Jeremy Corbyn is plotting a "big upset" to topple Sir Keir Starmer in the Prime Minister's own seat of Holborn & St Pancras, allies of the ex-Leader of the Opposition have told GB News.
Starmer, who retained his seat of Holborn & St Pancras, with a reduced majority of just 11,572 last year, is now being warned to brace for a knife-edge campaign to retain his once-safe seat
Your Party, which is co-led by ex-Labour MP Zarah Sultana, has already amassed more than 600,000 sign-ups just days after launching, giving Corbyn a springboard to launch an aggressive ground campaign in the Prime Minister's backyard.
Opinion polls suggest that Your Party could receive 10 to 15 per cent support from a standing start, with 31 per cent of 2024 Labour voters open to switching their allegiance back to Corbyn.
Such a scenario puts Holborn & St Pancras in play for Your Party, leaving Starmer at risk of becoming the first Prime Minister to lose his own seat while residing in No10.
And Corbyn's allies now believe Your Party will assemble itself to pose a major threat to Starmer in Holborn & St Pancras.
A source close to Corbyn told GB News: "At the last election, Starmer lost almost 20,000 votes amid a strong challenge by independent progressive Andrew Feinstein, who came second with 19 per cent of the vote.
"Next time around, with a longer campaign, more resourcing and Starmer's colossal unpopularity, a big upset is more than possible."
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Sir Keir Starmer addressed the nation about recognising Palestine yesterday | PA"There is a huge appetite for real change and genuinely progressive politics in Holborn & St Pancras but decisions on target areas and wider strategy will be made following the party’s founding conference," another Corbyn ally added.
"Your Party can win everywhere and isn’t focused on big names, just big change."
Meanwhile, Merlin Strategy founder Scarlett Maguire also warned the Prime Minister that a single challenger candidate on the left could prove fatal.
She told the People's Channel: "Your Party could win Holborn & St Pancras, which, if Keir Starmer is still leader, is obviously huge.
Jeremy Corbyn MP addresses the rally on June 15, 2024
|GETTY
"At the moment, it's underpriced that if both Keir Starmer and Kemi Badenoch are in place, they both lose their seats."
Speaking specifically about the contest in Holborn & St Pancras in the 2024 General Election, Maguire added: "They didn't come close to winning last summer, but they halved Starmer's majority.
"And I would be, if I was them, thinking about putting lots of effort into that because it's a high-profile seat."
While the polling guru pointed out that Corbyn can count on a loyal group of supporters, Maguire stressed that the Prime Minister has "no core base".
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| PAA number of Starmer's Cabinet colleagues could also face the chop, with Deputy Prime Minister Angela Rayner facing a huge threat from Reform UK in Ashton-under-Lyne.
The 2024 General Election saw independent Andrew Feinstein and Green candidate David Stansell eat into Starmer's support, cutting the Prime Minister's overall votes from 36,641 as Corbyn's Shadow Brexit Secretary in 2019 to just 18,884.
Meanwhile, Corbyn overcame the challenge of contesting his Islington North seat as an independent, with a well-organised ground campaign seeing off the challenge from Labour's Praful Nargund by 7,247 votes.
The ex-Leader of the Opposition, who was blocked from returning for Labour after dismissing the Equality & Human Rights Commission's probe into antisemitism, is widely expected to now win his seat by an even more comfortable margin, opening the door to Your Party picking off more seats in predominantly urban, university-educated areas.
Sir Keir Starmer during a campaign rally ahead of the 2024 General Election | GETTYSultana is even tipped to make a chicken run from Coventry South to Birmingham Ladywood in a bid to defeat Justice Secretary Shabana Mahmood.
Zach Polanski, who is currently launching a leadership challenge for the Green Party, could also aide Corbyn's efforts after the London Assembly Member opened the door to some form of electoral agreement with Your Party.
However, a Labour veteran dismissed Your Party's chances of toppling the Prime Minister in Holborn & St Pancras.
"This is largely pointless, Keir won't lose," the Labour veteran told GB News.
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| PAMuch of the fury directed towards Labour stems from the Prime Minister's stance on Gaza, with Corbyn yesterday accusing Starmer of using Palestinian statehood as a "bargaining chip".
However, other issues have also pushed voters on the left away from Labour, including the recent welfare reforms.
GB News has already revealed that trade unions could consider abandoning Labour to back Your Party in a major blow to Starmer's re-election chances.
Ex-Unite boss Len McCluskey said: "If this new party demonstrates it is credible, then trade unions will consider their affiliations."
Scarlett Maguire is the founder of Merlin Strategy | GB NEWSHowever, defeat for Starmer in Holborn & St Pancras remains a potentially seismic outcome given no sitting Prime Minister has failed to hold onto their own seat in a General Election.
Maguire said: "We had it as a possibility with Boris and there was talk about it with Rishi in Richmond, but it wasn’t a natural target for Reform and he ended up being reasonably safe there."
Just two Prime Ministers have come close to losing their seats, with Tory Arthur Balfour being ousted just months after leaving No10 and Labour's Ramsay MacDonald being defeated shortly after resigning as the head of the National Government in the 1930s.
Liz Truss joined the unfortunate club just last year after failing to retain South West Norfolk in the 2024 General Election.