Presidential primaries and caucuses are being organized by the Democratic Party to select the delegates to the 2024 Democratic National Convention, to determine the party's nominee for president in the 2024 United States presidential election. The elections will take place in most U.S. states, the District of Columbia, five U.S. territories, and Democrats Abroad, and will be held between January and June that year. Incumbent President Joe Biden is running for re-election with Vice President Kamala Harris returning as his running mate. On March 12, Biden secured enough delegates for re-nomination and was declared the presumptive nominee of the Democratic Party.

The 2024 Democratic National Convention is a presidential nominating convention in which delegates of the United States Democratic Party will select the party's nominees for president and vice president in the 2024 United States presidential election. It is scheduled to be held August 19 to 22, 2024, at the United Center in Chicago, Illinois.