LABOUR is in the midst of a roller-coaster leadership election. Today a court ruled that the 130,000 people who have joined the party since January (most of them supporters of Jeremy Corbyn) will not be able to vote. That is a blow to the party’s far-left leader, but he will probably still win. So it remains incumbent on Labour’s MPs—who with their surgeries and door-knocking have a much better grip on political reality than their leader and his well-heeled base—to contemplate a future without him.