No one has yet produced a shred of evidence that any potential successor could do any better in terms of policy or personality. It is time they set out how they would, says Simon Walters W ith enough results in from the town hall elections to show Labour is set for huge losses, Keir Starmer’s critics are already writing his obituary . The first counts had barely been completed when his Labour opponents like former shadow chancellor John McDonnell said he should prepare to go. Other Labour MPs