Burnham by-election win pressures Starmer

British media unanimously report that Prime Minister Keir Starmer is facing imminent resignation following a parliamentary by-election victory by his main internal party rival, Andy Burnham. The Daily Mail writes of resignation 'in the coming days or a coup,' while The Times reports Starmer is considering stepping down as Labour leader. The Guardian, a Labour-aligned newspaper, declares on its front page that 'after Burnham's victory, Starmer's departure is inevitable.' Starmer is expected to make a final decision this weekend, though he continues to publicly state he does not intend to resign. Pressures have mounted as Burnham, the former mayor of Manchester, consolidates internal party support, fueling speculation about a leadership challenge.