Health Secretary Wes Streeting is preparing to challenge Prime Minister Keir Starmer for the Labour Party leadership following disastrous local election results.Streeting needs 81 MP nominations to force a contest as internal dissent grows with dozens of lawmakers calling for Starmer to resign.Despite Starmer vowing to maintain his position and dismissing the threats, potential successors including Angela Rayner and Andy Burnham remain in the background.Internal tensions have deepened amid concerns regarding policy effectiveness and controversial associations within the broader party hierarchy.