The Trinamool Congress will fight all seven seats in Delhi in the coming Lok Sabha polls, party national general secretary Mukul Roy said here Monday.br Roy also said social activist Anna Hazare and Trinamool chief Mamata Banerjee will address a joint rally next month in Delhi. The rally could be held at the Ram Leela ground.br br He said Indira Tiwari, the granddaughter of former Uttar Pradesh chief minister and railway minister Kamalapati Tripathi, would contest from Varanasi on a Trinamool ticket. Tiwari recently joined the Trinamool.