LONDON (AP) — U.K. Prime Minister Keir Starmer insisted Tuesday that he has no intention of resigning as calls grew louder within his Labour Party for him to step down and some junior members of his government quit in protest.

READ MORE: As he faces calls to step down, Starmer pledges to bring Britain closer to EU

A day before the state opening of Parliament when the government will present its legislative program for the coming year, Starmer tried to shore up support within his Cabinet.

Starmer's future has become a hot topic over the past few feverish days following historic losses for the Labour Party in local elections last week, which if repeated in a national election that has to be held by 2029, would see it overwhelmingly ejected from power.

Though no Cabinet member has quit or publicly stated the prime minister should step aside for a change in leader, there's growing speculation that the ambitious health secretary, Wes Streeting, will inform Starmer that his days are numbered when they meet on Wednesday.

Streeting has many supporters within the parliamentary party, including some of those who resigned from Starmer's government on Tuesday, which stoked speculation that Starmer could suffer the fate of Boris Johnson in 2022 when dozens of ministers quit en masse and forced his departure.

While more than 100 members of Parliament signed a letter saying it was "no time for a leadership contest," about 90 others said Starmer should stand down or at least set out a timetable for his departure.

That's not enough to trigger a leadership contest, though, as no candidate has issued a challenge to the prime minister. Under Labour party rules, a fifth of its lawmakers in the House of Commons, or 81 members, must publicly give their backing to a single candidate for a leadership election to take place.

First resignations

On Tuesday, several junior ministers, some of whom were elected for the first time in Labour's landslide election victory in July 2024, resigned and urged Starmer to do the same.

Miatta Fahnbulleh, minister of housing, communities and local government, was the first to quit, urging Starmer "to do the right thing for the country."

She was followed by Jess Phillips, the safeguarding minister and a prominent member of the Labour Party. In her resignation letter, she described Starmer as a "good man fundamentally" but unable to make bold changes.

"I know you care deeply, but deeds, not words are what matter," Phillips said. "I'm not sure we are grasping this rare opportunity with the gusto that's needed and I cannot keep waiting around for a crisis to push for faster progress."

Despite the party's dominant win driving out the Conservatives after 14 years in power, Labour's popularity has plunged and Starmer is getting much of the blame.

The reasons include a series of policy missteps, a perceived lack of vision on the prime minister's part, a struggling British economy and questions over his judgment. Starmer's choice of Peter Mandelson as U.K. ambassador to Washington despite ties to the convicted sex offender Jeffrey Epstein has continued to haunt him.

Starmer defiant

At the start of the weekly Cabinet meeting on Tuesday, Starmer said he took responsibility for the losses in last week's elections but would fight on.

Labour was squeezed from the right and the left, losing votes to both anti-immigrant Reform UK and the Green Party, as well as nationalist parties in Scotland and Wales. The result reflects the increasing fragmentation of U.K. politics, long dominated by Labour and the Conservatives.

Starmer told his Cabinet that there's a process to oust a leader and it hadn't been triggered.

"The country expects us to get on with governing," Starmer said. "The past 48 hours have been destabilizing for government and that has a real economic cost for our country and for families."

That cost was evident in financial markets on Tuesday, with the interest rate charged on British government bonds up by more than those of comparable nations. That shows investors think it's increasingly risky to hold British government debt.

Embattled PM wins support

As Cabinet members left 10 Downing Street, some voiced their support for the embattled prime minister.

Works and Pensions Secretary Pat McFadden said nobody publicly challenged Starmer at the meeting, while Business Secretary Peter Kyle said the prime minister was showing "really steadfast leadership."

Later, Starmer's deputy David Lammy warned Labour lawmakers that the only beneficiary of the party's "navel-gazing" is the populist right and the leader of Reform UK, Nigel Farage, in particular.

"He has my full support, and what I say to colleagues is, look, let's just step back," he said. "Take a breath."

Potential candidates

Health Secretary Wes Streeting, long believed to be preparing for a leadership challenge against Starmer, was among senior ministers who dodged a barrage of shouted questions from a gaggle of reporters outside.

"Wes Streeting, do you want the job, or not?" a man yelled from across the street. "Are you measuring the curtains?"

Streeting is expected to meet Starmer early on Wednesday, before King Charles III outlines the government's program, to discuss the future.

The other two names often touted as possible successors are Angela Rayner, the former deputy prime minister who had to quit last year over an unpaid tax bill. She has long set herself apart as a different kind of politician with a compelling personal story, brought up in social housing and leaving school at 16 as a teen mother.

Andy Burnham, the popular mayor of Greater Manchester, is widely perceived to be one of the strongest candidates but is not currently eligible because he's not in Parliament. To get in the race, he'll have to find a seat where he can be elected.

That may involve a close ally of Burnham's in the northwest of England vacating their seat for him to stand for election. However, he may be blocked as was the case earlier this year or could even lose, if last week's results are any guide.

Danica Kirka and Sylvia Hui in London contributed to this report.