Campaigning for the Assembly by-elections in the states of Uttar Pradesh, West Bengal, Kerala, Rajasthan, Assam, Himachal Pradesh and Chattisgarh ends on Thursday evening. Polling will be held on Saturday in 31 constituencies spread over these seven states. Out of this, 11 seats are in Uttar Pradesh, 10 in West Bengal, 3 in Kerala, 2 each in Assam, Himachal Pradesh, Rajasthan and one in Chattisgarh.<br/>Polling for the by-election to the Firozabad Lok Sabha seat in Uttar Pradesh will also be held on Saturday. Counting of votes will be held on the 10th of this month.