O. Subramanian is an Indian politician and former 8th Opposition Leader of the Legislative Assembly Tamil Nadu. He was elected to the Tamil Nadu legislative assembly as an Indian National Congress candidate from Sivaganga constituency in 1977 and 1984 elections1977 Tamil Nadu Election Results, Election Commission of India1984 Tamil Nadu Election Results, Election Commission of India and as an Indian National Congress (Indira) candidate in 1980 election.1980 Tamil Nadu Election Results, Election Commission of India

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