Andy Burnham, the Greater Manchester mayor, is projected to win the Makerfield by‑election on June 18 with a ten‑point advantage over Reform UK’s Robert Kenyon,according to a new Survation poll.. A victory would trigger an immediate leadership contest within Labour, directly challenging Prime Minister Sir Keir Starmer, who has vowed to fight any challenger.

Survation poll gives Burnham a ten‑point lead in Makerfield

The survey of 512 likely voters,with undecideds removed, shows Burnham ahead by roughly ten points, a margin that makes the by‑election a de‑facto referendum on Starmer’s premiership. the poll’s modest sample size has nevertheless drawn intense scrutiny, as analysts note that focusing on likely voters can sharpen its relevance to the actual ballot.

Burnham says he will join any leadership race if elected

During a BBC Question Time special in Makerfield, Burnham told the audience that a win would see him enter the leadership contest already hinted at by Health Secretary Wes Streeting. “I can’t do anything unless I’m lucky enough to get the support of people here… I would seek to represent you at the highest possible level,” he said, confirming his intent for the first time .

Downing Street rejects the idea of a smooth transition

Deputy Prime Minister David Lammy told LBC there is “no contest at the moment” and warned that a leadership battle would be a “huge distraction.” A No. 10 spokesperson added that the country expects the government to focus on cost‑of‑living, NHS waiting lists, border security and child poverty, not internal Westminster debates. The statement underscores Starmer’s resolve to defend his mandate from two years ago.

Potential multi‑candidate showdown with Streeting and others

Analysts note that Burnham’s rise revives the left‑wing challenge to Starmer’s centrist agenda, while Wes Streeting’s public speculation suggests a possible three‑way race. If Burnham secures the Makerfield seat, he would possess a clear democratic mandate to contest the leadership, intensifying the battle for Labour’s soul.

Who will decide the next Labour leader?

The unanswered question remains whether the broader Labour membership will rally behind Burnham, Streeting or another figure, and how quickly a formal contest could be called . The poll provides a snapshot, but the final vote on June 18 will determine whether Makerfield becomes the catalyst for a party‑wide power shift.