A. Ghani Khan Choudhury, Abha Maiti, Sushil Kumar Dhara revolted against the leadership of the old conservative elites of "the Syndicate" like Prafulla Chandra Sen and Atulya Ghosh in 1966 owing to the policies of the Prafulla Sen government during the Food Movement.

[2] The revolt was mainly led by younger leaders of the Congress and enjoyed widespread support among the rural landowning and trading classes as well as the middle castes of rural Bengal, such as the Mahishyas, Aguris and the Sadgops who looked upon an alliance with the Proletarian Left Front as useful against the dominance of the Calcutta-oriented Congress leadership which was seen to favour the Calcutta-based, Marwari owned large private industries and British business interests too much.

The Party had a strong base in Midnapore, Hooghly, Nadia, Murshidabad and all of North Bengal and a big plank was development of rural areas and small towns as opposed to the Calcutta-obsessed approach of the Congress-led West Bengal Government.

[2] On 19 March 1970 the second United Front government fell as a result of the breakdown of the alliance between the Bangla Congress and the Communist Party of India (Marxist).

Due to the Land Reform movement led by Communist leaders Benoy Choudhury and Hare Krishna Konar which threatened the interests of the landowning Middle/backward castes that supported the Bangla Congress.