When will the next US presidential election be held?

US President Joe Biden formally announced his intention to seek a second term in the White House on 25 April, shrugging off concerns about his advanced age to set up a possible rematch with Donald Trump next year.

Mr Biden, 81, reaffirmed his commitment to fighting for freedom and democracy in a video posted to social media, just months after Mr Trump announced his candidacy.

The short film opened with footage of the deadly Capitol riot of 6 January 2021 and warned against the threat posed by “MAGA extremists”, whom he cautioned are hell-bent on cutting social security while offering tax breaks to the wealthy and assaulting abortion rights, oppressing LGBT+ values, limiting voting access and banning books.

The campaign clip also offered a defiant vision of a more tolerant, multicultural America, clearly establishing a positive alternative narrative for the nation at odds with the apocalyptic forecasts of Mr Trump, 77, and his supporters.

While current polling might indicate that a majority of the American public has little appetite for a rematch between the ageing Mr Biden and Mr Trump in 2024, that is looking like the most likely outcome.

However, the former celebrity real estate tycoon is facing ever-greater legal problems and is the subject of a number of criminal and civil investigations, any one of which has the potential to derail his own bid for a belated second term.

Mr Trump became the first president to be criminally indicted in April when he was hit with charges by Manhattan district attorney Alvin Bragg related to the falsification of business records to conceal hush money payments made to porn star Stormy Daniels in 2016.

Since then, he has faced three more indictments: two from Justice Department special