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 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 Government of Tamil Nadu governs the Indian state of Tamil Nadu. It is seated at Fort St George, Chennai. The legislature of Tamil Nadu was bicameral until 1986, when it was replaced by a unicameral legislature, like most other states in India.

Thiyagarayanagar is the legislative assembly constituency located in the southern part of Chennai district of the Indian state of Tamil Nadu. Its State Assembly Constituency number is 24. It is a part of Chennai South parliamentary constituency during national elections. Thiyagarayanagar is in existence since 1957 election. It currently covers T. Nagar and adjacent localities, such as Pondy Bazaar, Kodambakkam, Ashok Nagar, KK Nagar, MGR Nagar, Vadapalani and West Mambalam. It is one of the 234 State Legislative Assembly Constituencies in Tamil Nadu.

Poonamallee is a state assembly constituency in Tiruvallur district in Tamil Nadu. Its State Assembly Constituency number is 5. The seat is reserved for candidates from the Scheduled Castes. It comprises portions of the Poonamallee and Thiruvallur taluks and is a part of the Thiruvallur constituency for national elections to the Parliament of India. It is one of the 234 State Legislative Assembly Constituencies in Tamil Nadu, in India.

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.

Kolathur State Assembly constituency is one of the 234 state legislative assembly constituencies in Tamil Nadu in southern India. Its State Assembly Constituency number is 13. It is also one of the 6 state legislative assembly constituencies included in the Chennai North Lok Sabha constituency. This constituency was represented only by the chief minister of Tamil Nadu M. K. Stalin.

Avadi is a state assembly constituency in Tamil Nadu, India, newly formed after constituency delimitation. Its State Assembly Constituency number is 6. It consists of a portion of Avadi taluk and includes Avadi. It is included in the Thiruvallur parliamentary constituency. It is one of the 234 State Legislative Assembly Constituencies in Tamil Nadu.

Thiru. Vi. Ka. Nagar (SC) is a state assembly constituency in Tamil Nadu, India, formed after constituency delimitation. Its State Assembly Constituency number is 15. The seat is reserved for candidates from the Scheduled Castes. It is included in the Chennai North parliamentary constituency. It is one of the 234 State Legislative Assembly Constituencies in Tamil Nadu.

Velachery is a state assembly constituency in Tamil Nadu, India, that was formed after constituency delimitation in 2007. Its State Assembly Constituency number is 26. It forms a part of the Chennai South parliamentary constituency for national elections. It is one of the 234 State Legislative Assembly Constituencies in Tamil Nadu.

Sholinganallur is a state assembly constituency in the Chennai district of Tamil Nadu, India, that was formed after constituency delimitation in 2007. Its State Assembly Constituency number is 27. It is a part of the Chennai South parliamentary constituency for national elections. It is one of the 234 State Legislative Assembly Constituencies in Tamil Nadu.

Pallavaram is a state assembly constituency in Tamil Nadu, India, that was formed after constituency delimitation in 2007. Its State Assembly Constituency number is 30. Located in Chengalpattu district, it is included in the Sriperumbudur parliamentary constituency for national elections. It is one of the 234 State Legislative Assembly Constituencies in Tamil Nadu in India.

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