Kolkata: Repolling in 568 booths across West Bengal from where the State Election Commission (SEC) received complaints of violence during the panchayat poll, began on Wednesday amid tight security. The booths where repolling is being held are spread in all the 20 districts of the state where the rural polls were held on Monday, SEC officials said. The state government and the police have been asked to make elaborate security arrangements so that the repolling is held in a free and fair manner, they said.