The difference between 2015 and 2019 vote share, adjusted for national swing reveals which areas are more or less Conservative than they were pre-Brexit.
Most of the seats that became 10 points less Conservative than average are in and around the Greater South East, except Altrincham & Sale West and Rushcliffe. This list includes two seats of former Conservative Prime Ministers – Witney and Maidenhead – while Uxbridge became 4.96 points less Conservative than average. By contrast, the Conservatives have strengthened their position all along the English east coast, around the Black Country, and Staffordshire.
