Sumi Somaskanda
Chief presenter, reporting from California

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No surprises were expected and none arrived in California: Donald Trump and Joe Biden are projected to have won their primaries here handily.

It was always going to be a steep climb for Nikki Haley in the California GOP primary, where only registered Republicans could cast their ballots – a group she has not performed particularly well with.

The exit polling reflected some of the same broad dissatisfaction with President Biden that we’ve seen across the country, particularly on the issues of the economy and immigration.

They also indicate some weakness for Donald Trump among independents on the question of whether they would cast their ballot for him in a general election if he were to be convicted in one of the four criminal cases he’s facing. That's if any of those trials actually conclude before 5 November.

Immigration, the cost of living and inflation were top of mind for the voters we spoke to in California. Americans are still feeling the pinch when it comes to daily expenditures like groceries. And housing here – especially in big cities like Los Angeles and San Francisco – remains eye-wateringly expensive.

Let's take a fresh look at the latest numbers:

• Joe Biden is so far projected by the BBC's American partner CBS to have won Democratic nominating contests in Iowa (which previously held a mail-in vote), plus all 14 states that voted on Tuesday: Alabama, Arkansas, California, Colorado, Maine, Massachusetts, Minnesota, North Carolina, Oklahoma, Tennessee, Texas, Utah, Vermont and Virginia
• Donald Trump is so far projected by CBS to have won Republican nominating contests in 12 states: Alabama, Arkansas, California, Colorado, Maine, Massachusetts, Minnesota, North Carolina, Oklahoma, Tennessee, Texas and Virginia
• Nikki Haley is projected by CBS to have won the Republican contest in one state only - Vermont.

We're still waiting for results from Alaska - which hasn't closed its polls yet - and the Republican race in Utah. And don't forget American Samoa, which isn't a state but a US territory, and where we're just waiting for the results to be confirmed.

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Nikki Haley has been projected to win the Republican primary in Vermont, the BBC's US partner CBS News is reporting.

It's her first win tonight - and her second in total, after Washington DC at the weekend.

Bernd Debusmann Jr
US reporter

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About 52% of the vote has been counted so far in Minnesota - and the percentage of people who voted "uncommitted" stands at 20% with nearly 40,000 voters, a notable rebuke of Joe Biden from Democrats.

Last week, we saw more than 100,000 voters - 12% of the total - cast "uncommitted" votes in Michigan's primary rather than support Biden, part of an organised protest against his handling of the war in Gaza.

The result in Minnesota means that Vote Uncommitted - the group that's arranged the campaign - will pick up at least one delegate at the Democratic National Convention this summer.

“Our humble movement of Democrats uncommitted to Biden’s funding of war in Gaza emerged victorious tonight," Vote Uncommitted Minnesota spokesperson Asma Nizami said in a statement. "Over 35,000 Minnesotans made it clear that Democrats want Joe Biden to change his policies" over the war, Nizami added.

Speaking from his Mar-a-Lago resort in Florida in the last hour, Trump reiterated much of what he has previously said on the campaign trail - and focused on his likely rematch with Joe Biden who he called "the worst president in the history of our country".

The Republican front-runner also spoke of his 2017-2021 term in office as one in which "our country was coming together", reminding voters he had not presided over any new wars, touting his relationships with China and North Korean dictator Kim Jong Un, and claiming he had put the country on a path to energy dominance.

And he claimed that experts say the stock market is performing well in anticipation of his return to office and that world leaders tell him "our country is known as a joke".

He promised to "take back our country", vowing that "November 5 [2024] is going to go down as the single most important day in the history of our country".

But Trump made no mention of Haley during his speech. While he was speaking, our partner CBS News indicated she has a lead in the Vermont primary.

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Further wins are projected for Biden and Trump in their respective nominating contests in California, where polls have just closed, according to our American partner, CBS News.

Voting is now over in California and in the Republican contest in Utah (whose Democratic contest had already closed).

Alaska is now the only US state still voting.

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Just because California leans reliably Democratic doesn’t mean there aren’t interesting story lines to watch here.

How many delegates? 494 Democratic, 169 Republican

Who will do best? Joe Biden will easily win the Democratic presidential primary. Though the state leans blue, there’s a solid base of Republican voters here and a majority appear poised to vote for Trump.

One piece of context: Keep an eye on the vote share that Donald Trump receives in this primary.

Last year, the California Republican Party changed the rules for awarding delegates. Now, if a candidate gets more than 50% of the state wide vote, they get to take all of the state’s GOP delegates, instead of the state awarding them proportionally.

Trump backed the rule change, and critics saw it as a way to make it easier for the former president to blow past his rivals in the primary.

