Would Rishi hold the Red Wall?

I think Rishi Sunak would be a disaster for post-Brexit conservatism

Boris Johnson, so the joke goes, is the third Prime Minister to have been brought down by Boris Johnson. After demolishing David Cameron by campaigning for Brexit, and then fatally wounding Theresa May by opposing her soft Brexit deal, Johnson then blew himself up by failing to get his arms around his premiership and his party.

The fall of Johnson has n…