Labour MP Stephen Streeting said Prime Minister Keir Starmer should publish a timetable for his departure if Andy Burnham wins the Makerfield by-election [1].

The request signals a potential internal power struggle within the Labour Party. A victory for Burnham in the Makerfield constituency would position him to launch a formal leadership challenge against Starmer [1, 2].

Streeting said the comments on June 16, 2026 [2], the same day as the by-election. He said the party requires clarity on a succession plan to maintain stability if a viable challenger emerges from the vote [1, 2].

Burnham secured a victory in the contest with a majority of more than 9,000 votes over Reform candidate Robert Kenyon [3]. This margin reinforces Burnham's standing within the party and increases the pressure on the current leadership to address the future of the premiership [3].

While the Prime Minister has not yet responded to the call for a departure timetable, the result in Makerfield creates a specific political catalyst for internal debate. Streeting's public push for a timeline suggests that some members of the party believe a transition is necessary for the party's long-term health [1].

The by-election occurred amidst a broader political climate where Reform UK continues to challenge traditional party strongholds, though Burnham's significant lead suggests the Labour core remains intact in this specific region [3].

Streeting said Keir Starmer should publish a timetable for his departure if Andy Burnham wins.

The demand for a departure timetable indicates a growing faction within the Labour Party that views Andy Burnham as a viable alternative to Keir Starmer. By linking the leadership transition to the Makerfield result, Stephen Streeting is attempting to turn a local electoral win into a mandate for national party leadership change, potentially destabilizing Starmer's authority.