Are the wheels coming off Boris Johnson's bus?

The once-seemingly unstoppable PR campaign behind Johnson is faltering. Roaring ahead of his rivals, it looked at one point as if the Tory leadership contest might end in the much-anticipated “coronation” of Boris Johnson. But as the frontrunner continues to struggle with the fallout from the Guardian’s revelations of a late night row with his girlfriend, coupled with some distinctly shaky interviews, questions are being asked about whether the once-seemingly unstoppable PR cam