Ghosh was a follower of Subhas Chandra Bose's political ideology. He became a general secretary of All India Forward Bloc, West Bengal in 1951. From that time on he was in that position without any interruption until his death in 2016. After the Indian general election of 1989, he voiced his opposition to the then coalition government, which he termed an "opportunistic coalition". Ghosh said that..."The opportunistic coalition coming up in Delhi will conspire against the interests of the people of West Bengal and in the changed situation, the Left Front must get ready to spearhead a sustained movement for preserving the interests of the state as well its people." After the Nandigram violence, Ghosh convened an all political party meeting in Kolkata.