The Bharatiya Janata Party will have its first ever chief minister in West Bengal on May 3, when the results for the assembly election are expected to be declared, BJP MP Tejasvi Surva has promised, adding the party will win at least 200 of the Trinamool-ruled state's 294 seats. "BJP will win more than 200 seats in West Bengal. (Chief Minister) Mamata Banerjee's days as a chief minister are numbered. On the 3rd of May, West Bengal will have a BJP chief minister," Mr Surya was quoted as saying by news agency ANI.