If she wins the majority of the seats in West Bengal, Mamata Banerjee and her Trinamool Congress party could become the third largest party in the Indian parliament – and even play a crucial role in forming the
next government. Victor Mallet travels to the industrial port of Haldia in the Ganges delta to find out more.
Filmed and produced by Jyotsna Singh. Edited by Tom Griggs. Additional footage by Reuters.