Peter Bowes
Reporting from California

Polls in California are due to close at 23:00 eastern (04:00GMT).

With 52 congressional districts up for grabs, there is much to play for in California.

Overwhelmingly Democratic, the Golden State wields huge political influence over the House of Representatives.

All eyes will be on very late into the night - or late into the week - to await results from America's most populous state.

About half a dozen races were toss-ups going into polling day. They could prove crucial to the balance of power in the House.

The electoral map has been redrawn since the last election.

Shifting district boundaries have skewed the political landscape making it difficult to predict which seats could flip. But in this traditionally blue state, violent crime is rising, the economy is fragile and gas prices are the highest in the country, making the Democrats are nervous.

It's unlikely to be a tsunami, but a red - Republican - wave could be poised to crash over California.

Republican Greg Abbott is projected to hold his seat in the race for governor, according to our partners CBS.

Abbott took a firm line against Covid mandates, has set up a state agency to investigate alleged voter fraud and lately has been sending migrants to liberal northern cities in a protest against federal immigration policies.

Image source, Getty Images

Polls closed a short while ago in Nevada, where Republicans are angling for a late-night plot twist in their fight for Senate control.

Analysts have been calling Catherine Cortez Masto "the most vulnerable Democrat" in the Senate this year.

Elected in 2016 with strong backing from working class voters in the state, she is the first Latina to serve in the chamber.

But the same voters who put her there could oust her tonight in favour of Republican Adam Laxalt.

Here's more on why Cortez Masto's seat is in peril.

Illinois Democratic Senator Tammy Duckworth is projected to retain her Senate seat, according to our partners at CBS.

The former combat veteran became the first sitting senator to give birth in office back in 2018.

Illinois Governor JB Pritzker, a Democrat, will also keep his seat.

There haven't been a lot of surprises yet tonight, but there have been a few notable developments.

Here's the state of play at 22:30 eastern time (03:30GMT)

• Florida Republican Governor Ron DeSantis, who has been suggested as a rival to Trump for the White House in 2024, has successfully fended off a Democratic challenger
• Trump has spoken from his home in Mar-a-Lago, where he has taken credit for the Republican wins so far, and predicted more to come
• Earlier on Tuesday, he told a conservative network that he "should get all the credit" if Republicans win, and "should not be blamed at all" if they lose
• Polls have closed in most states at this point, but the races are too close to call in several important battlegrounds like Pennsylvania and Georgia
• The House of Representatives is leaning towards Republicans taking back control, according to the latest projections from our partners at CBS, but the Senate still hangs in the balance
• A few trailblazers have emerged - including the first lesbian governor in the US and the first Generation Z congressman

Sophie Long
Reporting from Arizona

It’s starting to feel like a party at the Down Town Phoenix hotel where Democratic candidates and their friends, family and campaign workers are gathering.

The polls have closed. That alone is cause for celebration here as a last minute legal bid by the Republicans to keep them open after problems with tabulation machines failed.

They’ll likely have to wait several days before they’ll know if they have further cause for celebration, or commiseration.

The races in Arizona are tight. Republican gubernatorial candidate, former news anchor Kari Lake, who’s been described as “Trump in heels” has repeated the former president’s baseless claims that the 2020 election was stolen throughout her campaign. She has been leading in the polls, but not by much, and asked if she would accept the result if she loses to Democrat Katie Hobbs, she said: “I will win the election and I will accept that result.”

Another Trump-endorsed Republican newcomer and election denier, Blake Masters, had been closing in on Democratic Senator Mark Kelly who is fighting for re-election to the Senate.

Now they’re counting the votes as sheriffs' deputies patrol the election centre. It could take many days before the final results are certified by the Republican-led board of supervisors overseeing this election.

Plenty of time for the inevitable claims of foul play by the Republican candidates who have already lost their first legal challenge of this election.

Vermont has voted by an overwhelming margin to protect abortion in its state constitution.

Voters in the eastern US state were asked to vote on whether or not to protect reproductive rights - including abortion - in Vermont's constitution.

Preliminary results show they have overwhelmingly voted to protect reproductive autonomy.

Vermont is one of five states with abortion on the US midterm election ballot this year.

Supporters of the constitutional amendment say it will not only protect access to abortion in the state, but will also guarantee other reproductive rights like having access to birth control.

Opponents, however, said the wording of the amendment was too vague - and some fear it would also protect late-term abortions.

