Looking at the long-term shift away from the Conservatives, we have some places becoming a paler shade of blue: East Sussex, London, Merseyside and Cambridgeshire.
It is notable that East Sussex and Cambridgeshire are becoming less Conservative. For East Sussex, this is a trend that was already underway in the early 1980s, and which started in the mid-1990s in Cambridgeshire. By removing the effect of all the electoral shocks that have happened since 1983, this suggests that places like these are becoming (and may continue to become) structurally less Conservative over time.
