Cooch behar (West Bengal), May 05 (ANI): Voting for the sixth and final phase of West Bengal assembly elections started amid tight security on Thursday. More than 58 lakh people are registered to vote in the 25 constituencies spanning the Cooch Behar and East Midnapore district. A total of 67 candidates are in the fray for nine seats in Coochbehar, 12 of them independents.