A Trinamool MLA who quit in December, then returned almost immediately, has finally exited Chief Minister Mamata Banerjee's party just weeks before the Bengal election. Jitendra Tiwari, the vacillating lawmaker, joined the BJP today. The MLA from Pandaveswar was a key Trinamool face in Asansol. Welcoming him into the BJP, its Bengal chief Dilip Ghosh said, "Jitendra Tiwari has changed his party today. He worked very hard for the Trinamool. One poriborton (change) has already started in Bengal, the other will also happen. Rajeev Banerjee and Probir Ghoshal (former TMC leaders) are also here with us."