Congress Socialist Party

The Congress Socialist Party (CSP) was a socialist caucus within the Indian National Congress. It was founded in 1934 by Congress members who rejected what they saw as the anti-rational mysticism of Gandhi as well as the sectarian attitude of the Communist Party of India towards the Congress. Influenced by Fabianism as well as Marxism-Leninism, the CSP included advocates of armed struggle or sabotage (such as Yusuf Meherally, Jai Prakash Narayan, and Basawon Singh (Sinha) as well as those who insisted upon Ahimsa or Nonviolent resistance (such as Acharya Narendra Deva). The CSP advocated decentralized socialism in which co-operatives, trade unions, independent farmers, and local authorities would hold a substantial share of the economic power.

As Marxists, they hoped to transcend communal divisions through class solidarity. Some, such as Narendra Deva or Basawon Singh (Sinha), advocated a democratic socialism distinct from both Marxism and reformist social democracy. During the Popular Front period, the communists worked within CSP.