The 2024 United States presidential election will be the 60th quadrennial presidential election, set to be held on Tuesday, November 5, 2024. Voters in each state and the District of Columbia will choose electors to the Electoral College, who will then elect a president and vice president for a term of four years.

The incumbent president, Joe Biden, a member of the Democratic Party, initially ran for re-election and became the party's presumptive nominee, facing little opposition. However, Biden's performance in the June 2024 presidential debate intensified concerns about his age and health, and led to calls within his party for him to leave the race. Although initially adamant that he would remain in the race, Biden ultimately withdrew on July 21 and endorsed Vice President Kamala Harris, who became the party's nominee on August 5. Harris selected Tim Walz, the governor of Minnesota, as her running mate. Biden's withdrawal makes him the first eligible incumbent president since Lyndon B. Johnson in 1968 not to run for re-election, and the first to withdraw after securing enough delegates to win the nomination. Harris is the first nominee who did not participate in the primaries since Hubert Humphrey, also in 1968.

Biden's predecessor, Donald Trump, a member of the Republican Party, is running for re-election for a second, non-consecutive term, after losing to Biden in 2020. Although more than a dozen candidates sought the nomination, only Trump and four others made it to the primaries.