Corbyn and May are said to be neck and neck
However, new figures from consulting firm FTI suggest Corbynistas are less likely to show up on the day for a number of reasons including poor health or mobility issues, a busy day at work and traveling or out of town.
While 93 per cent of Tory voters said they would definitely turn out to have their say, only 88 per cent of Labour backers said the same.
Labour backers are less likely to turn up than Tory voters Election 2017 LIVE Wed, May 31, 2017
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Although this gap is small, FTO experts said it reflects the lack of enthusiasm from Labour backers – the same issue that stifled the Remain camp and Hillary Clinton’s US presidential campaign.
Dan Healy, head of FTI research, said: “There are very clear parallels in the voter base for Clinton, the Remain in the EU and Labour.
"All polled strongly leading up to the day of judgement, but arguably failed to emotionally engage supporters to command their motivation to actually vote on the day.
"Adding to this, all attracted a relatively young voter base and once again we're looking at them being significantly distracted from voting."
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Theresa May is hoping to win by a landslide on Thursday
Meanwhile, the survey shows while 80 per cent of Tory supporters would not change their mind on who to back, 71 per cent of Labour backers say the same.
More than 2,000 Britons were involved in the research, which was carried out between June 2 and June 4.