Will pro-EU voters ditch the Lib Dems in favour of a Labour Party that has been dragged only reluctantly to a mushier, more confused version of the position?
More likely, they hope they can force him to give them something they want – and in return they will continue to ignore their many misgivings about him.
No strategic judgement, no grassroots depth, no clear command structure, no unifying belief system, and a bunch of fractious personalities make for big trouble.
Flawed, of dubious judgement, and late to the fight. But if he’s the only big beast willing to challenge anti-semitism, at least it’s better than nothing.