Recent developments in UK politics have intensified speculation over Labour leadership amid Keir Starmer’s weakening position following heavy losses in local elections and multiple cabinet resignations. Andy Burnham’s approval to contest the Makerfield by-election has positioned him as the leading candidate to return to Parliament and mount a challenge, driving trader consensus toward his elevated probability as the next prime minister. This reflects his strong polling among party members and broad appeal across regions, while Wes Streeting’s resignation and Angela Rayner’s cleared tax matters keep them as secondary contenders. The market’s pricing incorporates uncertainty around the by-election outcome and any formal contest timeline before the next general election, with no major shifts reported in the prior week.