The survey is part of a wider polling trend which has seen Jeremy Corbyn’s party go from being 24 points behind the Tories to being in with a chance of winning Thursday’s election.
Voters have reacted well to the party’s manifesto which includes pledges to renationalise the railways, raise taxes for high earners and corporations, and boost funding to the NHS and schools.
Meanwhile Theresa May has stalled in the polls after a middling reception to her ‘dementia tax’ plans and soundbite-fuelled campaign.
Despite their fall from grace, the Conservatives are still the overwhelming favourites to win the 2017 election.
Mr Corbyn remains optimistic, and has laid out how he would spend his first day in Number 10 should Labour win.
One of his first actions would be to ask Donald Trump to retract his “unacceptable” criticism of Sadiq Khan.
Mr Trump has been locked in a war of wards with the London Mayor since the London Bridge terror attack, sparking calls for his state visit to be postponed or cancelled.
Jeremy Corbyn is optimistic that Labour can win the general election
Mr Corbyn is also keen to speak to the US President about global warming.
We will immediately guarantee rights of EU nationals living in Britain
“One of my first conversations with Donald Trump will be about climate change,” he told The Guardian.
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He would also call Angela Merkel and Emmanuel Macron to smooth over relations and kick-start Brexit talks.
“We will immediately guarantee rights of EU nationals living in Britain unilaterally,” he said.
“I would hope [Ms Merkel] would make sure the same would be done for British nationals in her country and Europe but this is not a negotiation – we would do it anyway.”
Jeremy Corbyn would make a phone call to Donald Trump on his first day in at No 10 Downing Street
Mr Corbyn said that he would invite the German Chancellor to watch an Arsenal match and “discuss football and Brexit”.
Theresa May has criticised Labour’s Brexit plans and has said that Mr Corbyn would be left “naked in the negotiating chamber” if elected.
Mr Corbyn says that he would set a a “new tone” for negotiations, in contrast to Mrs May’s hardline stance.
“Instead of posturing threats and pumped-up animosity, a Labour government under my leadership will set out a plan for Brexit based on the mutual interests of both Britain and the EU,” Mr Corbyn said at a campaign event last week.
Labour has said that it will aim to retain tariff-free trade while taking back control of Britain’s borders.
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And despite Mrs May’s insistence that Brexit negotiations will start just 11 days after the election, EU officials have confirmed that talks could be delayed to allow Mr Corbyn more time to prepare.
A European Commission source told PoliticsHome: “If the UK was to turn around and say, ‘we need a bit of leeway’ – we don’t have a lot of leeway in the big scheme of things.”
There are only a number of months – less than two years – to do this, so there isn’t a terrible lot of scope. But the Commission will agree with the UK the dates for the first negotiating sessions.”
On the domestic front, Mr Corbyn says that he would immediately begin working on a snap Budget to implement key policies – including lifting the public sector pay gap.