Francesca Gillett
Live reporter, Washington DC

It's been more than 24 hours since we started our live coverage of Super Tuesday - and while it was the most predictable one yet, there were a few surprising moments along the way.

We now can be almost certain that November's election will be Trump vs Biden - a rematch of 2020.

As predicted, Donald Trump scooped up nearly all primaries last night, except Vermont, which his last remaining rival Nikki Haley won. Joe Biden also did a sweep, but lost American Samoa (a US territory, not a state) by 11 votes.

This morning, we got news that Haley was quitting the race. She refused to endorse Trump, instead saying she wished him well but that he needed to earn the votes of people who didn't support him.

So now both Biden and Trump are trying to attract her voters. Will they succeed? These are the people they need to target.

Other moments along the way have been: political titan Mitch McConnell endorsing Trump despite their past clashes; results coming in some key Senate primary races like California's; the man who beat Biden by 11 votes telling us he hopes it puts pressure on the president; and of course Haley's Vermont win.

For the results in full, head here - or for our key takeaways from the night, that's here. And want to know what voters make of it all? We've got you here.

Image source, Getty Images

The field for Democratic presidential candidates just grew a little smaller - though you wouldn't be alone if you couldn't name any other candidates than Joe Biden - with US congressman Dean Phillips suspending his campaign.

He made the announcement on Wednesday after a poor showing on Super Tuesday, a familiar pattern that followed his campaign which for months had existed on the margins.

The 55-year-old millionaire businessman and gelato company co-founder unsuccesfully attempted to offer Democrats a younger alternative to the president.

He is now endorsing Joe Biden's bid for re-election.

Sam Cabral
US reporter

Image source, Getty Images

As well as the Republican and Democrat candidate, any independents hoping to run are required to collect thousands of signatures by a given deadline in order to access the presidential ballot in individual states.

Independent candidate Robert F Kennedy Jr has has so far collected the needed signatures to get on the ballot in Utah, New Hampshire and Hawaii. Last night, according to his campaign, Nevada joins that list.

The 70-year-old environmental lawyer and nephew of former President John F Kennedy has vowed to get on the ballot in all 50 states - but he has a long road ahead of him over the next eight months.

Initially launching his bid as a Democrat, Kennedy struggled to gain traction, in part due to his promotion of anti-vaccine conspiracy theories. Three months ago, he declared an independent run that broke free from the "bankrupt two-party system".

Other candidates who could be on voters' ballots this November include Cornel West, an outspoken black progressive philosopher and activist, and Dr Jill Stein, who has run for president twice before on the Green Party ticket.

We've been considering where Nikki Haley supporters might go in November's election. Some young Republican voters spoke to the BBC about their disappointment in the direction their party is headed.

Patrick Quinn, 17, who campaigned for Haley, says he doesn't feel like he aligns with a Republican Party under the leadership of Donald Trump.

"It wasn't so long ago that we were a party with more compassion," Quinn says, adding that he now feels "politically homeless".

Kate Lipman, a 27-year-old lifelong Republican who voted for Trump in 2020, says she changed her mind after the Capitol riot on 6 January 2021.

"I feel the Republican Party has been broken down by Trump," Lipman tells BBC World Service. "He's going to have to do a lot of work for Haley supporters to back him."

"I don't think Trump can do anything to earn my vote unless he changes who he is," she says, adding she plans to either vote for Joe Biden in November, or write Haley's name on the ballot in protest.

Kayla Epstein
Reporting from West Palm Beach

Last night we heard dramatic words from the top two presidential candidates, who framed the stakes of the election in existential terms for the nation. And their supporters in Florida echo those sentiments.

Suzy Wilkoff, 67 of West Palm Beach, thinks a second Trump presidency would be bad for the country.

“If it’s Biden versus Trump, Biden is definitely more qualified. He has an army of people behind him and they truly do care about the country,” she said.

But John Skeadas, 70, thinks if Trump had won election in 2020 "we would be living in a remarkably better country".

Image source, Ozzie Palomo

Nikki Haley still has a role to play in the Republican Party, one of her supporters has just told the BBC's Newshour programme.

Lobbyist Ozzie Palomo, who helped raise funds for Haley's recent campaign, said Haley could provide a valuable voice for more moderate Republican candidates during the election.

However, he conceded it was unlikely that Haley would agree to join her former rival Trump’s presidential campaign as his vice-president - but added he "wouldn’t take anything off the table".

