Founded in 1964. Believes in Marxism- Leninism. Supports socialism, secularism and democracy and opposes imperialism and communalism. Accepts democratic elections as a useful and helpful means for securing the objective of socio economic justice in India. Enjoys strong support in West Bengal, Kerala and Tripura, especially among the poor, factory workers, farmers, agricultural labourers and the intelligentsia. Critical of the new economic policies that allow free flow of foreign capital and goods into the country. Was in power in West Bengal without a break for 34 years. In the 2014 Lok Sabha elections, it won about3 per cent of votes and 9 seats.