Pollsters are predicting massive defeats for the Conservatives in Kent at the general election on July 4. Thirteen of the 18 seats in the county will go to Labour, even those in previously solid Tory heartlands. Among MPs to lose would be Damian Green (Ashford), Damian Collins (Folkestone and Hythe), Laura Trott (Sevenoaks) and Gareth Johnson (Dartford), according to Electoral Calculus (EC). EC analyses all polling and voting trends in the UK but does not take into account very local matters such as a controversial house-building proposal or loss of a public amenity. But it does feed in attitu…