Early voting in the US election has now topped 70 million, more than half of the total turnout in 2016.
Donald Trump and Joe Biden have presented themselves as candidates with very different visions of what the US could be.
We spoke to one voter, Erica, who isn’t sure who she agrees with.
Her aunt Kay is backing Biden, while her friend Senen is voting for Trump. Watch as they both make the case for their candidate.
Nearly 48 million of the 70 million votes already cast have been by post (the other option is in-person voting, where people cast their ballots at a polling station ahead of election day.)
But Donald Trump and some of his supporters have repeatedly tried to undermine the validity of postal voting.
On Tuesday the president said it would be “inappropriate” to take extra time to count mail-in votes, stating: “It would be very, very proper and very nice if a winner were declared on November 3, instead of counting ballots for two weeks, which is totally inappropriate and I don’t believe that that’s by our laws.”
The huge number of ballots means they could take days or even weeks to count, experts say. However, the president is wrong to suggest it’s illegal: states have until 8 December – known as the “safe harbor” deadline – to finalise their tallies.