That must mean that Labour are piling on votes in seats like this, surely? (ukpollingreport.co.uk)
This was the highest Conservative vote in any seat at a general election since a 75.7 % share in Kensington South in 1970. (en.wikipedia.org)
Although the Conservative vote in these seats was only fractionally down since the general election, a 4 - point drop in the Liberal Democrat share exclusively benefited Labour. (lordashcroftpolls.com)