The ruling BJP and its allies are leading in all the five assembly constituencies in Assam, where bypolls were held on October 30, according to the latest update of the counting trends put on the Election Commission of India (ECI) website. BJP candidates Phanidhar Talukdar, Rupjyoti Kurmi and Sushanta Borgohain are leading in Bhabanipur, Mariani and Thowra seats respectively.