Boris Johnson is to stand as an MP in 2015 — but where? In the next few weeks, his secret parliamentary campaign team (and there is one) expects him to pick his constituency. The Tories need a decision by the beginning of September, as an announcement any closer to the party conference will overshadow David Cameron’s own plans to talk about the manifesto, rather than watch hopelessly as cameras and journalists trail after Boris, asking the same question over and over again.