When puzzling over how on earth Harriet Harman won Labour’s deputy leadership, my mind went back to an episode of Auf Wiedersehen Pet. The boys had voted to choose a colour to paint their shared hut. The votes were counted – and pink won. They were all aghast. Neville explained that no one voted pink as their first choice – it had come through on second- and third-preferences. “Brilliant” said Oz. “So everyone gets what nobody wants.” That sums it up what’s just happened for Labour. Harman wasn’t ahead in any of the earlier voting rounds, but came up in the end as the second choices were tallied up.