The next leader should focus on building support among young people, families and precarious workers around urban centres

The candidate who secures the mandate of the Labour membership in April will require humility and subtlety. Humility, because the size of the Tory majority is formidable; subtlety, because the electorate is changing in ways that suggest there is no easy path to revive Labour’s vote share.

To win the most seats at the next election, let alone form a majority government, the new leader will need to engineer a breakthrough in several parts of the country simultaneously, from politically ambivalent Cornwall to the new SNP strongholds in Scotland. Along the way, of course, large chunks of support will need to be clawed back in the so-called “red wall” areas of the post-industrial north and Midlands, which turned so decisively blue in 2019.