He was Member of Rajya Sabha for four terms, 3-4-1990 to 2-4-1996, 3-4-1996 to 2-4-2002 and 3-4-2002 to 2-4-2008 and 3-4-2008 to 2-4-2014. However he resigned on 23-9-2008.[1]
He was Leader of AIFB in Rajya Sabha. He is married to Shrimati Swapna Biswas and has one daughter. He resides in Kolkata.[2]