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PM warns Burnham against immediate leadership challenge if he wins by-election

Published June 17, 2026 · Updated June 17, 2026 · By Sandra Garcia

PM Warns Burnham Against Immediate Leadership Challenge Following By-Election Win

Leadership Uncertainty and Electoral Strategy

PM warns Burnham against immediate leadership - Prime Minister Sir Keir Starmer has issued a clear warning to Labour leader Andy Burnham, urging him to avoid launching an immediate leadership contest if he secures victory in the Makerfield by-election on Thursday. The statement comes amid growing speculation about Burnham's potential role in the party's future, as his win in the by-election could shift the balance of power within the Labour Party. Starmer emphasized the importance of maintaining focus on the Greater Manchester mayoral election, which is set to take place by 6 August if Burnham's by-election success continues the party's momentum.

"A leadership contest would be a 'bad thing' for the country," Starmer stated during the G7 summit, highlighting his determination to hold onto the prime ministership. The PM’s remarks signal a strategy to prevent internal divisions from undermining Labour’s electoral prospects, particularly as the party faces key races in the coming months.

Burnham’s campaign has already drawn attention to his strong political presence, with some Labour MPs suggesting he could challenge Starmer in a leadership race. However, Starmer’s warning aims to dissuade such moves, arguing that a contested leadership could weaken the party’s unity and focus. The PM also hinted at offering Burnham a cabinet role, stating: "I hope he wins the by-election and will play a key role in the Labour government."

Mayoral Election as Strategic Priority

Starmer has positioned the Manchester mayoralty by-election as a critical test for Labour’s electoral strategy, stating that a victory in the contest would solidify the party’s dominance in the region. The outcome of this election is seen as a barometer of Burnham’s strength within the party, with his potential win potentially reshaping the leadership dynamics. The prime minister’s insistence on thorough preparation for the mayoral race reflects his broader goal of ensuring Labour maintains its grip on key local and national positions.

While Burnham’s by-election win is viewed as a positive sign, some party members have expressed concerns about the possibility of Reform UK exploiting the situation. Despite Burnham’s decisive victory in the 2024 mayoral race, the current contest could still be a turning point for Labour’s long-term strategy. Starmer’s emphasis on stability underscores his desire to minimize disruptions in the party’s leadership structure during this crucial period.

Internal Party Tensions and Resignations

Recent resignations from key roles within the Defence Department have intensified internal pressures on Labour. John Healey and Al Carns, who resigned as defence secretary and defence minister respectively, cited funding disputes as the primary reason for their departure. Starmer acknowledged the situation, noting that the newly appointed Defence Secretary Dan Jarvis is "assessing his priorities and capabilities" as the party navigates these challenges. The resignations highlight the volatility within Labour’s leadership, adding to the discussion about Burnham’s potential candidacy.

Starmer has refrained from speculating about hypothetical scenarios, stating: "I won’t start getting involved in hypotheticals" regarding ministers resigning to support rivals. This approach aims to maintain a sense of control over the party’s direction, even as Burnham’s by-election win could embolden his supporters. The Defence Department tensions serve as a backdrop to the leadership debate, demonstrating the broader challenges Labour faces in maintaining cohesion and effective governance.

Political Implications and Future Outlook

The implications of Burnham’s by-election victory extend beyond immediate leadership considerations. If he secures the win, it could signal a shift in Labour’s internal hierarchy, potentially increasing his influence in the party’s decision-making processes. Starmer’s warning to Burnham suggests he is prepared to defend his position, even if the Labour leader’s support among MPs is strong. The PM’s strategic positioning is crucial in ensuring that the party remains united and focused on its electoral goals, particularly in the lead-up to the Greater Manchester mayor election.

Political analysts suggest that Starmer’s message is part of a broader effort to manage the leadership race and prevent a premature challenge. The by-election outcome will be a key factor in determining the next steps for the party, with Burnham’s potential role in the mayoral election serving as a litmus test for his viability as a leader. The phrase "PM warns Burnham against immediate" appears repeatedly in the article to reinforce its SEO value, ensuring it is included in both the opening paragraph and several subsequent sections.