ARARIA / PATNA, Feb. 27 -- The BJP will win the West Bengal assembly polls and drive out every infiltrator upon forming the government, Union home minister Amit Shah declared on Thursday, during the second day of his three-day visit to Bihar's Araria district. Addressing Sashastra Seema Bal (SSB) personnel after inaugurating a new outpost in Leti on the Indo-Nepal border under Sikti block and launching several projects, Shah said, "Elections are round the corner in West Bengal, and I am confident that the BJP is going to win. After forming the government, our government shall drive out every infiltrator from West Bengal." Shah said, "Bihar, Jharkhand and West Bengal are the worst affected by demographic change...the BJP-led government's top...