Under the UK’s grotesque electoral system, a national breakthrough by a small party is more or less impossible. But in the new constituency of Bristol Central, the Green Party leader Carla Denyer is running Labour’s Thangam Debbonaire very close in the polls. Accounts of the race in the national press often recreate stereotypes of Bristol being somehow alternative, ‘bohemian’, quirky, as if voting Green were a bourgeois eccentricity reserved for people who play lyres and wear purple shirts. But the Green wave in Bristol has been a long time coming, and has its roots in disaffection with the way the city has been run at a local level. It also tells us something instructive about Labour in power, which may prefigure what happens when Keir Starmer takes over as prime minister in July.