Sir Keir Starmer is reportedly weighing up his political future as pressure intensifies for him to announce his resignation as leader. The calls for his departure have grown following a significant by-election victory for Andy Burnham, which some interpret as clearing a path for a potential leadership challenge.

This situation comes after a period of internal party discussions and external commentary on Starmer's leadership. The Makerfield by-election result has emboldened those within the Labour party who believe a change in leadership is necessary for the party's electoral prospects.

Cabinet ally Peter Kyle, the business secretary, indicated that Starmer is "taking the time to think through what the political realities are today." Kyle stated that Starmer spoke with him on Friday and that any decisions about Labour's future would be made in the "best interests of the country." He acknowledged the challenges to Starmer's leadership, suggesting that while a formal process for changing leaders is preferable, it must be balanced with maintaining the government's authority.

The implications of Starmer's potential departure are significant, potentially triggering a leadership contest. Such a contest could further divide the party and create uncertainty for markets and government operations, especially if it mirrors the six-week duration of the 2020 leadership race that brought Starmer to power.

Further complicating matters, U.S. President Donald Trump publicly stated that Sir Keir will resign, criticizing his record on immigration and energy policy. Trump reiterated his calls for opening North Sea oil reserves. While No 10 confirmed that Starmer and Trump had not spoken over the weekend, the U.S. President's comments add an international dimension to the domestic political pressure.

In the immediate aftermath of Burnham's victory, Starmer had insisted he would contest any formal leadership bid. However, Kyle's comments suggest a potential shift in tone, acknowledging the "forces at work that were challenging Sir Keir as party leader." This indicates a growing recognition within Starmer's camp of the political realities he faces.

Some Labour MPs have expressed concerns that a prolonged leadership contest could further damage the party's prospects, potentially delaying key government work and creating "unnecessary uncertainty for the markets." The precedent set by the 2020 leadership race, which lasted six weeks, highlights the potential for extended internal debate.

As the political landscape evolves, the focus remains on Sir Keir Starmer's next move. The coming days are expected to be crucial in determining whether he will step down, setting the stage for a potential leadership contest and further shaping the future direction of the Labour party.