Kamala Harris and Donald Trump dueled across the swing states Saturday on the final weekend of the tensest US election of modern times, with the Democrat urging voters to "turn the page" on the Republican's scorched-earth brand of politics. Seventy five million people have already cast early ballots as the hours tick down to the Election Day climax Tuesday. The country -- and the world -- could then face a nail-biting wait to know whether Harris becomes the first US
