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With election day here, all eyes are on a group of US states that could help decide whether Kamala Harris or Donald Trump is voted into the Oval Office.
Ms Harris and Mr Trump have focused most of their energy in recent weeks on campaigning in swing states including Pennsylvania and Michigan in an effort to secure victory.
Swing states, also known as battleground states, are those that could "swing" to the Democrats or Republicans in an election. They have often been won narrowly by one candidate or the other in previous presidential elections.
The US uses the electoral college system, in which state-appointed electors cast votes for one of the candidates, with 270 votes needed to win. With a certain number of "safe" states voting reliably Democrat or Republican in each election cycle, swing states play a major role in the outcome of the vote.
