Wes Streeting has launched a formal leadership challenge against Keir Starmer following a series of poor election results for the Labour Party.The Health Secretary secured the necessary support from 81 lawmakers to trigger a contest after holding a meeting at Downing Street.Angela Rayner has also emerged as a possible contender for the top position after clearing her tax records with HMRC this week.Keir Starmer has publicly warned that a leadership struggle will paralyze government operations during this period of economic uncertainty.