Our live coverage has ended - you'll be able to follow all the results in our election day page from Tuesday morning here
It's the final day of campaigning in the US midterms, where key elections will determine which party controls Congress for the rest of Donald Trump's presidency - see how these elections could reshape US politics
The Supreme Court has rejected Trump's attempt to sideline thousands of ballots in California that he alleged may have been issued to non-American citizens - here's what you need to know
Elsewhere, millions of Americans have already voted, with a new midterm record set in Georgia, where a third of all registered voters have cast their ballots already
Trump's Republican party currently controls both chambers of Congress - the Senate and the House of Representatives. Democrats are hoping to flip enough seats to win a majority
What's up for grabs? All 435 seats in the House; 35 of the 100 seats in the Senate; and some state-level politicians, including governors - read our basic guide
Image source, ReutersTrump is finishing his midterm campaigning with a speech outside the Lincoln Memorial Reflecting Pool in Washington DC.
The pool has been plagued for problems for years, and recently has needed to be drained repeatedly.
We bring you the latest from his speech.
Image source, Getty ImagesWhen US voters head to the polls, they will choose members of Congress - made up of the House of Representatives and the Senate.
The Republicans currently hold majorities in both chambers, but the Democrats are hoping to change that. Here are some key numbers:
House of Representatives
Senate
We've got more on the battle for the House and the Senate here - including key states and how many of those seats the Democrats would need to win to take control.
Gary O'Donoghue
Chief North America correspondent
Image source, Getty ImagesA student wears an "I Voted Early" sticker outside of a polling location at the University of Texas
Texas has never seen an election like this.
Its Senate race is set to be the most expensive non-presidential contest in US history, with more than $560m spent, according to tracker AdImpact.
The world's most powerful man, Donald Trump, and its richest, Elon Musk, are both heavily invested.
The president backed the state's attorney general, Ken Paxton, over sitting Republican senator John Cornyn, despite Paxton's impeachment and acquittal on corruption charges.
Elon Musk's groups have spent more than $200m supporting Paxton.
Democrats have tried for a breakthrough here for years but haven't won statewide in more than thirty years. Yet polls show their candidate, James Talarico, neck-and-neck with Paxton - and the race for Governor is also tight.
Voters are also turning out - more than 7.7 million have already cast ballots, well over 50% up on the same point in 2022.
Tuesday will tell us whether that breakthrough has finally arrived, or whether Texas remains ruby red.
Helena Humphrey
North America correspondent, in Maine
Logging is big business here in Maine and one that’s got more expensive with President Trump‘s tariffs and soaring diesel costs.
Mike LeBrun is a general manager of Pleasant River Lumber sawmill. He tells me tariffs have brought some lumber industry back to the US.
But, he notes "it’s difficult to see how a young man would want to go into the woods to make a living these days”.
That's because, he says, the industry as a whole is seeing tighter profit margins.
That hasn't, however, meant loggers are automatically flocking to Democrat senate candidate Troy Jackson, himself a fifth-generation logger.
“We don’t make much of his logging credentials,” LeBrun says.
Republican incumbent, Senator Susan Collins, has held her seat since 1997.
She has a reputation for bringing federal funds back to the Pine Street tree state. Still, the race is close and LeBrun says many Mainers feel she’s “like McDonald’s - not the best but not the worst”.
There’s a lot to play for here. If Democrats want to take control of the Senate, they’re likely to need victory in this seat.
Nada Tawfik
North America correspondent, in Detroit
Republicans believe the swing state of Michigan is their best chance to pick up a Democratic seat.
But progressives are betting on the opposite – that Abdul El Sayed will show that left-wing candidates can build a winning coalition in swing states.
If El-Sayed does win here, it would be a big moment for their movement as the party debates its future ahead of presidential elections in 2028.
Joshua Grant and his brother Jeremiah have been canvassing in southwest Detroit to get people to the polls.
They told us for too long Democrats have been more interested in preserving the status quo than fighting for people over corporations.
"They need to get out of our way, you're either for the people or you're in the way," Joshua says.
But progressives are betting on the opposite – that Abdul El Sayed will show that left-wing candidates can build a winning coalition in swing states.
The Trump administration has asked the Supreme Court to temporarily block California from counting mail-in ballots from more than 20,000 voters who federal officials allege are non-US citizens.
It comes a day before the much-awaited midterm elections.
Last month, the justice department demanded Californian authorities to set aside the ballots of the 20,000 voters, who they "believe" are "likely" non-citizens.
A week later, armed officials from the Department of Homeland Security delivered letters to county officials and employees across California threatening criminal charges if they didn't put those ballots aside.
But over the weekend, a federal judge ordered the government to stop threatening local and state election officials with criminal charges for their role in processing ballots.
Madeline Halpert
US reporter
Democrat Haley Stevens shocked many on Sunday when she announced that she would endorse Republican Mike Rogers in the Michigan Senate race against Democrat Abdul El-Sayed, whom Stevens lost to in the primary.
