Mumbai, April 28 -- The stage looks set for a direct clash between the BJP and the Congress in the Mumbai North Central Lok Sabha constituency as the saffron party on Saturday declared senior public prosecutor Ujjwal Nikam as its candidate for the polls scheduled on May 20. Nikam, who played a crucial role in getting death penalty for 26/11 terror attack accused Ajmal Kasab, was chosen over the sitting MP Poonam Mahajan as poll surveys indicated a negative rating for her. He will take on Mumbai Congress chief Varsha Gaikwad, though there are chances that former police commissioner Sanjay Panday may enter the fray as an independent, making the contest a triangular one....