LUCKNOW, Oct. 28 -- Bharatiya Janata Party (BJP) candidate Umesh Dwivedi established a commanding lead over SP's Sushil Kumar in the Lucknow division teachers' MLC constituency, polling 7,189 votes against his rival's 3,537 after the first round of counting on Tuesday, a margin of 3,652 votes. Counting at Ramabai Rally Sthal proceeded slowly, with the bundling of ballot papers for the Lucknow graduates' constituency still underway. The exercise witnessed tension as SP workers alleged that BJP supporters were being allowed inside the counting centre while they were stopped at the gates. The rival groups traded slogans and insults, prompting heightened security. SP chief Akhilesh Yadav questioned the delay in counting in a social media post, while the party alleged that unauthorised BJP supporters were being allowed inside the venue to influence the process. SP candidate Kanti Singh also alleged discrepancies between the number of votes recorded and the ballot papers recovered from the boxes, claiming that candidates had not been given copies of the form. The administration had yet to respond to the allegation....