Trinamool MP and West Bengal Chief Minister Mamata Banerjee's go-to man in Delhi Derek O'Brien spoke exclusively to Hindustan Times' Kumkum Chadha on the West Bengal polls. Speaking on the elections, the TMC MP said that the BJP has outdfunded the Trinamool Congress in the state. “TMC is fighting a tough battle,” the TMC MP adds. Watch the full interview for more details.