The Labour Party itself is understandably keen to downplay the polls, with a spokesperson telling CNBC that the party doesn’t comment on projections, “as they vary and fluctuate.”

“Instead, we’re working hard to take our message of change to voters ahead of the only poll that matters, on 4 July,” the spokesperson stated.

On Monday, Keir Starmer said no vote should be taken for granted, asking his supporters to continue campaigning until polls closed on Thursday.

“The fight for change is for you, but change will only happen if you vote for it. That is the message we have to take to every doorstep these last few hours and days until 10 o’clock on Thursday night.”

“Nothing must be taken for granted, every vote has to be earned. The polls don’t predict the future, we have to get out there,” he told campaign supporters in Hitchin.

Labour’s former campaign and communications directors, Alastair Campbell, one of the chief strategists behind the rebranding of the party in the 1990s as ‘New Labour’ ahead of its monumental election win in 1997, told CNBC that he doubts current voter polls.

“I get really worried about about the way that these election debates are now unfolding, virtually everything in the debate at the moment is about these opinion polls,” he told CNBC two weeks ago.

“Apart from a few postal votes, nobody’s voted yet. And I just do not for one second believe that the Conservatives are going to get virtually wiped out, I just don’t believe it,” he said.

“I just think there’s something going very, very wrong with these polls, I could be completely wrong, and it’s true that Labour have been consistently ahead. But I just wish that, in our election periods, we would talk less about polls and more about what the parties are saying.”

Polling expert Matt Beech, director of the Centre for British Politics at the University of Hull, said Campbell’s position was designed to persuade Labour-inclined voters to cast their ballots.

“They want to make sure that they get as big a majority as possible. They’re all very much aware of [the lead-up to the election in] 1992 with the phenomenon of ‘shy Tories,’ when the polls said Labour would win and they didn’t …. [But] they’re not actually that genuinely worried about that. What they want to have a 1997-like landslide tsunami,” Beech told CNBC.

He added, “So if you keep banging on that drum [that the polls are not correct], you’re going to say to Labour-inclined voters, ‘please go out and vote.’ But it’s not that ‘we’re actually scared we’re not going to win, we are going to win comfortably. But we want a majority that enables us to push our agenda and we want this win to mean that we’re there for two terms.’“