Siliguri, April 26 -- The Darjeeling seat in Bengal goes to the polls on Friday in circumstances that has made the contest even more intriguing than usual -- infighting in the local units of both the Bharatiya Janata Party (BJP) and the Congress, a tussle that has seen Gorkha leaders switching camps, the state's ruling Trinamool Congress making a desperate bid to snatch the seat for the first time, and a 40-year-old demand for a separate state of Gorkhaland making gradual a comeback in posters and slogans....