From Bollywood blunders to accusations of racism from all sides: there's no denying the mayoral campaign was divisive. But after Sadiq Khan's landslide win, what will be his first big challenges? Chewing over what will dominate in the first 100 days, are City A.M. digital editor Emma Haslett and stock trader Zak Mir - joined today by City A.M. editor Christian May and political pundit David Cracknell.