Think back three years. Boris Johnson had not only won an election with a sound majority. There were arguments that it could turn into a watershed. Jeremy Corbyn’s prime ministerial ambitions were over, to the heartfelt relief of many Tories. Bur for Labour, what would happen next? Rarely has a leadership candidate seemed more inevitable than Keir Starmer. Just as rarely, inevitability had no reinforcement from enthusiasm. It was faute de mieux, with all faute and little mieux.