Tamil Nadu Assembly election

The Tamil Nadu Assembly election is the quinquennial contest that determines the composition of the 234‑member Tamil Nadu Legislative Assembly, the unicameral law‑making body governing India’s most populous southern state. Held under the First‑Past‑the‑Post system, the election decides which party or coalition commands the executive, appoints the chief minister, and shapes policy for a state that contributes roughly 19 percent of India’s GDP. Because Tamil Nadu’s political arena has been dominated by Dravidian parties since the 1960s, each poll serves as a barometer for regional identity, coalition dynamics, and the balance of power between centre‑state relations. ## Historical Background The inaugural state election took place on 26 March 1952, when the region was still officially the Madras Presidency, and produced a Congress‑led ministry under C. Rajagopalachari. A decisive shift occurred in the 1967 election when the Dravida Munnetra Kazhagam (DMK) captured 138 of 234 seats, inaugurating the first non‑Congress government and cementing Dravidian nationalism as the dominant narrative. Subsequent contests saw the AIADMK, founded by M. G. Ramachandran in 1972, alternate power with the DMK, creating a two‑party system that has persisted through ten elections up to the 2021 poll. The 1991 election marked the first instance of a coalition between a regional party and the national Bharatiya Janata Party (BJP), though the alliance dissolved after the 1996 results. The 2006 election introduced a three‑cornered contest when the Congress briefly aligned with the DMK, while the AIADMK ran independently, illustrating the fluidity of coalition politics. The 2021 election, conducted on 6 April 2021, returned the DMK to power with 133 seats, ending a decade of AIADMK rule and resetting the state’s political calculus ahead of the 2026 cycle. ## Legal and Institutional Framework Article 172 of the Constitution of India mandates that every state legislative assembly have a term of five years unless dissolved earlier, providing the constitutional basis for Tamil Nadu’s election schedule. The Representation of the People Act 1951 (Section 118) prescribes the conduct of state elections, delegating authority to the Election Commission of India, which appoints a State Election Officer to oversee polling in each of the 234 constituencies. The most recent delimitation, effected by the Delimitation Commission’s order of 2008, fixed constituency boundaries based on the 2001 census, ensuring roughly equal voter populations across seats. The Election Commission employs electronic voting machines (EVMs) equipped with Voter‑Verified Paper Audit Trail (VVPAT) units in all 62 million registered voters, a figure recorded in the 2021 electoral roll. The commission also enforces the Model Code of Conduct from the announcement of the schedule—set for 10 January 2021 in the 2021 cycle—until the final result declaration on 2 May 2021, thereby regulating campaign expenditures, public meetings, and media usage. The 2020 104th Constitutional Amendment abolished the nominated Anglo‑Indian seat, reducing the assembly to exclusively elected members. ## Electoral Mechanics and Recent Contests Each constituency elects one member by plurality, meaning the candidate with the highest vote total wins regardless of whether a majority is achieved; this system favours parties with concentrated regional support such as the DMK and AIADMK. In the 2021 election, voter turnout reached 73.5 percent, translating to 45.7 million ballots cast, a rise of 2.1 percentage points from the 2016 turnout of 71.4 percent. The DMK’s 133 seats represented a gain of 23 seats over its 2016 tally, while the AIADMK’s 66 seats reflected a loss of 19 seats, reshaping the legislative balance. The 2021 results also featured the BJP’s modest increase to 4 seats, up from a single seat in 2016, and the Congress’s decline to 2 seats, down from 8, underscoring the limited penetration of national parties in a state where regional identities dominate. Post‑election, the DMK formed a minority government supported by the Congress, the Indian National Anna Dravida Munnetra Kazhagam (INADMK), and several independent legislators, illustrating the continued relevance of coalition building even within a largely two‑party framework. ## Significance and Contemporary Dynamics Tamil Nadu’s elections are pivotal for national politics because the state supplies 20 Lok Sabha seats, the second‑largest bloc after Uttar Pradesh, and because the chief minister’s stance on federal issues—such as language policy, water sharing, and industrial licensing—often influences central legislation. The 2021 victory of the DMK prompted the