As parties prepare the battleground for crucial Assembly elections in four states and one union territory, the Election Commission formally sounded the bugle and announced the schedule for assembly polls in Tamil Nadu, Assam, Kerala, West Bengal and Puducherry on Friday.A total of 824 Assembly constituencies shall be going for polls during these elections. 18.68 crore electors will cast vote at 2.7 lakh polling stations in Tamil Nadu, West Bengal, Kerala, Assam and Puducherry.Let us take a look at the polling dates and number of constituencies of each state: