63 per cent of people surveyed by YouGov had an unfavourable view of the Tory leader, compared to just 29 per cent who said they had a favourable view.

YouGov’s latest figures show Mr Corbyn has secured his highest score to date after his popularity ratings surged from -42 in late April to +0.

Some 46 per cent of respondents said they had a favourable view of the Labour leader - exactly the same proportion that said that had an unfavourable view of him.