"Politics makes for strange bedfellows. And, I think, if it was advantageous for President Trump, he would certainly consider it.

“The question is whether Nikki Haley would want to do that, She is only 51, she has a bright future ahead of her."

"I think she is positioning herself to be a future leader and the heir-apparent going into 2028," he adds.

Image source, EPA

Now that Nikki Haley's dropped out, Joe Biden and his campaign team have began ramping up their attacks on Donald Trump ahead of a November rematch.

An email sent from the Biden-Harris campaign this morning described Trump as a "wounded, dangerous and unpopular candidate".

The email admitted, as polls suggest, that a Trump-Biden rematch will be "very close". It also celebrated achievements it said Haley's backers would be more inclined to support, such as supporting abortion access and lowering the cost of prescription drugs.

However, the email was a bit misleading on some of its other claims. It said that Biden is "consolidating" support from black and Latino voters, the coalition that helped send him to the White House four years ago. But multiple recent polls suggest that opposite - that Biden is actually losing support in large numbers from these groups.

Image source, Getty Images

Elon Musk, one of the world's richest men with a net worth exceeding $200bn (£156bn), wrote on X, formerly Twitter, that he will not be endorsing "either candidate for US president".

The move may surprise some who follow Musk's social media posts, where he often endorses far-right conservative viewpoints. Yesterday he falsely alleged that the Biden administration was "importing voters" who he described as "unvetted illegal immigrants".

By refusing to endorse a candidate, Musk also withholds his vast and loyal fan base.

The tweet, published less than an hour after Nikki Haley announced her exit from the race, gained over 10 million views in about as much time.

Holly Honderich
US reporter

Image source, Getty Images

Nikki Haley has told Donald Trump it's up to him to win over her voters - hundreds of thousands of Americans who cast their ballot for her over the past two months, despite knowing a Trump victory was nearly inevitable.

So who are those voters? Experts tell me they fall roughly into three categories: Never-Trumpers, independents, and Trump nose-holders - those who want the Republican party to move on, but who are inclined to stick within party lines anyway.

We still have eight months left to see if and how both Donald Trump and Joe Biden try to pull these voters on side. Some, the so-called "double haters" who are unhappy with both candidates in this rematch may be more likely just to sit the election out.

This will matter in November: a lot of Haley voters are the college-educated suburbanites who have a history of deciding US presidential elections.

More from me here.

It's not just Trump and Biden who are now scrambling to attract Haley's supporters. The Democratic National Committee (DNC) has quickly moved to appeal to Nikki Haley's backers.

In a written statement, the DNC's chair, Jaime Harrison, said: "Trump has made it clear that he does not want Nikki Haley's supporters."

"For them, there is only one candidate left... Joe Biden," the statement said.

Haley's against-the-odds campaign success was largely attributed to moderate Republicans and independents who handed her two primary victories in Washington DC and Vermont, and who also gave her double-digit polling numbers in multiple states.

Experts say this middle-of-the-road bunch will be the determining factor in a closely contested Trump-Biden rematch.

Mike Wendling
US reporter

Image source, Reuters

Yesterday's Super Tuesday was the last set of contests overseen by this chair of the Republican National Committee - Ronna McDaniel.

She's stepping down and Friday is her last day in the office. Her co-chair Drew McKissick is also stepping down.

Party chairs – there are two Republican co-chairs, one man and one woman – support campaigns and drive fundraising.

McDaniel, 50, is a long-time Trump supporter, despite being the niece of a notable Trump opponent, Utah’s Republican Senator Mitt Romney.

But she has come under increasing pressure after Trump’s loss in 2020 and the party’s underwhelming performance in 2022’s midterm elections. More recently, the party has struggled to match the Democrats in fundraising figures.

The party will now choose their replacements in an election. Trump’s favoured candidates are his daughter-in-law, Lara, and the party’s North Carolina chair Michael Whatley.

Speaking earlier, Haley congratulated Trump and said she wished him well, as she would "wish anyone well, who would be America's president".

But she stopped short of endorsing him fully - and even quoted UK Prime Minister Margaret Thatcher as she urged people to "always make up your own mind". Watch more below:

Image source, Getty Images

Shortly after Nikki Haley formally quit, the Republican leader in the US Senate Mitch McConnell quickly offered Donald Trump his endorsement.

