This weekend I couldn't open Twitter without seeing some version of the below picture.
The idea behind this juxtaposition is that Labour's vote is now confined to former coal mining areas and London.
Which is an interesting hypothesis. If not one that is necessarily correct.
As Business Insider's Mike Bird was keen to point out, there are other correlations that also work... .
Or to put it simply, the correlation isn't coalfields as such but urban areas.