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Jeremy Corbyn's campaign launched a new 'fact check' website tonight - with an inaccurate claim on the front page.

The site, CorbynFacts.com , aims to set the record straight about the Labour leader's accomplishments.

It features arguments on why Mr Corbyn is "serious about tackling sexism" and "serious about defence policy."

And it makes the case for why he has not "failed to build relationships with his parliamentary colleagues.

But in the third paragraph of the first post that appears on the page, it makes a very bold claim that "Before the recent attempt to remove Jeremy, we were neck and neck in the polls."

Here's our fact check of CorbynFacts' factcheck.

Was Labour neck-and-neck in the polls before the attempt to remove him?

The Fact Check website greets visitors by answering the question: "Is Jeremy Corbyn electable?"

In answering the question, the site notes some achievements made since Mr Corbyn became leader, including mayoral victories and increasing the party's vote share in the local elections.

And then it claims Labour were "neck-and-neck" in the polls before the attempt to remove Mr Corbyn as leader.

In tonight's debate in Gateshead, Mr Corbyn doubled-down on the claim, telling Owen Smith Labour were "ahead in the polls" before the challenge to his leadership.

This is, at best, selective use of data.

Here's an average of polls over the last year, including the complete period since Jeremy Corbyn was elected

According to Britain Elects, who maintain a rolling average of all national opinion polling undertaken in the UK, the last time Labour were neck-and-neck in the polls was in April 2015, a month before the last General Election.

On what are they basing the claim?

The Corbyn campaign haven't included any links or sources to back up any of the claims made on CorbynFacts.com.

But we asked them specifically for a source on this one.

They provided data from a single Survation Poll for the Mail on Sunday from June 26th 2016, two days after the Referendum, which had Labour tied with the Tories on 32%.

An ICM poll published the same day had Labour trailing by four points, however this included polling from the days prior to the referendum.

There have, since Mr Corbyn's election, been three other individual polls where Labour have tied or polled ahead of the Conservatives - all conducted by YouGov.

But over the same period UK Polling Report tracked some 81 polls which showed Labour trailing.

In response to claims Labour had been ahead or tied in the polls before the challenge to his leadership, Britain Elects had this to say earlier.

A spokesperson for Jeremy For Labour said the June 26th poll was "especially relevant as it's the poll with post- Brexit , pre coup sample."

Asked if they disagreed with Britain Elects assessment that it's better to look at averages rather than "picking and choosing polls" they said they did not.

They added: "The point is polling took a dive post-coup when we should have been focused on the national interest post Brexit . It was utterly predictable and damaging."

The spokesperson said they did not think the claim on CorbynFacts was misleading or inaccurate.