Police registered an FIR against Rai for alleged violation of election laws and breach of poll code of conduct, after Election Commission ordered an enquiry into the matter.
The total polling percentage reached a record 56 per cent by 6 PM, as against less than 43 per cent in last Lok Sabha polls in 2009, even as temperature soared to 43 degrees.
Both urban and rural areas recorded high voting. Members of the minority community were seen coming out in large numbers to vote.
Election authorities said that the final turnout figure may change a bit, as the voters, who were inside the booths at 6 PM deadline, were allowed to cast their votes.
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According to Election authorities, highest turnout of 59 per cent was recorded in Sevapuri assembly constituency while another rural constituency saw 56 per cent polling.
In the most high-profile fight of the 2014 Lok Sabha election, Varanasi saw long queues in areas including Nadesar, Ram Nagar, Beniabagh and Benaras Hindu University campus since 7 AM when voting began.
AAP complained about alleged attempts of booth capturing in some areas.