The 2024 presidential race is taking shape, with former President Donald Trump mounting a comeback bid for the White House, facing GOP competition from former South Carolina Gov. Nikki Haley, former Arkansas Gov. Asa Hutchinson, South Carolina Sen. Tim Scott and others.
Here's an updated list of who is running for president in 2024 and a brief look at the potential contenders who have not yet confirmed their plans.
This list also includes those politicians who have definitively ruled out a campaign.
President Joe Biden announces he's running again
President Joe Biden has announced he will seek a second term in office, confirming a reelection bid he has long previewed -- as he faces a possible rematch with Trump next November.
Biden announced his 2024 campaign in a pre-recorded video on April 25, the four-year anniversary of his 2020 announcement.
"The question we are facing is whether in the years ahead we have more freedom or less freedom. More rights or fewer," he said in the video, titled "Freedom," which was posted to his social media account.
"This is not a time to be complacent. That's why I'm running for reelection."
Biden, 80, has repeatedly said he intended to run in 2024 barring some major issues such as his health.
"[M]y intention has been from the beginning to run. But there's too many other things we have to finish in the near term before I start a campaign," he told ABC News anchor David Muir at the White House in February.
Biden told Muir in December 2021 that the possibility of a rematch with Trump wouldn't dissuade him.
"Why would I not run against Donald Trump for the nominee? That'll increase the prospect of running," he said.
Donald Trump, Republican
Trump, 76, formally launched his third bid for the White House on Nov. 15, following the 2022 midterms, which did not meet Republican expectations.
Trump announced his campaign from his Mar-a-Lago estate in Palm Beach, Florida. It didn't come as a surprise, given that Trump had been hinting for months that he would make a run.
"America's comeback starts right now," he said, describing the U.S. as "in decline" and touting his administration as a "golden age."
However, Trump's third run for the White House comes as he faces multiple investigations -- he denies wrongdoing -- and has become increasingly estranged from some other leading figures in the GOP in the wake of Jan. 6, his 2020 election lies and other controversies and scandals.
While polling shows he remains popular with many voters in the party, others say they want another nominee.
Ron DeSantis, Republican
The Florida governor on May 24 filed paperwork with the Federal Election Commission to run for president. He kicked off his campaign in Iowa on May 30.
"Our great American comeback starts by sending [President] Joe Biden back to his basement in Delaware," he declared then, going on to criticize the "failed policies" flowing out of Washington -- on crime, on the southern border, on energy production and on the state of the economy, including the cost of living, the "dereliction of duty" in the withdrawal from Afghanistan and more.
DeSantis, 44, was reelected to second term by a near 20-point margin in November. He entered the GOP primary field as Trump's biggest rival, according to observers and voter surveys, though Trump has still led in early polling.
A recent ABC News/Washington Post poll found that among the six best-known candidates, Trump clinched 51% support from Republicans and GOP-leaning independents while DeSantis garnered 25%. Still, a majority of those voters said they'd be satisfied with either Trump (75%) or DeSantis (64%) as their presidential nominee.
Mike Pence, Republican
Former Vice President Pence launched his 2024 campaign on June 7 with family and supporters in Iowa.
Pence, a onetime Trump loyalist, broke with Trump over Trump pushing him to overturn the 2020 election results. In his kickoff speech, he stressed his differences with Trump on Jan. 6.
"The American people deserve to know that on that day, President Trump also demanded that I choose between him and the Constitution. Now, voters will be faced with the same choice. I chose the Constitution and I always will," Pence said, later noting how his son, a Marine, has sometimes reminded him they both made the same pledge as public servants.
Without naming Trump specifically, Pence said that "anyone" who would disregard the Constitution should "never" be president.
Robert F. Kennedy Jr., Democrat
Kennedy, 69, announced his bid for the 2024 Democratic presidential nomination at the Boston Park Plaza in Boston on April 19.
"I've come here today to announce my candidacy for the Democratic nomination for President of the United States," he during his campaign launch, noting that the aim of his campaign, and presidency, would be to "end the corrupt merger of state and corporate power."
As the child of Robert and Ethel Kennedy, the younger Kennedy, an attorney and activist, has been discussing the possibility of a run with the benefit of built-in name recognition, given his family's legacy within the Democratic Party.
