Sir Keir Starmer has pledged his full support for the Labour candidate in the upcoming Manchester Makerfield by-election, framing it as a contest against Reform. Greater Manchester Mayor Andy Burnham is widely anticipated to launch a leadership challenge against Sir Keir if he secures a return to Westminster. This potential challenge comes as Sir Keir's popularity has significantly declined following poor results in recent local elections. David Lammy, the deputy prime minister, has cautioned against internal party conflict, urging Labour colleagues to unite. Mr Lammy reiterated his full backing for Sir Keir Starmer, who is facing considerable pressure from rival figures including Mr Burnham and Wes Streeting. In full Politics latest: Starmer says he will back Burnham '100%' if he becomes Labour by-election candidate.
