US President Donald Trump leads Democratic rival Joe Biden in the vital battleground of Florida and other US swing states, but Biden has pinned his hopes on Arizona and a trio of Rust Belt states that could take days to count their votes.

Trump is projected to win the key battleground state of Florida after significantly outperforming pollsters’ predictions

Biden leads in Arizona and is locked in a close race in other key states

The election is likely to hinge on results in Pennsylvania and other “Rust Belt” states, where vote counting is expected to stretch for hours or days

Trump has predicted a “big win”, claiming – without evidence – that Democrats are trying to “steal” the election

Biden has called for patience, saying he is “on track” to win the White House race

America looked set for its highest voter turnout in over a century, with more than 100 million votes cast before Election Day