Of the 57 seats, 19 are in Murshidabad, 26 in Burdwan and 12 in Birbhum districts.
Apart from the Industry minister, Power Minister Mrinal Banerjee and Animal Husbandry minister Anisur Rahman would also try their luck in this phase.
None of these constituencies would witness straight contests. Like the previous three rounds, tight security arrangements have been made for the fourth phase as well.
Central paramilitary forces would man the polling booths, Election Commission sources said. Election has already been held in 187 constituencies.