He served as the Leader of Opposition for a long time when Dr. Bidhan Chandra Roy was the Chief Minister of West Bengal .
Basu was elected to the Bengal Legislative Assembly in 1946 , contesting the Railway constituency .
Basu served as the Leader of Opposition for a long time when Dr. Bidhan Chandra Roy was the Chief Minister of West Bengal .
Basu was elected to the Bengal Legislative Assembly in 1946 , contesting the Railway constituency .