As of April 2024, more than 190 candidates have filed with the Federal Election Commission (FEC) to run for the Democratic presidential nomination in 2024. Following the withdrawal of President Biden on July 21, 2024, the race became an open contest to be decided at the Democratic National Convention.

"Trump, Haley, DeSantis and others will compete in WA's March 12 presidential primary". The Seattle Times. Retrieved January 9, 2024. ^ "2024 Presidential Preference Election Filed Candidates" (PDF). Arizona Secretary of State. Retrieved December 11, 2023. ^ "Candidate List, General Primary – 3/19/2024". Illinois State Board of Elections.

After voting on Super Tuesday, the Republican presidential primary narrowed to a single major candidate. Former President Donald Trump became the apparent nominee after former U.N. Ambassador Nikki Haley exited the race.

While the candidates for the two major parties are nearly locked in, a slate of third-party candidates, including independent Robert F. Kennedy Jr., Green Party member Jill Stein, and Libertarian Chase Oliver, is still holding on. At the beginning of the election, nearly two dozen candidates started out in the race, but seven remain.