India, April 25 -- The Darjeeling seat in West 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 (TMC) 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 a gradual comeback in posters and slogans....