The Labour Party leadership of Jeremy Corbyn began when Jeremy Corbyn was elected as Leader of the UK Labour Party in September 2015, following the resignation of Ed Miliband after Labour's defeat at the 2015 general election. Disillusioned by a lack of a left-wing voice in the 2015 leadership contest, Corbyn stood on an anti-austerity platform. Of the candidates who stood, Corbyn received the fewest parliamentary nominations. Many who nominated him said they had done so not to support his candidacy, but to widen the debate by including a socialist voice. However, Corbyn soon became the frontrunner and was elected with a landslide of 59%.
Corbyn appointed John McDonnell as Shadow Chancellor and promoted several female backbenchers, forming a Shadow Cabinet that for the first time had more women than men. Under Corbyn's leadership, Labour shifted to the left from the centre-ground. In November 2015, he voted against British military involvement in the Syrian civil war. He also opposed the renewal of the Trident nuclear weapons system and apologised for the Tony Blair ministry taking the UK into the Iraq War. In spite of his victory, Corbyn enjoyed little support from Labour MPs, although his support remained strong amongst Labour Party members. In 2016, Labour performed poorly at the local and regional elections, and following the European Union membership referendum, in which Britain voted to leave the EU, party opponents accused Corbyn of running a lukewarm campaign for Remain. Several resigned from the Shadow Cabinet and Corbyn lost a motion of no confidence by 197–40. Angela Eagle and Owen Smith launched a formal challenge, although Eagle later withdrew. Corbyn was re-elected with a marginally higher majority of 61%.
Although Labour suffered poor results at the local elections in May 2017, at the snap 2017 general election the party secured 40% of the vote with the biggest increase in Labour vote share for 72 years, and forced the Conservatives to form a minority government, with Labour remaining in opposition. In the 2018 local elections, Labour increased its share of the vote. In the 2019 local elections, Labour's seat total dropped by 84. In the 2019 European Parliament election, Labour came third behind the Brexit Party and the Liberal Democrats. In the 2019 general election, Labour's vote share dropped to 32%, winning the lowest number of seats since 1935. The result led to Corbyn's announcement that he would stand down as Labour leader. Some reasons for the defeat included concerns about Corbyn's leadership, the party's "ambiguous" position on Brexit, and concerns that the commitments in the left-wing manifesto were "undeliverable".
Leadership election
Following the Labour Party's defeat at the general election on 7 May 2015, Ed Miliband resigned as its party leader, triggering a leadership election. On 2 June, it was reported in media sources that Corbyn was considering standing as a candidate, having been disillusioned by the lack of a left-wing voice. The next day, Corbyn confirmed to his local newspaper, the Islington Tribune, that he would stand in the election on a "clear anti-austerity platform". He added: "This decision is in response to an overwhelming call by Labour Party members who want to see a broader range of candidates and a thorough debate about the future of the party. I am standing to give Labour Party members a voice in this debate". The other candidates were Shadow Home Secretary Yvette Cooper, Shadow Health Secretary Andy Burnham and Shadow Care Minister Liz Kendall. Corbyn had the lowest number of nominations from fellow MPs of any Labour Party Leader, and several who nominated him later claimed to have cleared him to run more to widen the political debate within the party than because of a desire or expectation that he would win. Nonetheless, he rapidly became the frontrunner among the candidates.
At the Second Reading of the Welfare Reform and Work Bill in July 2015, Corbyn joined 47 Labour MPs to oppose the Bill, describing it as "rotten and indefensible", whilst the other three leadership candidates abstained. In August 2015, he called on Iain Duncan Smith to resign as Secretary of State for Work and Pensions after it emerged that thousands of disabled people had died after being found fit to work by Work Capability Assessments (instituted in 2008) between 2011 and 2014.
