We visit Blyth, Bury and Penistone to find out what has changed in the three years since they turned blue
Three years on from 12 December 2019, when Boris Johnson broke through Labour’s “red wall” of constituencies in the north of England to win a seismic general election victory, Guardian writers return to three of them find out how those voters feel about him, the government, Rishi Sunak and Keir Starmer.
