Jeremy Corbyn 2015 Labour Party leadership campaign

[5] However, following a series of televised and radio debates with the other three candidates, Andy Burnham, Yvette Cooper and Liz Kendall, Corbyn received the highest number of supporting nominations from Constituency Labour Parties, winning over 100 by the end of July.

[9] Corbyn's proposed economic policies, referred to as "Corbynomics" by some in the media, are reported to be "heavy influenced" from a blog created by political economist Richard Murphy.

[10][11][12] Corbyn's economic platform has been endorsed by a number of prominent economists, including David Blanchflower, a former member of the Bank of England's monetary policy committee, and Steve Keen.

They were among 41 academics who signed a letter to The Guardian which argued: "The accusation is widely made that Jeremy Corbyn and his supporters have moved to the extreme left on economic policy.

[28] It would also clash with Article 123 of the EU's Lisbon Treaty, which prevents central banks from printing money to finance government spending, and could cause a legal battle with the European Court of Justice.

[36] Jolyon Maugham QC, who had previously advised Ed Miliband on tax policy, criticised the plans and claimed to have found a £100 billion "black hole".

[37] Corbyn stated in August 2015, that "every child deserves the chance to learn a musical instrument, act on a stage, and develop their creative imagination" and that a Corbyn-led Labour Party would re-invest in cultural programs and arts education.

[39] Corbyn unveiled his arts policy document at a rally in Dalston, appearing alongside screenwriter Frank Cottrell Boyce and actress Julie Hesmondhalgh.

[41] In July 2015, Corbyn authored an article for LabourList in which he put the case for creating a "National Education Service", for decent skills, opportunities and "learning from cradle to grave".

[43] Corbyn's environmental policy, set out in his "Protecting Our Planet" manifesto,[44] involves developing a "resource-efficient, green economy", creating one million new green climate jobs, "leading an end to the era of fossil fuels" and transitioning to renewable energy, ending the Conservative government's policy of hydraulic fracking, addressing climate change and air pollution, conserving ecosystems and protecting the welfare of animals.

[45][46] Corbyn's platform has been welcomed by high-profile figures in the Green Party, including former leader Caroline Lucas[47] and Molly Scott Cato[48] and by The Ecologist magazine.

[64] On the subject of forming alliances with the SNP after the 2020 general election Corbyn was the only leadership candidate who confirmed he would be open to working with the party, saying to Aaron Bastani of Novara Media that "If there isn't a Labour majority but a minority and we've got to work with other parties – probably on the basis of a day-to-day arrangement or ... a supply arrangement then do that"[65] Corbyn also stated his opposition to meeting the NATO requirement of 2% of GDP spending on defence, arguing at the Daily Mirror hustings event, in August 2015, that NATO "should have been wound up in 1990" when the Cold War ended.

[68] On the 70th Anniversary of the Hiroshima bombing, Corbyn released a policy document detailing his opposition to the renewal of the Trident missile system, citing his support for unilateral nuclear disarmament.

[69][70] In September 2015, it was reported that Corbyn had been advised, by members of his campaign team, to put his controversial positions on NATO and the renewal of Trident "on the back-burner" in order to unify the party and prevent high-profile, moderate shadow ministers, such as Burnham and Chuka Umunna, from resigning.

[74] In August 2015, Nigel Farage, Leader of the UK Independence Party, wrote in The Daily Telegraph, inviting Corbyn to join him to campaign in favour of withdrawing from the EU.

[85] In August 2015, several publications queried Corbyn's connection with people and organisations accused of antisemitism such as Raed Salah and Paul Eisen of Deir Yassin Remembered.

[90] Corbyn described Holocaust denial as "obviously vile"[91] and his office released a statement to say he is "proud to represent a multicultural constituency of people from all over the world and to speak at every opportunity of understanding between Christian, Hindu, Jewish, Muslim and other faiths.

[99] On 21 July 2015, a YouGov poll for The Times, sampling the voting intentions of current Labour Party members, projected Corbyn to win the leadership election, with 43% of first preferences and 53% of the final redistributed total.

[106] The idea was denounced by Labour critics of the leader as part of an attempt to mobilise factionally, leading to the deselection of moderate MPs and councillors "who are not judged politically correct by the veteran Bennite organisers behind Momentum".

A Corbyn rally at Nottingham Albert Hall
Corbyn speaking at the Tolpuddle Martyrs' Festival and Rally in 2015