Sir Keir Starmer has vowed to lead Labour “into a new era with confidence and hope” after decisively winning the contest to succeed Jeremy Corbyn. The 57-year old defeated Lisa Nandy and Rebecca Long-Bailey in a ballot of party members and other supporters. The lawyer, who became an MP in 2015, won on the first round of voting, with more than 50% of ballots cast. […] In a video message released by the Labour Party, Sir Keir promised to work constructively in opposition and said he hoped Labour “when the time comes can serve our country again — in government”....