Polls open on a Tuesday in early November, though early voting and mail-in ballot initiatives will mean many Americans will have already voted. Counting ballots will go on for weeks in some states.

Once all votes are counted, the results must be certified by Congress. Normally a pro-forma event, in 2021 Mr Trump’s supporters stormed the Capitol building to stop the certification. He is on trial for his alleged role in the attack.

The new president will be sworn into office on the steps of the Capitol building in Washington, DC.