Out of the 44 seats, six of them are marginals that have never voted Conservative before.
Some of the big seats that could be won include West Bromwich East, where Labour’s deputy Tom Watson is standing down.
Two members of Mr Corbyn’s shadow cabinet could also lose their seats – shadow environment secretary in Workington Sue Hayman and Lesley Laid, the shadow Scottish secretary in Gordon.
The biggest gains are likely to be in the Midlands – including Dudley North, Wolverhampton North East and Wolverhampton South West.