However, he is also likely to bring a dose of controversy to the campaign trail given his well-documented efforts to discredit vaccine use. Online, he has fueled conspiracies regarding vaccine mandates throughout the COVID-19 pandemic and publicly voiced polarizing positions at an anti-vaccine mandate rally in Washington, D.C.
The candidate has espoused vaccine hesitancy since the 2000s, has become one of the most prominent voices in the anti-vaccine movement, according to experts, as the founder of Children's Health Defense, a nonprofit organization known mainly for its anti-vaccine efforts.
Nikki Haley, Republican
Haley, 51, announced her presidential bid in a video released on Feb. 14, a day ahead of a formal kickoff on Feb. 15 in Charleston.
Haley, who also served as a U.S. ambassador to the U.N. in the Trump administration, is the first high-profile Republican to challenge Trump.
In her announcement video, Haley, the daughter of immigrants, highlighted her heritage as a South Asian woman and touted her hopeful view of what America can offer.
"My mom would always say, 'Your job is not to focus on the differences but the similarities.' My parents reminded me and my siblings every day how blessed we were to live in America," Haley said.
She underscored her credentials as a former leader of the Palmetto State, stressing its resilience, but most of all she said there was a major need for change in the GOP's candidates.
"Republicans have lost the popular vote in seven of the last eight presidential elections. … It's time for a new generation of leadership," she said.
Haley was elected as the first female governor of South Carolina in 2010, stepping down in 2017, during her second term, to serve as a Trump ambassador until 2018.
Doug Burgum, Republican
North Dakota Gov. Doug Burgum on June 7 jumped into the 2024 presidential race, pitching himself to voters as a candidate ready to bring small town values to the big stage.
"We need a leader who's clearly focused on three things: economy, energy and national security," he said to cheers at an event in Fargo.
Burgum, a former software CEO, successfully ran against the Republican Party's preferred candidate to win the 2016 gubernatorial primary and easily won reelection in 2020.
Vivek Ramaswamy, Republican
Ramaswamy, a 37-year-old multimillionaire entrepreneur who founded a major biotech company, announced on Feb. 21 that he is running for president as a Republican.
"We are in the middle of this national identity crisis, Tucker, where we have celebrated our diversity and our differences for so long that we forgot all the ways we're really just the same as Americans, bound by a common set of ideals that set this nation into motion 250 years ago," Ramaswamy told Fox News' Tucker Carlson.
When asked what his message to voters will be, Ramaswamy said that "we need to put merit back into America in every sphere of our lives" -- which includes immigration policy and affirmative action, the latter of which he argued was "a national cancer."
In a campaign video shared on Twitter, he said: "We still agree on our nation's most fundamental principles, at least most of us do. Yet the goal of the ruling party in this country is to convince us that we are divided."
The Indian-American entrepreneur is also the author of "Woke, Inc.: Inside Corporate America's Social Justice Scam."
Chris Christie, Republican
Former New Jersey Gov. Chris Christie announced a 2024 Republican bid for the presidency on June 6.
Christie, who also ran in 2016, has made the argument that he might very well be the only Republican willing and able to bring the force needed to knock off Trump, who is enjoying a sizable lead in the race for the nomination.
"There's only one lane to the Republican nomination for president and Donald Trump is at the head of it and you have to go right through him and make the case against him. And that's what I intend to do," Christie told ABC News' George Stephanopoulos the day after his campaign launch.
Francis Suarez, Republican
Francis Suarez, the mayor of Miami who has been mulling a run for the Republican presidential nomination, on June 14 filed with the Federal Election Commission to signal his candidacy.
Suarez previously highlighted his profile and backstory as the Hispanic son of a former Miami mayor and the Republican executive of a major American city, who was easily reelected in 2021. He touted his policy credentials on the economy and anti-crime measures and criticized the Biden administration for its Middle East and China policies.
Suarez has also previewed his case to occupy a potential third lane in a Republican primary that has so far largely featured Trump and DeSantis' conservative styles. Amid a surge in Hispanic support for the GOP in some parts of the country, including Florida, Suarez offers a more centrist tone on migration and climate issues than his state's governor and Trump, the party standard-bearer.
