Westminster is experiencing a rapid shift in political power, with Sir Keir Starmer setting a timetable for his departure and key rival Wes Streeting endorsing former Greater Manchester Mayor Andy Burnham. These developments significantly accelerate the likelihood of Burnham becoming the next leader of the Labour Party and potentially the UK's next Prime Minister.

Burnham's potential ascension follows Starmer's announcement of his impending resignation, creating a vacancy at the top of the Labour Party. The endorsement from Streeting, who was considered a significant contender, consolidates support behind Burnham, positioning him as the frontrunner.

Chancellor Rachel Reeves's presence at Burnham's event, noted by observers, suggests a complex political landscape regarding potential cabinet appointments. While some argue for Reeves's retention at the Treasury due to her perceived market confidence, others suggest Burnham might opt for a fresh start, distancing himself from Starmer's administration. Streeting has denied being offered a role by Burnham.

The rapid nature of these changes raises immediate questions for the Labour Party and for Burnham himself. His potential premiership, beginning just weeks after becoming an MP, could be seen as unconventional, particularly given his previous unsuccessful bids for the Labour leadership.

Concerns have been voiced by some within the party regarding the optics of a leader who was not a parliamentary candidate at the last general election and only recently secured a seat in the House of Commons. This narrative is amplified by his past leadership contest defeats.

One minister highlighted Burnham's previous losses to Ed Miliband and Jeremy Corbyn, both of whom subsequently led Labour to electoral defeats in 2015, 2017, and 2019. This historical context is being used to question the strength of Burnham's leadership credentials.

Starmer's premiership has been marked by significant political events, including the ongoing debate surrounding the UK's relationship with the European Union a decade after Brexit. The new leader will face substantial decisions on key policy areas.

The coming weeks will be critical as the Labour Party navigates this leadership transition. The focus will be on how Burnham consolidates support, addresses internal concerns, and prepares to present himself as a viable candidate for Prime Minister.