The Prime Minister faces growing pressure as Labour figures consider a leadership challenge

Sir Keir Starmer has doubled down on his determination to remain Prime Minister as growing tensions within the Labour Party push the prospect of a leadership challenge closer.

During recent public appearances and interviews, Starmer has sought to project confidence and raise the political cost for anyone considering a move against him.

Speaking during a series of interviews around the G7 summit in the French Alps, the Prime Minister addressed the political calculations surrounding Greater Manchester mayor Andy Burnham and the potential consequences of his political ambitions.

Starmer highlighted that if Burnham wins the Greater Manchester mayoralty by-election, a further contest would immediately follow because the mayor cannot also serve as a Member of Parliament.

The Prime Minister’s argument was that Burnham’s immediate focus should be on ensuring Labour retains control of the mayoralty rather than preparing a campaign to become the party’s next leader.

The comments were widely interpreted as an attempt by Starmer to buy time and discourage rivals from accelerating any attempt to replace him.

However, Burnham’s allies rejected that argument and dismissed the suggestion that delaying a leadership contest would benefit the party.

Members of Burnham’s team reportedly described the idea as “absolutely ludicrous” and argued that Labour would face a greater risk of losing future contests if concerns over Starmer’s leadership were not addressed.

Tensions between the two camps increased further after Starmer indicated he would be willing to offer Burnham a position in his Cabinet.

Burnham’s team quickly rejected the possibility, saying accepting a role within the current government would conflict with his campaign message of seeking to “change Labour”.

The disagreement has highlighted the widening divisions inside the party at a critical political moment.

Meanwhile, former health secretary Wes Streeting has publicly reflected on the possibility of a leadership contest and how quickly such a challenge could begin.

Attention is now focused on what many observers consider one of the most significant by-elections in recent political history.

The outcome is expected to have major implications for the future direction of the Labour Party and Starmer’s authority.

A victory for Burnham would likely increase speculation that he could become a leading contender for the party leadership and potentially a future Prime Minister.

However, a defeat could deepen Labour’s internal difficulties and still leave the possibility of a leadership battle in the near future.

The days following the by-election are expected to be crucial.

Political observers will closely examine Starmer’s response to the result and whether senior Cabinet members or influential Labour figures begin publicly or privately calling for him to step aside.

Another important factor will be whether more Labour MPs who have so far remained silent decide that a change of leadership is necessary.

If large numbers of senior figures or MPs turn against Starmer, his ability to continue leading the party and remaining Prime Minister could come under serious pressure.

His current strategy has relied on showing resilience and convincing critics that removing him would carry significant political risks.

However, political support can shift rapidly, particularly after major electoral tests.

If no substantial movement against Starmer emerges, attention will then turn to whether any potential challenger is willing to formally launch a campaign for the Labour leadership.

For now, the Prime Minister remains publicly defiant, but the coming weeks could prove decisive for his political future.

The growing speculation around rivals, the uncertainty surrounding key elections and the questions being asked inside Labour mean that the battle over the party’s leadership is far from over.

Whether Starmer’s strategy of resistance succeeds or whether his opponents decide the time has come for a direct challenge will become clearer as events unfold in the days ahead.