He was elected to West Bengal State Assembly in 1991, 1996 and 2001 from Communist Party of India (Marxist).

His family moved to West Bengal when he was in the ninth grade at Baisari High School and lived in a rented house in Tiffin Bazaar area.

Padma Nidhi Dhar was first jailed on 1956 for a month during the political movement against Bengal Bihar unification.

[3] Then in 1966 again he was arrested and jailed for a year in PD act, as he was active in the food movement.

After his death, Padma Nidhi Dhar memorial trust was formed, where they take up different social, welfare and cultural activities, including blood donation camp, examination workshops etc.