Labour MP Catherine West called on cabinet ministers to choose a new leader to replace Prime Minister Sir Keir Starmer on Sunday [1].

The move signals a deepening crisis within the Labour Party, as a former junior minister now openly threatens a leadership challenge to prevent electoral decline [1].

West said that cabinet ministers should "come up with somebody they can all get behind" and replace the prime minister [2]. She believes the current performance of the prime minister is inadequate and poses a risk to the party's prospects with voters [1].

While some reports indicated West urged ministers to act today [2], she clarified the timeline regarding a pending address from the prime minister. "I will listen to the prime minister's speech, but if it's not up to scratch tomorrow, then I'm afraid I will have to take action," West said [2].

This public ultimatum follows a growing wave of discontent within the party's ranks. Dozens of Labour backbenchers have publicly suggested that Starmer should quit or establish a clear timetable for his departure [3].

West's ultimatum places the cabinet in a difficult position, forcing a choice between supporting the current leader or coordinating a transition to avoid a disruptive internal battle. The threat of a formal challenge by West suggests that the threshold for party patience has reached a critical point [1].

Cabinet ministers should "come up with somebody they can all get behind" and replace the PM.

The call for a coordinated replacement of the prime minister indicates that the unrest within the Labour Party has moved beyond backbench grumbling to a more organized effort by former ministers. If the cabinet does not act or if the prime minister's upcoming speech fails to satisfy critics, the party faces a formal leadership contest that could destabilize the government's legislative agenda.