Defeat for the Tories in two key byelections shows that tactical voting could put safe seats in play if replicated at a general election

Wakefield and Tiverton and Honiton are at opposite ends of the country geographically, socially and politically. But they have two features in common: both voted Leave heavily in 2016, and both turned against the Conservatives last week. Defeats on the same day in a northern “red wall” seat and a southern rural stronghold suggest that, six years on from the EU referendum, the Conservative majority Boris Johnson stitched together with a promise to “get Brexit done” is beginning to unravel.

For both opposition parties, the byelections have a distinctly 1990s flavour, with the return of a pattern from the Major years that has been largely absent in the past decade of Conservative government – voters in both seats seemed determined to eject Tory incumbents and flocked to the local opposition candidate seen as best placed to do so. Tactical coordination among Labour and Liberal Democrats voters is back, and if replicated at a general election, it could put a lot of seemingly safe Conservative seats in play.