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Jeremy Corbyn's campaign has claimed he is set to thrash Owen Smith in his own back yard.

Internal polling, seen by the Mirror, puts the incumbent Labour leader ahead of his challenger in Pontypridd, his own constituency.

Some 64% of Labour members polled said they planned to vote for Jeremy Corbyn .

Just 29% said they would vote for Owen Smith . Some 5% were undecided and 2% wouldn't say which way they planned to cast their ballot.

But the Owen Smith campaign dismissed the numbers as a "blind assertion."

The campaign say pollsters contacted 56% of Party members eligible to vote in Owen Smith's Pontypridd constituency.

A spokesperson for the Jeremy For Labour campaign said: "These figures indicate that Jeremy Corbyn can reach out and draw on support from right across our party.

"It further shows the success of Jeremy's positive campaigning approach over the negative tactics of our rivals."

The figures match up with national polling, which suggest a landslide victory for Mr Corbyn.

A YouGov poll for the Times published last week placed Mr Corbyn 24 points ahead of Mr Smith, with a predicted 62% share of the vote.

But it's not all good news for Team Corbyn. A majority of the public think Corbyn is doing a bad job as Labour leader, and just 9% think he's likely to win a general election.

A spokesperson for the Owen Smith campaign said: "This isn't a poll - it is a blind assertion.

"Owen is confident he will win the backing of his local party. Our phone bank data has Owen comfortably ahead, and he won his CLP nomination by a landslide."

And Mr Smith referred to his own internal polling last week, claiming: "The phone banking we've been doing shows this is still balanced on a knife-edge. It's 50/50."

The leadership rivals will go head to head tonight in Oldham, in a live TV debate on BBC Question Time.