McConnell had, up until now, withheld his support from any of the Republican candidates.

He and Trump have clashed in the past, including when McConnell said Trump was "morally responsible" for the Capitol riots, and when Trump blamed McConnell for failing to get rid of an Obama-era health insurance programme.

"It is abundantly clear that former President Trump has earned the requisite support of Republican voters to be our nominee for president of the United States,” McConnell said in a statement to The Washington Post.

As the longest-serving Senate leader in history, and one of the most powerful Republicans in Washington, the Kentucky senator's endorsement of Trump should help to unify the party. McConnell will step down as Senate minority leader in November.

Kayla Epstein
US reporter

The voters I spoke to in West Palm Beach, Florida this week held a range of political views. But despite their famous neighbour, Donald Trump, some of them were less than enthusiastic about a rematch between him and Joe Biden.

Lisa, a 36-year-old who considers herself an independent, disliked both candidates. She told me outside the local library that she felt America’s leaders only care about “their own agenda".

“I don’t think Biden is really fit to run the country at this point,” she said, referring to his age - 81.

As for Trump, “I don’t like his personality either,” Lisa said.

She told me she wasn’t sure how she will vote in November.

Image source, Reuters

While Haley was speaking, Trump posted on Truth Social , externalreacting to his overnight success - an all-but-confirmed position as a presidential nominee. Like Biden, he makes a bid for Haley's supporters.

Vermont was an open primary, meaning that Democrats and independents (not just people registered with the Republican Party) were able to cast their votes for Haley in a bid to hurt Donald Trump.

Although his post was shared online just after Haley began speaking, Trump added: "At this point, I hope she stays in the “race” and fights it out until the end!"

Trump refers to his success in yesterday's voting extravaganza as "by far, the most successful Super Tuesday in HISTORY", adding he "would further like to invite all of the Haley supporters to join the greatest movement in the history of our nation".

Image source, EPA

"It takes a lot of courage to run for president – that’s especially true in today’s Republican Party, where so few dare to speak the truth about Donald Trump," President Joe Biden said in a written statement shortly after Nikki Haley's formal announcement to suspend her campaign.

Biden then appealed to Haley's supporters, telling them that "there is a place for them in my campaign".

Haley exceeded expectations as the last Republican candidate standing against Trump, largely propped up by moderate Republicans and independent voters looking for a Trump alternative.

Biden's campaign has started courting those voters immediately.

Nikki Haley has suspended her presidential campaign, leaving Donald Trump as the last Republican in the race.

Watch the moment she told her supporters that it's now up to Trump "to earn the votes of those in our party and beyond it who did not support him".

Talking about the crushing impact of national debt, Haley speaks about the need for "smaller federal government".

"Our congress is dysfunctional and only getting worse, filled with followers not leaders. Our world is on fire because of America's retreat," she tells supporters.

She goes on to say "standing by our allies" is "a moral imperative... if we retreat further, there will be more war not less. We must bind together as Americans and turn away from division".

Haley concludes her speech with a special mention of the "many women and girls who put their faith in our campaign"..

Holly Honderich
Reporting from Washington, DC

For weeks, speculation has swirled as to when Nikki Haley might finally call it quits and - more interestingly - if she would endorse Donald Trump when she did.

The answer so far is a resounding no.

Haley said she wished Trump well, just as she would "anyone" who becomes president well - some seriously pointed wording. But she then passed the ball back to Trump, saying it was up to him to "earn the votes" of all Republicans who did not support him, a group that includes her.

The comments seemed to be a reference to Trump's disinterest - so far - in doing so. He has angered Haley voters in recent weeks by saying they would be "permanently barred" from his Make America Great Again movement if they donated to his competitors.

For today at least, it sounds like Haley will withhold any endorsement of Trump unless he changes his tune.

Image source, Reuters

Haley tells the crowd she sought the honour of being the country's president.

Although she isn't going to win the nomination, she says being a US citizen is a privilege itself.

Shortly after, she admits Donald Trump would likely become the Republican nominee, adding: "I wish you well."

However, Haley does not offer the former president her full endorsement, something many political observers were watching for.

"Never just follow the crowd. Always make up your own mind," Haley says, quoting Margaret Thatcher when asked if she would support the Republican nominee.

"It is now up to Donald Trump to earn the votes of those in our party and beyond it, who did not support him, and I hope he does that."