It has been a week since Scottish Labour leader Anas Sarwar piled pressure on Sir Keir Starmer by calling for him to step down.
It’s was the latest bad news story for the Prime Minister a mere 18 months after a spectacular election landslide triumph.
The intervening period has seen a succession of bad news stories for the Premier, along with cabinet scandals and embarrassing u-turns - including on an income tax rise at the last budget.
And the worst was yet to come - courtesy of the scandal linking former British Ambassador to the United States Lord Mandelson to financier sex offender Jeffrey Epstein.
Following Sarwar’s intervention, the Prime Minister appears to have shored up support, with his cabinet offering unanimous support.
But with the crucial Gorton and Denton byelection on Thursday, February 26, followed by the Scottish Holyrood Election and English local elections in May, a series of poor performances at the polls by Labour could see that support vanish.
There is now growing speculation over who will succeed him when he eventually stands aside - or is forcibly removed from office.
Here are the 12 most likely candidates - according to the bookies.
Make sure you don't miss a moment of breaking news from across Scotland by signing up to our free newsletter here.
5. Shabana Mahmood - 10/1
Current Home Secretary Shabana Mahmood has impressed since taking on her role last September. She's 10/1 to become Labour Leader. | AFP via Getty Images
6. Alistair Carns -12/1
Aberdeen-born politician Alistair Carns has only been an MP since 2024, having previously been an officer in the Royal Marines. He's priced at 12/1 for the job of Labour leader. | Getty Images
7. Andy Burnham - 16/1
Mayor of Greater Manchester Andy Burnham is a hugely popular figure with both Labour MPs and voters. He's another potential candidate who has refused to rule out standing in any leadership challenge. The one (fairly large) problem is that he's not an MP so would need to contest and win a byelection first - something that he was recently blocked from doing by the party's NEC. That's perhaps the only reason why his odds on becoming next Labour leader are as long as 16/1. | AFP via Getty Images
8. David Lammy - 16/1
Also priced at 16/1 for Labour's top job is current Deputy Prime Minister, Secretary of State for Justice and Lord Chancellor David Lammy. He's been the MP for Tottenham for 26 years, having first been elected in 2000. | Getty Images