Trump and Biden locked in tight races in US election battleground states

Ballots being counted in the state of New Hampshire, which has been won by Joe Biden (Kristopher Radder/The Brattleboro Reformer via AP)

President Donald Trump and Democratic challenger Joe Biden are locked in tight races in battleground states after Americans voted in the US election.

Mr Biden picked up the first battleground state of the night, New Hampshire, a small prize that Mr Trump tried to steal from Democrats. But races were too early to call in the most fiercely contested and critical states on the map, including Florida, North Carolina, Georgia and Pennsylvania.