California has 169 Republican delegates up for grabs, and if Trump takes them all, it will be tough for Haley to ever catch him.

Our US partner CBS News has just given us another update on the race in Vermont, where Haley looks to be edging ahead of Trump.

CBS has now characterised the race in Vermont as "likely" Haley, which means a firmer lead for the candidate, though this could still be subject to change.

Haley has only beaten Trump in one primary so far - in Washington DC - so this would be her second win, if confirmed.

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The most interesting contest in California tonight is its US Senate primary to replace the late Dianne Feinstein, who died last year at 90 and set off a heated debate about the advanced age of America’s leading politicians.

It’s one of the most important state races of the year.

California has a top-two primary system, where the two with the most votes advance to the general election regardless of their party.

At first, the race seemed like a showdown between three very high-profile Democrats: Rep. Adam Schiff, one of the leaders of the first impeachment of Donald Trump; Rep. Katie Porter, known for her viral questioning at congressional hearings; and Rep. Barbara Lee, a powerful progressive from the Bay Area.

But then former baseball player Steve Garvey decided to run as a Republican, and threw an, ahem, curveball into the race.

The ex-Los Angeles Dodger player has given Republicans in the state who are disgruntled with Democrats’ political dominance there a champion to rally behind.

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As Donald Trump was speaking just now, we've just had an update from our American partner, CBS News.

It's now characterising the race in Vermont as "leans Haley".

As we've been explaining this evening, a "lean" refers to a slight lead held by a candidate - though is subject to change as results continue to arrive.

Haley has only beaten Trump in one primary so far - in Washington DC - and so is fighting to remain in the race.

Sumi Somaskanda
Chief presenter, reporting from California

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We’ve come to a watch party at the University of Southern California, where students and members of the community are gathering to see the results once polls close at 20:00 local time (23:00 EST; 04:00 GMT).

These are politically-minded and engaged students, so the issues they’ve mentioned to us – democracy, foreign policy, and the US’s image in the world – don’t necessarily reflect what we’ve heard elsewhere in California.

Although the presidential primary isn’t expected to be close, many people here will be watching what happens in the race for the late Senator Dianne Feinstein’s seat.

Anthony Zurcher
North America correspondent

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It may be called Super Tuesday, but the results have not exactly been laden with excitement.

After US voters headed to the polls in 15 states and American Samoa, Donald Trump and Joe Biden remain on course to be the Republican and Democratic candidates for the general election in November.

Just because the results were predictable, however, doesn't mean there aren't things to learn as the dust settles on the largest single-day of voting in the primary calendar.

Click here to read some of my key takeaways so far.

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Our US partner CBS News has projected that Biden has won his primary in Utah.

The Republican primary is still ongoing, with polls there due to close in just over half an hour.

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We've just had a statement from President Joe Biden, who's been sweeping the states that have been voting in Democratic nominating contests (while Donald Trump has done the same in the Republican equivalents).

Biden says millions of Americans have today "made their voices heard", and suggests that votes in his favour show the electorate wants to "fight back against Donald Trump’s extreme plan to take us backwards".

He trumpets the achievements that he says have been made by his administration, including on jobs and wages, and warns that the nation now faces a "clear choice" of whether to continue in the same vein, or to elect his rival in the 2024 contest.

Trump is "focused on his own revenge and retribution", Biden says, and wants to "rip away fundamental freedoms like the ability for women to make their own health care decisions".

He ends by urging Americans to stand up to defend democracy, adding: "To every Democrat, Republican, and independent who believes in a free and fair America: This is our moment. This is our fight. Together, we will win.".

Donald Trump has just taken the stage to celebrate his victories tonight.

"They call it Super Tuesday for a reason. This is a big one," the former president says.

He claims the pundits have told him there's "never been anything so conclusive" and he plans to inspire a turnaround of the country.

Stay with us as we bring you more highlights from his remarks.

Trump is taking the stage at a victory party in Palm Beach in Florida - stick with us for updates or you can watch along by pressing play at the top of this page.

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We've had another projection from our US partner CBS News, which has upgraded its projection for Massachusetts to now be a Trump win.

Francesca Gillett
Live reporter, Washington DC

Well, the results so far tonight are as we expected - and as our North America editor pointed out earlier today, Super Tuesday is looking a lot more like Predictable Tuesday.

For anyone else who's not followed a Super Tuesday in such detail before, I'm told it's not always like this - and there's often a lot more drama afoot.

So far, Republican front-runner Trump has won 10 states, and another is indicated to be leaning his way.

But could there be a hint of a surprise coming? Here in our newsroom, we're refreshing the vote count in Vermont, where Nikki Haley is staying neck-and-neck with Trump.

Another projection from our US partners CBS News, who have a projection from Minnesota...

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