The political parties that protested against land acquisition in Singur, West Bengal, primarily included:
Trinamool Congress (TMC): Led by Mamata Banerjee, the TMC was at the forefront of the protests against the acquisition of agricultural land for the Tata Nano car project. The party mobilized significant public support and organized various demonstrations.
Left Front: The Left Front, which was in power in West Bengal at the time of the acquisition, faced criticism and opposition from various factions, including some within its own ranks, regarding the handling of land acquisition.
Bharatiya Janata Party (BJP): While not as prominently involved as the TMC, the BJP also expressed concerns about the land acquisition policies of the Left Front government.
Various Farmers' Organizations: Numerous local farmers' groups and organizations joined the protests, advocating for the rights of farmers and opposing the forced acquisition of their land.
The protests in Singur became a significant political issue in West Bengal, contributing to the eventual electoral success of the TMC in the 2011 state elections.