022.

Naam Tamilar Katchi is a Tamil nationalist party in the Indian state of Tamil Nadu and the union territory of Puducherry. The party is known to revere Liberation Tigers of Tamil Eelam founder Velupillai Prabhakaran, whose image is prominently displayed at party events and gatherings. Originally founded in 1958, the party was revived in 2010.

By-elections to eighteen state assembly constituencies were held in Tamil Nadu on 18 April 2019 together with 2019 Indian general election. It was considered to be mini-assembly election battle for the power in Tamil Nadu. The ruling government had to prove its majority while the opposition was trying hard to get maximum seats. There were 22 seats vacant in the Tamil Nadu assembly, By-election took place in two phases and in the first phase for 18 assembly constituencies together with Lok Sabha general election on 18 April 2019 in the state. Remaining 4 assembly constituencies election was held on 19 May. The counting of votes was conducted on 23 May, and on the same day the results were announced. Then the by-elections for 2 seats Vikravandi and Nanguneri were conducted on 21 October 2019