A bombshell mega-poll has projected that Nigel Farage would earn the largest Commons majority in modern political history if a General Election was held tomorrow.

Reform UK is on course to win 445 seats, Labour would be down to 73 MPs and the Tories would have just seven seats.

However, tactical voting could block the Reform leader’s path to victory as more than a third of Labour voters have said they would back the Tories to stop Mr Farage’s party.

The seat-by-seat MRP poll was carried out by communications firm PLMR, Electoral Calculus and the Daily Mail.

MRP – multilevel regression and post-stratification – is considered a more accurate way to predict how many seats each party will win during a General Election.

The Liberal Democrats have been forecast to win 42 seats while the SNP has 41 and Jeremy Corbyn’s Your Party has 13.

However, the Tories trailed behind with just seven MPs, just ahead of the Greens on six and Plaid Cymru on five.

The poll was conducted between September 10 to 18 and saw 7,449 British adults involved ahead of the party conference season.

It will be tough reading for many senior politicians as Reform would snatch seats from a number of long-standing Labour and Conservative figures.

Chancellor Rachel Reeves, Foreign Secretary Yvette Cooper, Education Secretary Bridget Phillipson and Energy Secretary Ed Miliband could be set to lose their place to Reform.

However, Shabana Mahmood and Wes Streeting could see their seats land in the hands of Your Party, polling has shown.

Tory leader Kemi Badenoch could see her seat stolen by Reform as well as Robert Jenrick, Suella Braverman, Rishi Sunak and Iain Duncan Smith.

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Britain is unlikely to go to the polls for another three years.

The polling indicates the economy and cost of living is a top priority for voters.

About 59 per cent of voters said it was the most critical issue, whereas 47 per cent thought immigration and border control was their top priority for the Government to prioritise by the November Budget.

The NHS took 44 per cent which was well ahead of crime, justice and policing on 22 per cent.

PLMR Chief Executive Kevin Craig told the Daily Mail that the poll showed a “remarkable fall from grace for the Conservative Party”.

He added it exposed what voters’ priorities were.

“The electorate is demanding action on the economy first and foremost, with concerns around immigration and the NHS still present,” Mr Craig said.

“Traditional party loyalties are under unprecedented pressure.”

Mr Craig said there was still a long way to go until the next election, likely in 2029, but the message “is clear: voters want their weekly shop to cost less”.

“It’s time to forget the slogan and the clever language. Instead, the Government must keep calm and focus on delivering more money into working people’s pockets to shore up support ahead of the next election,” he added.

Electoral Calculus Founder Martin Baxter said the poll underscored “just how volatile the political landscape” had become.

“There are two big changes at the moment, but they point in different directions. Anti-Reform tactical voting means Reform’s poll lead isn’t as good as it looks, as the party could lose dozens of seats because many voters will vote for any candidate without a light-blue rosette,” he said.