Who's running for US president? See a rundown of the 2024 candidates

Indian-American tech entrepreneur Vivek Ramaswamy, a multimillionaire and former biotech executive, ended his pursuit of the White House on Monday, backing Donald Trump after his underdog campaign in the Republican Party's initial nominating contest in Iowa failed to gain significant traction.

The former president announced his third campaign for the White House on Nov 15, 2022, at his Mar-a-Lago resort, forcing the party to again decide whether to embrace a candidate whose refusal to accept defeat in 2020 sparked the US Capitol attack and still dominates his speeches. (Photo/ Agencies)

The Florida governor officially launched his 2024 presidential campaign on May 24 in a glitch-marred Twitter announcement. Heralding his state as a place "where woke goes to die," DeSantis has framed his campaign around a desire to bring the conservative policies he championed in Florida to the national stage. (Photo/ Agencies)

The former United Nations ambassador and South Carolina governor became the first major GOP challenger to Trump when she kicked off her campaign on Feb 15 in Charleston. The Indian-American is the only woman in the GOP field. The former Trump Cabinet official once said she wouldn't challenge her former boss for the White House in 2024. (Photo/ Agencies)

The former two-term Arkansas governor launched his presidential campaign on April 26 in Bentonville, pledging to "bring out the best of America" and to reform federal law enforcement agencies. He announced his campaign shortly after Trump was indicted by a grand jury in New York and has called for the former president to drop out of the race, saying, "The office is more important than any individual person." (Photo/ Agencies)

President Joe Biden formally announced his reelection campaign on April 25 in a video, asking voters for time to "finish this job." Biden, the oldest president in American history, would be 86 at the end of a second term, and his age has prompted some of his critics to question whether he can serve effectively. (Photo/ Agencies)

Self-help author Marianne Williamson entered the Democratic primary on March 4 in Washington, calling for "a vision of justice and love that is so powerful that it will override the forces of hatred and injustice and fear." During her unsuccessful 2020 presidential campaign, she proposed the creation of a Department of Peace and argued the federal government should pay large financial reparations to Black Americans as atonement for centuries of slavery and discrimination. (Photo/ Agencies)

The Minnesota congressman is the first elected Democrat to challenge Biden for the nomination. After months of calling for a primary challenger, Phillips entered the race himself on Oct 27 with a speech outside New Hampshire's statehouse. While Phillips has been effusive in his praise for Biden, the 54-year-old also says Democrats need younger voices to avoid a nightmare scenario where Trump wins another election next fall. (Photo/ Agencies)

The bestselling author and environmental lawyer announced on Oct 9 that he was ending his Democratic presidential bid and instead launching an independent run. A nephew of President John F Kennedy and son of Attorney General Robert F Kennedy, he initially launched a long-shot bid to challenge Biden for the Democratic nomination on April 19 in Boston. He said in announcing his party switch that he intended to be a spoiler candidate for both Biden and Trump. (Photo/ Agencies)

Republicans: Indian-American Vivek Ramaswamy, former vice president Mike Pence, senator Tim Scott of South Carolina, former New Jersey governor Chris Christie, North Dakota Gov. Doug Burgum, radio show host Larry Elder, businessman Perry Johnson, former Texas congressman Will Hurd and Miami Mayor Francis Suarez. (Photo/ Agencies)