But Michigan political experts told the BBC that Stevens' last-minute endorsement is unlikely to move the race in either direction, though Democrats are pointing to the $2.4m (£1.79) El-Sayed's campaign said it raised in the hours since the surprising move.
Stevens' decision to endorse Rogers is "not a helpful story for El-Sayed to end the campaign talking about Democratic dissent", said Matt Grossman, the director of the Institute for Public Policy and Social Research at Michigan State University.
"But the endorsement arose out of a well-worn set of mostly personal grievances that aren't likely to move many voters," he told the BBC.
Political strategist Adrian Hemond noted that more than two million people have already voted early in Michigan.
"Stevens could perhaps have had an impact with an endorsement like this a month ago. Now it is far too late to matter," he said.
Jonathan Hanson, a public policy lecturer at the University of Michigan, said it remains a question whether the news could affect turnout or a small number of undecided voters.
Image source, ReutersWe've just heard from Abdul El-Sayed, the Democratic candidate for the Senate seat in Michigan – where a fellow Democrat shocked the party by endorsing his Republican rival Mike Rogers.
El-Sayed quips that he was "never supposed to run for public office" as he gives a speech at a rally alongside Democratic Senator Elizabeth Warren.
He wanted to be a doctor, he says, after learning about inequalities in life expectancy but while studying realised that "the healthcare system I was studying to work in was too often more interested in billing than healing".
El-Sayed says if he wins the race, he would be the first Democratic doctor elected to the US Senate since 1969.
Taking a jab at US health secretary Robert F Kennedy Jr, El-Sayed says: "I've never seen anyone use more big words wrongly in my life."
He says US President Donald Trump and the Republican campaign for Mike Rogers has nothing to say about keeping costs down, and their whole campaign is "about my name and my faith".
Image source, ReutersEl-Sayed was joined on stage by Senator Elizabeth Warren
Jack Grey
Live reporter
Image source, Getty ImagesDemocrat representative Haley Stevens has endorsed Republican Mike Rogers for the Senate
It is the final day of campaigning in the United States before voters - who haven't already voted early - will head to the polls to elect members of the House of Representatives, as well as some senators and governors in the midterm elections.
What's at stake
The battleground states
Democrat endorses Republican
Image source, Getty ImagesTexas Democratic Party chair Kendall Scudder has described Haley Stevens as a "sore loser", following her actions this weekend.
In an interview with BBC Newshour, Scudder says her support for Republican Mike Rogers shows "this was some long game she was playing".
"Good riddance she can do whatever she wants to do, we're going to win this race without her and frankly the voters of Michigan have already made very clear that they don't want her anywhere near the Capitol, so she won't be there regardless."
Her decision also shows "an ego", he says, as other Democrats across the US "are united against Trump's regime but also against a billionaire class that has run amok on our government."
Tom Bateman
Reporting from Ohio
"People are dying, people are starving," one woman in Ohio told the BBC
The line of people waiting to vote here in Columbus, Ohio, was snaking round the block when we showed up just before the state’s early voting deadline hit last night.
I walked the queue, chatting to voters in this heavily Democratic neighbourhood. This is Franklin County, which has large African American and Latino communities.
The surge in early voting and the energy in the line could portend badly for Republicans in Ohio where Trump’s party is defending a US Senate seat and the governor's mansion. Polls suggest Democrats could break that monopoly.
In the line, the impact of the rising cost of gas (petrol) and groceries came up again and again. "People are dying, people are starving," one woman told me.
"You don’t know whether to buy gas or get a piece of baloney, a slice of bread! I don’t want nobody going to war because every time you going to war, that means you’re taking the money from us," she said.
Samira Hussain
Reporting from Dubuque, Iowa
"I wanted to feel his energy in person," says Julie McGuire, a retired nurse who was present for President Trump's two-hour pre-midterm speech in downtown Dubuque, Iowa, on Sunday evening.
"He's wonderful and he's funny and he's charismatic, and he's the GOAT," Julie tells me.
People were selling Maga paraphernalia: hats, banners and American flags as Trump promised big wins on Tuesday.
Trump carried Iowa in 2024 by 13 percentage points – but Democrats are hoping to flip the state.
Brady Shoemaker says the Republican party holds Christian values, unlike the Democrats
Exiting the rally wearing a black Trump hat, Craig Winsberg says that increasing wages is the "only way we can approve affordability".
He has voted Republican since Ronald Reagan, and accepts the biggest problem for the party is the price of diesel, but says he believes "a lot of it has to do with the war in Ukraine".
A key issue for many voters this time around is the cost of living, but not for 18-year-old Brady Shoemaker, who said he attended the rally because he has "strong Christian values".
"The Republican party holds those values and the Democratic party does not," he adds.
Vice-President JD Vance is holding a rally for Republican Anthony Constantino.
Constantino is the Republican candidate in the northern New York district that stretches from Albany to the Canada border.
Donald Trump won the district by more than 20 points, but Republicans are fighting to hold onto the seat.
Vance was seen boarding Air Force Two ahead of the event.
