Keir Starmer, the leader of the Labour Party in the UK, is under pressure from his party members to change his leadership strategy after suffering a substantial byelection defeat in Gorton and Denton, where the Greens overturned a 13,000 majority from the previous general election. This defeat, marking the Labour Party's loss of a constituency that had been under its control for nearly a century, not only led to the election of Hannah Spencer, a local Green councillor, but also highlighted the party's struggle to retain support from its traditional voter base. Starmer's leadership is particularly at risk as the Greens, led by Zack Polanski, have gained traction and appeal among disillusioned Labour voters, exacerbating existing concerns within the party about losing ground to the left.