Preparations are underway on war footing for the upcoming civic elections in Delhi, with poll authorities having identified strong rooms and counting centres, and returning officers undergoing training ahead of the exercise, officials said on Friday. The municipal elections are slated to be held in April, however, the dates are yet to be announced. Delhi has three municipal corporations -- North, South and East Delhi municipal corporations -- and the last civic polls were held in April 2017. "Preparations for the upcoming polls in Delhi are underway, and being done on a war-scale. Strong rooms and counting centres have been identified," a senior official said. He also said that about 15,000-16,000 polling stations are expected to be set up for the civic polls here.