Instead of keeping his misgivings to himself, Blair, who hasn’t been an MP since 2007, chose to interject in the middle of an election campaign, essentially to share his lack of confidence in Corbyn and to urge Labour voters to consider voting Lib Dem or Tory. In that unforgettable Radio 4 interview, he strayed dangerously close to breaching the party membership rules, which specify against endorsing other parties. Arguing for tactical voting to elect MPs opposed to a hard Brexit, Blair said: “What I’m advocating may mean that. It may mean voting Labour. It may mean, by the way, that they vote Tory, for candidates who are prepared to give this commitment.”