They mostly worked with Marwari traders as well as migrants from eastern Uttar Pradesh and Bihar, in Kolkata’s Burrabazar.

The party also used various cultural icons in the state, including Bankim Chandra Chatterjee and Swami Vivekananda in its election campaigns.

[11] The primary objective of the party was to create a nucleus for a future third force in West Bengal politics.

[16][11] This was the first time BJP fielded such a large number of candidates in West Bengal assembly elections.

[17] While support for BJP increased among Bengali communities, its main stronghold in the state remained non-Bengali populations in Calcutta (Marwaris and Gujaratis).

[26] In the 2006 Assembly election, BJP entered into an alliance with the All India Trinamool Congress and contested on 29 constituencies.

[27] In 2009 Indian general election, BJP candidate Jaswant Singh, with support from Gorkha Janmukti Morcha, won the Darjeeling Lok Sabha seat getting a total of 4,97,649 (51.50%) votes.

On 24 May 2019, The Statesman reported that BJP had made CPI-M a marginalised party and setting a strong challenge to the ruling Trinamool Congress.

[34][35] The BJP's Bengali booklet released in January 2020 claimed that the National Register of Citizens will be implemented to identify any undocumented migrants including Hindus, Sikhs, Muslims and non-Muslims by the Citizenship Amendment Act.

[38] As of September 2021, the President of the West Bengal state branch of the party is Dr. Sukanta Majumder.

Dilip Ghosh is most successful president.During his leadership party gain 18 MP in 2019 lok sabha election.