 He won from Manteswar (Vidhan Sabha constituency) as a CPI(M) candidate.Subsequently, he won in the Nadanghat (Vidhan Sabha constituency) in 1969,
1971, 1977, 1982 and 1987.He was speaker of the West Bengal assembly from 1977 to 1982 and was the Minister-in- charge of Law Department, West Bengal from 1982 to 1987.