In New Hampshire on April 18, Suarez said a relationship with the Hispanic community would be critical for the Republican nominee in 2024. More than 70% of the city of Miami is Hispanic, according to the latest census data.
Larry Elder, Republican
Edler, 70, a conservative talk radio host, announced on April 20 that he was seeking the Republican nomination for president.
The long shot candidate first ran for elected office in 2021 in the recall election to replace California Democratic Gov. Gavin Newsom. Newsom survived the recall effort by a wide margin, but Elder placed first among the replacement candidates.
In a tweet, Elder said, "America is in decline, but this decline is not inevitable. We can enter a new American Golden Age, but we must choose a leader who can bring us there. That's why I'm running for president."
Marianne Williamson, Democrat
Williamson, 70, first wrote in an email to donors on Feb. 26 that would formally announce on March 4 that she is running for president as a Democrat, in a long shot primary challenge to Biden.
Williamson is a bestselling self-help book author who first ran for president in 2020 on a pacifist and progressive platform.
She dropped out of that race before any primaries were held, but she outlasted several other serious contenders with impressive electoral resumes, including now-Vice President Kamala Harris, who at the time was a senator from California.
Williamson has advocated for solving foreign conflicts without military intervention and embraced progressive platforms like so-called "Medicare for All" and a $15 minimum wage.
She also became a viral sensation for infusing her campaign with language from her career as an author, warning Trump in 2020 that "I'm going to harness love for political purposes. I will meet you on that field, and sir, love will win."
"We're all here because we care about this country. But we're all here, or at least many of us are, because we are upset about this country, we're worried about this country," she said in her launch speech. "It is our job to create a vision of justice and love that is so powerful, that it will override the forces of hatred and injustice and fear."
Williamson also noted the conventional wisdom that she will face a nearly impossible task of unseating Biden in a primary, casting herself as a fighter against the establishment.
"I'm not naive about the forces which have no intention of allowing anyone into this conversation who does not align with their predetermined agenda," she said.
Asa Hutchinson, Republican
Hutchinson, 72, announced he would run for president on April 2 during an interview on ABC's "This Week" but said an official launch would not take place until later in April in his home state.
"I am going to be running. And the reason is, I've traveled the country for six months, I hear people talk about the leadership of our country. I'm convinced that people want leaders that appeal to the best of America, and not simply appeal to our worst instincts," Hutchinson told "This Week" co-anchor Jonathan Karl.
The former governor has emerged as a Trump skeptic within the Republican Party, and indicated to Karl that he would seek to veer away from culture wars and return to a party centered around the idea of small government -- though he insisted he's not "anti-Trump," despite calling on the former president to drop out of the race over his indictment in New York City.
"When I say 'non-Trump', I want to be able to speak to the Trump voters. I want to be able to speak to all of the party and say, 'This is the leadership that I want to provide, and I think that we need to have border security. I think we need to have a strong America; we need to spend less at the federal level.' These are the values that I represent," Hutchinson said.
Hutchinson expressed hope that his personal style in early primary states could pay dividends.
"It's still about retail politics in many of these states and also, this is one of the most unpredictable political environments that I've seen in my lifetime. So my message of experience, of consistent conservatism and hope for our future in solving problems that face Americans, I think that that resonates," Hutchinson told Karl.
Tim Scott, Republican
Scott, 57, formally announced his candidacy on May 22 at his alma mater Charleston Southern University.
Scott, South Carolina's first Black senator and the Senate's sole Black Republican, shared an optimistic message of faith in the American dream as he launched his campaign.
"We live in the land where it is possible for a kid raised in poverty by a single mother in a small apartment to one day serve in the People's House and maybe even the White House," Scott said.
He joined the race with more cash on hand than all his Republican competitors, but was polling in the low single digits.
Will Hurd, Republican
Former Texas Rep. Hurd, 45, said on June 22 that he is running for president.
"We live in complicated times and we need common sense," Hurd said on "CBS Mornings," pointing to what he called "generational, defining challenges" such as China's rising global influence and the economic drag from inflation.
"To be frank, I'm pissed that we're not talking about these things. I'm pissed that our elected officials are telling us to hate our neighbors," he said.
