US President Donald Trump and his Democratic challenger Joe Biden have spent the final hours of the White House race delivering their closing pitch to voters in critical states. Mr Biden campaigned in Pennsylvania and Ohio, as Mr Trump toured the voting battlegrounds of Wisconsin, Michigan, North Carolina and Pennsylvania.
National polls suggest a firm lead for Mr Biden in Tuesday's election. But his lead is narrower in the handful of states that could decide the result. Nearly 99 million people have already cast their ballots in early voting, putting the country on course for its highest turnout in a century.