Former President Donald Trump has been speaking in front of supporters at his Florida Mar-a-Lago estate.

"This has been a very exciting night," Trump said.

He said the media had been hoping for "big losses", but that was not happening. He said of the 330 endorsements he has made, 224 were projected to win.

He mentioned specific races, including Ohio, where he said JD Vance was leading, and in Georgia, where he said Herschel Walker is leading. The latest CBS election data says the Georgia Senate race is still too close to call.

Former President Donald Trump has started speaking in Mar-a-Lago, Florida. He opens by applauding the Republican winners so far tonight.

Trump is expected to announce his run for president in the coming days.

The battle for control for US Congress moves west as polls in Idaho, Montana, North Dakota and Nevada close.

Nevada is a particularly tight race, as the US's first Latina senator, Democrat Catherine Cortez Masto seeks to fend off a Republican challenge.

Image source, CBS News

In Reno, Nevada, voters waited outside for over an hour to cast their vote this morning despite a snow storm moving in.

One voter told CBS News they were queuing "because I have to".

"That is my right to my vote, anywhere, any time. No matter what you think or how you feel, you have to be able to express it and do it."

Reno is the state's second-largest city is forecasted to received between 1-3 inches of snow.

Image source, CBS News

Image source, Getty Images

Democrat Michael Bennet is projected to retain his Senate seat, according to our partners CBS.

The now-three-term senator was facing a challenge from Denver construction company owner Joe O'Dea.

Jude Sheerin
Reporting from Washington

Image source, Getty Images

With her projected win in Arkansas, former Trump White House press secretary Sarah Huckabee Sanders is set to become the first woman to hold the office in the southern state.

She follows in the footsteps of her father, Mike Huckabee, who once held the same role and ran twice for president.

Other former Arkansas governors famously include Bill Clinton, the Democrat, who used the office as a springboard to the US presidency.

Sanders’ Democratic rival, Chris Jones -a Baptist minister and nuclear engineer who would have been the first black governor of the state had he won –trailed her by double digits during the race.

Sanders had surgery in September for thyroid cancer. After the operation, her doctors declared her cancer-free.

She promised to use the state's top office to confront the “radical left” and President Biden.

During her two years as White House spokeswoman, she scaled back daily briefings after repeated clashes with journalists and was mercilessly lampooned by the late-night shows.

Image source, Getty Images

Republican Sarah Huckabee Sanders is projected to win the race for governor, according to our partners CBS News.

Our partners at CBS News are reporting that exit poll data reflects a significant gender gap in the race for Senate in Pennsylvania.

Men are said to be backing the Republican candidate, Mehmet Oz, by double digits. Inflation is the top issue motivating male voters.

Women - who say abortion is their top issue - are backing Democrat John Fetterman by roughly the same margin.

There are 35 of 100 seats up for grabs in the Senate, and so far we've only gotten projected results for a few.

Democrats have won Senate races in Vermont and New York - reliable Democratic strongholds.

The Republicans have taken Senate seats in states including Florida, Indiana and Oklahoma.

There have been no major surprises so far. Here's the states we're watching closely.

Image source, Getty Images

Georgia Congresswoman Marjorie Taylor Greene is projected to retain her seat for the Republicans in the House of Representatives.

Greene is an outspoken defender of Donald Trump, and is known for denying that Joe Biden won the 2020 election.

She has also been a staunch critic of Covid mandates, leading her to be temporarily banned by Twitter for false statements about the pandemic.

Nada Tawfik
Reporting from Miami, Florida

Just four years ago, Ron DeSantis won by less than half a percentage point.

Well, it’s an understatement to say a lot has changed since then, and the large margin of his victory tonight will further fuel talk of him as a contender for the White House in 2024.

He made gains with nearly every demographic group, including women and Latinos – a group he lost by 10 points in 2018.

When you look at the state’s most populous county, Miami-Dade, Republicans did far better in competitive seats than they had hoped.

Kevin Cooper, campaign director for the Miami Republican party, said their “resounding” victory was “incredible” and put it down to their messaging on the economy.

I asked Thomas Kennedy with the Democratic National Committee how they can win back conservative Latino voters.

He agreed the economy was the top concern, and Democrats had to focus heavily on “pocket book issues” in the future.

New York Senator Chuck Schumer, the chamber's most senior Democrat, is projected to keep his seat, as expected.

However, whether he will retain his status as Majority Leader is an open question, as Republicans could flip the Senate.