On a bracingly cold February night in Levenshulme, a black Volkswagen people-carrier draws up outside a little parish church, around which a small crowd has begun to gather. From behind the car’s darkened windows steps the Reform candidate for the Gorton and Denton byelection, dressed in the trademark gilet that makes him look less like a politician and more like a man who has come straight from a grouse shoot. As he enters the church where the electoral hustings will take place, a leaflet is thrust into his hand, which as he will later discover with a horrified grimace, is...