Keir Starmer has declared that he would stand in any Labour leadership contest that may emerge following Andy Burnham’s commanding victory in the Makerfield by-election.
The prime minister faces renewed pressure after Burnham secured the seat with a majority of more than 9,000 votes overnight. The former Greater Manchester mayor is widely expected to launch a challenge for the Labour leadership once he officially takes his place in the House of Commons next week.
Speaking to reporters, Starmer dismissed suggestions that a leadership contest was imminent, warning that such a move would create instability at a critical time for the country.
“There isn’t one at the moment,” he said, adding that holding a contest would send “the country into chaos”.
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However, the Labour leader made clear that he would not step aside if a challenge materialised.
“If there is a contest, then yes I will run, I will stand, and I’ve said repeatedly I’m not going to walk away from that.”
The remarks are likely to disappoint Labour MPs who had hoped Starmer would indicate plans to leave office following Burnham’s by-election success.
Andy Burnham’s Makerfield Win Intensifies Labour Leadership Speculation
Starmer revealed that he had not yet spoken directly to Burnham following the result but said he planned to do so.
Despite the growing focus on Labour’s leadership, the prime minister welcomed what he described as a “very good victory” for the party after Burnham won 55% of the vote.
He also characterised the campaign as a contest between Labour and Reform UK, saying it represented a “real battle of Labour values against divisive Reform values”.
The by-election was triggered after former Labour MP Josh Simons stepped down last month following the party’s disappointing local election performance, creating an opportunity for Burnham to return to Westminster.
How Labour Leadership Rules Could Shape Any Future Contest
Under Labour Party rules, a challenger must secure the support of at least 81 Labour MPs — equivalent to 20% of the Parliamentary Labour Party — before a leadership election can be triggered.
Should a contest take place, the incumbent leader is automatically included on the ballot paper.
Labour members and affiliated supporters then vote by postal ballot, ranking candidates in order of preference. To win, a candidate must secure at least 50% of the vote.

Burnham’s leadership ambitions have long been the subject of discussion within Labour circles, and he is believed to have sufficient backing among MPs to mount a challenge.
Burnham Promises ‘A New Path For Britain’
Throughout the Makerfield campaign, Burnham focused heavily on his own platform, urging voters to “vote Andy” rather than “vote Labour”.
In his victory speech, he said he wanted to “lay out a new path for Britain” and argued that Labour must take action to “make life affordable” again.
Recent polling by YouGov among Labour members has suggested that Burnham would comfortably defeat Starmer in a head-to-head leadership contest.
In the aftermath of the by-election, some within the party had hoped Starmer might step down voluntarily, allowing Burnham to take over without a prolonged internal battle.
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However, the prime minister’s latest comments indicate he intends to remain in the fight should a challenge emerge.
