OPINION - Keir Starmer has been crab-like and careful so far, but this election will test his weakest point

Sir Keir Starmer has many strengths, but earthy dynamism is not one of them. In Aesop’s fables, he is the wily and purposeful tortoise, not the fun and speedy hare. His temperament will not change — politicians rarely do — but over the coming weeks there will be new tests for the man who would be prime minister.