Millions of Americans will head to the polls on Tuesday in what is shaping up to be one of the most decisive midterm elections in US history.

Voters will choose in a collective battle for power that might turn America upside down and determine the future of Donald Trump's presidency.

Throughout the first two years of Trump's second administration, Republicans have controlled the White House, the Senate and the House of Representatives.

But polling ahead of the 2026 midterms has repeatedly indicated a 'blue wave' Democratic victory as Senate, House and governor seats are up for grabs – even in historically deep-red states that turned into political battlegrounds.

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2026 election guide when polls close and when we'll find out results

Click here for everything you need to know about when the polls close, the top races to watch nationwide, and when we can expect overall results.

Several states look set to elect the first female governor in their history on Tuesday.

In Minnesota, Sen. Amy Klobuchar holds a double-digit lead over Republican state House Speaker Lisa Demuth.

In Tennessee, voters are also choosing between two female candidates, with Sen. Marsha Blackburn holding a strong lead over Democrat Jerri Green.

Georgia voters may also elect their first black female governor, as Democrat Keisha Lance Bottoms faces off against billionaire healthcare CEO Rick Jackson.

Ohio Democrat Amy Acton holds a lead over Republican Vivek Ramaswamy, with the state also looking to elect its first woman as governor.

Voting machines across Westchester County in New York have experienced widespread failures early on election day, officials say.

Officials said ballot scanners began experiencing problems as soon as the polls opened at 6am on Tuesday.

The county is a crucial swing district in New York, with Republican Rep. Mike Lawler fighting to retain his seat in Congress in the deep-blue state.

The state is also watching a gubernatorial matchup between Democrat Kathy Hochul and GOP challenger Bruce Blakeman.

Over one million people live in Westchester County, representing a huge voting bloc in the state.

Voters are being told to remain in line and fill out paper ballots to be held in secure boxes while the machine issue is fixed.

'We can't do that anymore,' Bret told the Daily Mail.

Because Bret, a 64-year-old Christian pastor of Moroccan descent, is voting for Republican Mike Rogers.

'I am biblically, morally, conservative,' he said. 'I believe that this nation was founded on Christianity and so I will probably lean away from Islamic candidates.'

And his brother, a Muslim, is voting for Democrat Abdul El-Sayed. If successful, El-Sayed will become the nation's first Muslim senator.

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On Tuesday morning, 19 Florida polling locations were abruptly moved due to dangerous flooding just 45 minutes before they were set to open.

The changes were announced by the Florida secretary of state's office, which said the locations were moved 'to ensure that residents in those areas in affected counties still have the ability to vote.'

The list of changed polling locations can be found here: https://dos.fl.gov/elections/for-voters/emergency-and-disaster-election-resources/

It comes as early voting was disrupted in the Southwest in recent days due to deadly flooding, with heavy rainfall set to continue through Central US and the Midwest on election day.

Democratic congresswoman Haley Stevens has launched a blistering attack on her own party in a nearly 900-word statement after her extraordinary decision to endorse a Republican for the Senate.

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Stevens urges 'healing' while slamming Democrats, denies fiance's role

Haley Stevens has called for 'healing' in a nearly 900-word statement attacking fellow Democrats after endorsing Republican Mike Rogers. She accused her party of punishing dissent.

The Michigan lawmaker defended her stunning U-turn in a lengthy post on X on Monday night, accusing fellow Democrats of intolerance, criticizing their candidate Abdul El-Sayed and furiously denying claims her fiancé had influenced her decision.

Stevens, who lost the Democratic Senate primary to El-Sayed in August, insisted she remained a proud Democrat despite throwing her support behind Republican Mike Rogers just two days before the midterm elections.

'My decision to withdraw my endorsement of Abdul El-Sayed and support Mike Rogers has angered many Democrats. I understand why,' she began.

'But it was not impulsive, and it was not made for me by anyone else. It was a decision of conscience.'

Stevens faced backlash from senior Democrats for her decision to knife her own party's candidate on the eve of the election, with Senate Minority Leader Chuck Schumer calling her endorsement a 'despicable betrayal'.

President Donald Trump has spent months campaigning for Republicans, and despite his best efforts, most voters believe he's hurting his own party's chances, according to the final Daily Mail/Ipsos poll.

Among registered voters, 55 percent said Trump is hurting Republicans' chances in the 2026 midterm elections. Fewer than half of Republicans, 48 percent, say Trump is helping. And 60 percent of independents believe he's hurting.

Just one in five, 20 percent, say the president's efforts are helping.

Among Republicans, 21 percent believe the president is a drag on their party's campaign efforts.

The president has traveled to over two dozen states and held at least two dozen events since launching a midterm blitz in September.

While he is absent from any ballot, he's asked voters to head to the polls with the same enthusiasm as though he too is up for re-election.

But perhaps because of his pleas, or despite them, voters are bracing for a rough night for Republicans.

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Americans deliver brutal final verdict on Trump Election Day morning

Four in ten US adults expect Democrats to sweep to victory in Tuesday's midterm elections, according to the Daily Mail's final poll before the results are called.

President Trump has issued a string of endorsements for Republican candidates across the nation as voters head to the polls.

Trump took to his Truth Social platform on Tuesday morning to announce dozens of endorsements.

The president's endorsements ranged from state legislatures to Congressional seats, as he hoped to give a final boost to GOP candidates ahead of a potentially gruelling day.

Polls show Republicans are expected to struggle in state legislatures and lose a number of seats in the House and Senate, as Trump faces the prospect of losing control of congress.

Election monitors are to be deployed to scores of counties across the US today as voters head to the polls.

The Justice Department shared a list on Tuesday morning of more than 126 counties across the country that will see federal election monitors.

The DOJ said around 1,000 election monitors were being sent to all 50 states, and described the effort as the nation's 'largest monitoring effort in history.'

The full list of counties can be found here - https://www.justice.gov/opa/pr/doj-monitor-elections-all-50-states-first-time

Republican nominee for governor in Georgia, Rick Jackson, has warned his party that he is already in a deep deficit after early voting.

Jackson, 72, a billionaire healthcare CEO, told reporters on Monday that Republican voters needed to turn out in huge numbers on election day if he is going to avoid a humiliating loss.

'We have a serious issue here,' he said, per Politico.

'People can't solve a problem they're unaware of. And I think we waited a little bit too late to say: ‘Guys, we have a problem. We can lose this race, and you cannot take it for granted,'' Jackson said.

Georgia voters cast over 2.8 million early ballots, which set a new midterms record in the state.

Jackson is facing former mayor of Atlanta, Keisha Lance Bottoms, in the state's gubernatorial election, where the Democrat hopes to become the first black female governor in US history.