US election polls: Who is ahead - Harris or Trump?
Voters in the US go to the polls on 5 November to elect their next president.
The election was initially a rematch of 2020 but it was upended in July when President Joe Biden ended his campaign and endorsed Vice-President Kamala Harris.
The big question now is - will America get its first woman president or a second Donald Trump term?
As election day approaches, we'll be keeping track of the polls and seeing what effect the campaign has on the race for the White House.
Can we trust the polls?
At the moment, the polls suggest that Kamala Harris and Donald Trump are within a couple of percentage points of each other in all of the swing states - and when the race is that close, it’s very hard to predict winners.
Polls underestimated support for Trump in both 2016 and 2020. Polling companies will be trying to fix that problem in a number of ways, including how to make their results reflect the make-up of the voting population.
Those adjustments are difficult to get right and pollsters still have to make educated guesses about other factors like who will actually turn up to vote on 5 November.