"America is better together," he said, "and way more unites us than divides us."
Hurd acknowledged he was a "dark horse candidate" but said he wouldn't be "afraid of Donald Trump" in the primary race, unlike other candidates. What's more, he said, his past experience as a candidate shows he can connect with voters and expand the GOP's appeal.
Hurd was one of two Black Republicans in the House during most of his 2015-2021 tenure.
Perry Johnson, Republican
A 75-year-old Michigan businessman, Johnson launched his presidential campaign for the 2024 Republican nomination amid the 2023 Conservative Political Action Conference that began on March 1.
Johnson took third in CPAC's straw poll for presidential picks, with nearly 5% of the vote. While he polled behind Trump and Florida Gov. Ron DeSantis, he was ahead of Haley and others.
While Johnson has no experience in elected office, he has a long career in business in Michigan. with almost 30 years of experience in the quality standards field. Two of his companies -- Perry Johnson Registrars, and Perry Johnson, Inc. -- both can certify businesses as meeting certain industry standards.
Before CPAC, his most notable political bid was when he ran for governor in Michigan in 2022 but was removed from the ballot before the Republican primary due to what state officials found to be fraudulent and invalid petition signatures.
Steve Laffey, Republican
The former mayor of Cranston, Rhode Island, Steve Laffey announced his candidacy for president on Feb. 2.
In a statement, he said he wanted to confront the country's issues.
"Our country has done the equivalent of using Band-Aids in place of major surgery. Somehow, we have 'gotten by,'" he said. "For the first time in a generation, we must directly confront our problems."
Laffey is a long shot for the Oval Office, given his relative lack of name recognition or statewide or federal experience.
He previously made a run for Senate in 2006 in Rhode Island, against Republican Lincoln Chafee, who was ultimately defeated by Democrat Sheldon Whitehouse.
Ryan Binkley, Republican
A Texas-based businessman and pastor, Ryan Binkley launched his White House bid in April.
"I'm in this race because so many people are unseen. And right now our party is doing the same lineup as before," Binkley argued in an appearance on "GMA3" in August. "They're running the same playbook. If we only want 46% of the vote -- it's like we're four yards short of a touchdown. We keep running the same play over and over again. I'm saying we've got to throw out that playbook."
Cornel West, third party
Philosopher and political activist Cornel West, 70, announced on June 5 that he's running for president with the left-wing, populist People's Party.
While he acknowledged that his bid is a long shot, he said in a Twitter announcement video that "I have decided to run for truth and justice."
"I enter in the quest for truth. I enter in the quest for justice. And the presidency is just one vehicle to pursue that truth and justice, what I've been trying to do all of my life," he said.
West's major issues include broadening government-provided health care under "Medicare-for-all" and ending foreign military aid.
Who isn't running
Maryland Gov. Larry Hogan on March 5 became the first major Republican mulling a presidential bid to say he will not run in 2024.
Hogan said in a statement that he would not "risk being part of another multicar pileup that could potentially help Mr. Trump recapture the nomination," as Trump did in 2016 when he won the GOP nomination amid a splintered field.
Former Secretary of State Mike Pompeo on April 14 became another high-profile Republican to announce he wouldn't be seeking the party's nomination.
"It is simplest, and most accurate, to say that this decision is personal," Pompeo said in a statement. "This is not the right time for me and my family."
"There remain many more opportunities for which the timing might be more fitting as presidential leadership becomes even more necessary," he continued.
And on June 5, New Hampshire Gov. Chris Sununu said he will not run -- in order to keep the field of Republican candidates less crowded so Trump is less likely to win.
"The stakes are too high for a crowded field to hand the nomination to a candidate who earns just 35 percent of the vote, and I will help ensure this does not happen," Sununu wrote in a column in The Washington Post.
ABC News' Tal Axelrod, Chris Boccia, Libby Cathey, Adam Carlson, Hannah Demissie, Lalee Ibssa, Mariam Khan, Soo Rin Kim, Will McDuffie, Isabella Murray, Oren Oppenheim, Rachel Scott, Brittany Shepherd, Will Steakin, Leah Vredenbregt and Alisa Wiersema contributed to this report.