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Tamil Nadu prepares for the April 2026 assembly elections. Campaign war rooms in Chennai analyse caste arithmetic, welfare promises, and alliances. Nominations begin in about 10 days. The political theatre promises lively, acrimonious performances.

A four-cornered contest features the Dravida Munnetra Kazhagam (DMK) and its allies, the All India Anna Dravida Munnetra Kazhagam (AIADMK) and its partners, the newly formed Tamilaga Vettri Kazhagam (TVK) led by actor Vijay, and the Naam Tamilar Katchi (NTK).

Reports show Gen Z voters feel abandoned by established political forces. This election will be unlike any the state has seen.

But to understand where Tamil Nadu is going, we must look at where it has been. Beneath the rhetoric of Dravidian pride and political mudslinging lies voter data. To understand the 2026 polls, we must unpack the 2021 assembly elections. That vote ended a decade of AIADMK rule and made M.K. Stalin the chief minister.

The post-poll survey conducted by Lokniti-CSDS between April 7 and April 20, 2021, covered 4,354 voters across 160 polling stations in 40 constituencies. It gives a microscopic view of the Tamil voters’ minds.

The 2021 election was a bipolar contest with significant fringe movements.

Among those who disclosed their vote, the DMK secured 39.1% of the valid vote share. The incumbent AIADMK held 34.1%. Their national allies, Congress and Bharatiya Janata Party (BJP), pulled in 4.9% and 3.0%, respectively.

Over the last 15 years, the alliance picture shifted. In 2021, the DMK-led alliance secured 45.4% of the vote, beating the AIADMK-led alliance at 39.7%. This shifted from 2011, when the AIADMK and its alliance partners won 51.80% against DMK and its alliance ‘s 39.44%, with the BJP taking 2.22%. The 2016 race was tight: AIADMK and its partners won 40.77%, the DMK-led alliance won 39.8%, the People’s Welfare Front won 6.05%, Pattali Makkal Katchi (PMK) won 5.32%, and the BJP won 2.84%.

The number that jumps off the 2021 spreadsheet is 6.6% – officially 6.58% in finalised tallies. That was the valid vote share of actor-director Seeman’s Naam Tamilar Katchi (NTK). Kamal Haasan’s Makkal Needhi Maiam (MNM) stood at 2.6%, with an alliance total of 2.73%. T.T.V. Dhinakaran’s Amma Makkal Munnetra Kazhagam (AMMK) stood at 2.5%, with an alliance total of 2.85%.

Tamil voters resist negative campaigns; 73.1% voted for the candidate they wanted, 6.8% voted specifically to defeat someone else.

The heirs and the challengers

The 2021 assembly election was marked by the absence of J. Jayalalithaa and M. Karunanidhi. The state searched for its next leader.

When asked who they wanted as the next chief minister, 35.7% chose Stalin. The incumbent Edappadi K. Palaniswami (EPS) took 26.3%.

For the DMK, the legacy was clear; 78.2% of voters declared Stalin as the true heir to Karunanidhi’s legacy. His brother M.K. Alagiri registered 2.6%.

But the AIADMK faced a vacuum. The fight for Jayalalithaa’s legacy........

© The Wire