From the seats that have declared so far it is clear that traditional Labour heartlands are beginning to fall:
Places like Wrexham – which Labour had held since the 1930s.
Like Workington – which has been Labour since the 70s.
Like Blyth Valley – which until now had never had a Tory MP.
Like Leigh – where Labour has won since the 20s.
This suggests Boris Johnson’s strategy of trying to persuade Labour voters to make the break has worked.