Image source, ReutersNada Tawfik
North America correspondent, in Detroit
Jacob Cook and Cheryl are both unhappy with the Iran war
At an American football watch party in the swing state of Michigan, we met Cheryl Deplanche and her grandson Jacob Cook.
These independent voters have sided with different candidates, despite both being unhappy with the war in Iran and the last two years under President Donald Trump.
And a big reason is over healthcare.
Jacob says he's all for universal healthcare or Medicare for All, which Democrat Abdul El-Sayed has made a key part of his platform.
Jacob tells us if a person works full time, they shouldn't be crippled by medical costs.
But Cheryl says she still wants Republicans in power because she wants less government involvement – though she understands why younger Americans are deeply concerned.
Carl Nasman
North America correspondent, in Atlanta
Technically, Tuesday is Election Day – but in Georgia, and many states nationwide, voters have already cast their ballots.
A record-setting 2.8 million people voted early in the Peach State – a new midterm record. That's a third of all registered voters state-wide.
It's being seen as a sign of enthusiasm, especially in traditionally Democratic counties, where there has been a strong surge in voting.
But turnout on 3 November is still crucial, especially for Georgia’s extremely close governor’s race between Democrat Keisha Lance Bottoms and Republican Rick Jackson.
Tom Bateman
US State Department correspondent, in Ohio
Here in the state of Ohio the issue of immigration enforcement has been a big theme for President Trump on his multiple rally visits, as he's tried to stem a Democratic surge in this unlikely battleground.
He was namedropping the town of Springfield (about which he once falsely claimed Haitian migrants were eating people’s pets) to hail his mass deportation drive.
I spent time there last month and heard how Immigration and Customs Enforcement (ICE) agents had been fitting GPS ankle monitors on Haitians and sending others for deportation.
Concern about immigration helped propel Trump to the White House in 2024. But it has turned into an unintended paradox for him now.
While Republicans heavily back his “border security” policy - preventing unauthorised crossings into the US - the aggressive nature of the deportation drive has created clear discomfort among some.
Democrats, meanwhile, express outright anger over it.
Polling suggests he has overreached on the issue, a sense you get here in Ohio where a loss for Trump’s party might come because too many of his supporters just decided to stay at home.
Bernd Debusmann Jr
White House reporter, in Washington DC
A day before Americans cast their ballots across the country, a number of key Senate battles remain close - but with the Democrats showing a last-minute swell of support in key battleground states.
Of the seven contested states that will ultimately decide which party controls the chamber, polls show Democrats with a lead in five: Kansas, Maine, Ohio, Texas and Alaska.
In Iowa, several polls show Democrat Joshua Turek essentially tied with Republican Ashley Hinson.
Experts have repeatedly cautioned that polls have been wrong in the past, but wins in several of these states would mark notable wins for the Democrats.
Texas, for example, has not sent a Democrat to serve in the Senate since 1988, and Kansas has not had a Democratic Senator since 1932.
To win control of the Senate, Democrats need to hold their existing seats and "flip" at least four currently held by Republicans.
While polls show Abdul El-Sayed with a lead in Michigan, most of them were conducted before Haley Stevens surprised many by endorsing Mike Rogers, setting off a feud inside the party.
Sakshi Venkatraman
US reporter
Image source, Getty ImagesPresident Trump at a campaign rally in South Carolina
The midterm elections don’t choose the US president, and therefore Donald Trump is not on the ballot tomorrow.
But he’s been hitting the campaign trail to encourage Republicans to vote as if he is.
"Please pretend I'm on the ballot, because in a way I am on the ballot," he said at a recent event.
Keeping Republican lawmakers in control of Congress allows Trump to pass the laws he wants. But midterm elections tend to punish the party that has control of the White House.
Trump has been making stops in several US states including Texas, South Carolina, Mississippi, Alabama and Oklahoma to rally his supporters to vote for Republicans on the ballot.
Addressing crowds in the traditionally Republican strongholds of Iowa and Kansas on Sunday, Trump sought to shift the focus away from voter frustration over rising prices.
As Americans prepare to head to the polls for crucial midterm elections that will determine control of Congress, surveys suggest the issue of rising prices is central to how some people will decide their vote.
Clive Myrie has visited North Carolina where he spoke to voters about the issues ahead of the elections on Tuesday.
You can watch below:
Nada Tawfik
North America correspondent, in Detroit
Image source, ReutersDemocratic Congresswoman Haley Stevens' endorsement of Republican Senate nominee Mike Rogers already appears to have backfired.
It's forced the fractured Democratic Party to rally more strongly around Abdul El-Sayed.
Yesterday, at his rally in Southfield, Michigan his supporters were more fired up than ever.
One man predicted that any Democrat who was serious about winning the midterms would clearly disregard her "act of betrayal" and work even harder to get him elected.
Two other women said this would only hurt Stevens.
The campaign has announced that it raised more than $2.4m (£1,7m) yesterday, its biggest fundraising day yet. Coincidence? I think not.