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Alliance Deposit Forfeitures, Strike Rates & Seat Conversion Ratios

Explore comprehensive statutory data on which alliances and parties saved or forfeited their security deposits, candidate demographic profiles (age brackets, education, women representation), and 50-year legislative trends.

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Ruling Coalition Government of Tamil Nadu (123 Seats Post-By-Polls) Founded:

Secular Social Justice Victory Alliance (SSJVA)

மதச்சார்பற்ற சமூகநீதி வெற்றிக் கூட்டணி
Chairperson / Leadership C. Joseph Vijay
22nd Chief Minister of Tamil Nadu & Founder President, TVK
Floor Strength (17th Assembly) 123 / 234 Seats (Governing Majority)
+5 Seats above the 118 Majority Mark
Headquarters TVK Headquarters, Panaiyur, East Coast Road (ECR), Chennai, Tamil Nadu

The Secular Social Justice Victory Alliance (SSJVA / மதச்சார்பற்ற சமூகநீதி வெற்றிக் கூட்டணி) is a center-left political alliance and the governing coalition in the state of Tamil Nadu, India. Chaired by 22nd Chief Minister C. Joseph Vijay, the front commands 123 seats in the 17th Tamil Nadu Legislative Assembly following its clean sweep in the October 2026 by-elections (Madurantakam & Dharapuram), standing comfortably above the 118 majority threshold.

Constituent Member Parties & 2026 Seat Distribution:
Assembly Election History Reports:
Principal Opposition in the 17th Tamil Nadu Legislative Assembly Founded: 2004 (Predecessors active since 1971)

DMK-led Alliance (Secular Progressive Alliance / DPA) (SPA / DPA)

மதச்சார்பற்ற முற்போக்கு கூட்டணி (திமுக கூட்டணி)
Chairperson / Leadership M. K. Stalin
Former Chief Minister (2021-2026) & President, DMK; Leader of Opposition
Floor Strength (17th Assembly) 59 / 234 Seats (Principal Legislative Opposition)
59 Seats on Assembly Floor
Headquarters Anna Arivalayam, Anna Salai, Teynampet, Chennai, Tamil Nadu

The DMK-led Alliance, historically operating under banners including the Democratic Progressive Alliance (DPA) and the Secular Progressive Alliance (SPA / மதச்சார்பற்ற முற்போக்கு கூட்டணி), is one of the two dominant political coalition structures in Tamil Nadu. Founded and nurtured by Dr. M. Karunanidhi and presently led by M. K. Stalin, the front has captured power in 1971, 1989, 1996, 2006, and 2021.

Constituent Member Parties & 2026 Seat Distribution:
Key Opposition Coalition in the 17th Tamil Nadu Legislative Assembly Founded: 1977 (Reconstituted for 1998, 2011, 2019, 2021, and 2026)

AIADMK-led Alliance (NDA Front) (AIADMK+ / NDA)

அஇஅதிமுக கூட்டணி (தேசிய ஜனநாயகக் கூட்டணி)
Chairperson / Leadership Edappadi K. Palaniswami
Former Chief Minister (2017-2021) & General Secretary, AIADMK
Floor Strength (17th Assembly) 51 / 234 Seats (Secondary Opposition Front Post-By-Polls)
51 Seats on Assembly Floor (AIADMK 45, PMK 4, BJP 1, DMDK 1, AMMK 1)
Headquarters Puratchi Thalaivar M.G.R. Maaligai, Avvai Shanmugam Salai, Royapettah, Chennai, Tamil Nadu

The AIADMK-led Alliance (அஇஅதிமுக கூட்டணி), operating in partnership with the National Democratic Alliance (NDA), is a dominant political front in Tamil Nadu. Founded by M. G. Ramachandran in 1977, the alliance has governed the state for over three decades under MGR (1977-1987), J. Jayalalithaa (1991-1996, 2001-2006, 2011-2016), and Edappadi K. Palaniswami (2017-2021).

Constituent Member Parties & 2026 Seat Distribution:
Authoritative Election Archive & References

Cross-Indexed Election Portals & Verification

Every seat count, strike rate, and coalition breakdown is reconciled against Election Commission of India (ECI) Form 20 returns and recognized Wikipedia documentation.

2026 Alliances Audit →
Seat-sharing matrix, contested, won, lost, and conversion strike rates for 2026.
Cabinet 2026 →
CM C. Joseph Vijay 30-member Council of Ministers and portfolios.
By-Elections Hub →
Maduranthakam & Dharapuram by-election campaign trail and 100+ videos.
All 38 Districts →
District-by-district seat distribution across all 234 assembly seats.