🗓️ AIADMK+ / NDA Across Assembly History:
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Alliance Leader in 2021 Edappadi K. Palaniswami & O. Panneerselvam Head of Coalition / CM Candidate
Seats Won & Strike Rate 75 / 234 Contested 32.05% Coalition Strike Rate
Popular Vote & Share 18,363,499 39.71% Statewide Valid Votes
Assembly Outcome 75 Seats Won • Served as Principal Opposition (2021-2026) Majority Threshold: 118 / 234 Seats
Official ECI Seat Distribution

Constituent Parties: Contested, Won, Lost & Strike Rate (2021)

Compare All Fronts in 2021 →
Constituent Party Contested Won Lost Strike Rate Popular Votes Vote Share Party Leader & Assigned Symbol
AIADMK
All India Anna Dravida Munnetra Kazhagam
191 66 125
34.6%
15,391,555 33.29%
Edappadi K. Palaniswami & O. Panneerselvam
Symbol: Two Leaves
PMK
Pattali Makkal Katchi
23 5 18
21.7%
1,758,774 3.80%
Dr. Anbumani Ramadoss
Symbol: Mango
BJP
Bharatiya Janata Party
20 4 16
20.0%
1,213,510 2.62%
L. Murugan
Symbol: Lotus
Total Coalition Performance 234 75 159 32.05% 18,363,499 39.71% ECI Verified Data Archive
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Political Context, Seat Bargaining & Legislative Impact (2021)

Seeking a third straight term in 2021 under Chief Minister Edappadi K. Palaniswami, the AIADMK contested in partnership with the PMK (23 seats) and the BJP (20 seats). AIADMK put up a fierce fight particularly in Western Tamil Nadu (Kongu belt) where it swept most districts. The coalition won 75 seats with 39.71% of the vote. AIADMK won 66 seats, PMK won 5, and the BJP won 4 seats—entering the Tamil Nadu Assembly for the first time since 2001. EPS became the official Leader of Opposition.

Electoral Battleground

Key Opposing Alliances in the 2021 Assembly Election

SPA / DPA Alliance 159 Seats (45.38%)

Secular Progressive Alliance (SPA)

Led by M. K. Stalin (Chief Minister of Tamil Nadu). Won 159 / 234 contested seats (68.0% strike rate).
← 2016 Assembly Election
AIADMK-led Alliance (NDA Front) Overview
2026 Assembly Election →

Related Tamil Nadu 2021 Election Intelligence & Data Hubs:

🗳️ 2021 Full Assembly Results → 🤝 2021 All Coalitions Matrix → 📊 2021 Turnout & Vote Shares → 🏛️ Political Parties Directory →