USA: mail-in voting has become one of the key points of the U.S. election, as the country tries to vote under pandemic conditions

VOICED: To events here in the U.S. now and mail-in voting has become one of the key points of the U.S. election, as the country tries to vote under pandemic conditions. Counting the ballots could delay the final result, as states try to manage the numbers coming in - including in swing state Pennsylvania. Sky's Mark Stone reports from Buck's County. SHOWS: security guard talking to a man standing outside polling station in Bucks County, people queuing up to vote, Interview with Bucks County Voter Allison Moore, Interview with Bucks County Voter Michelle Rainier, Interview with Bucks County Voter Gordon Heisler, people waiting in line to vote, peope placing votes into ballot box, Bucks County Spokesperson Larry King showing reporter CCTV monitor of room containing postal vote envelopes, woman sorting postal voting ballots near machine called 'the dragon', voters arrive to cast vote, Interview with Bucks County Spokesperson Larry King, poeple queue outside polling station, person holding ballot papers, Interview with Bucks County Voter Michelle Rainier, cars drive on street, leaves move on branch, people cross street, US flag in ground outside a house. on 3rd November 2020 Bucks County, Pennsylvannia, United States.