New poll gives Sadiq Khan smallest lead over Susan Hall in mayor race

London’s mayoral race was dramatically stirred up by a new poll showing the smallest lead for Sadiq Khan ahead of Susan Hall since their campaigns got under way.With just a week to go to polling day, the Savanta survey for the Mile End Institute at Queen Mary University of London put the Labour mayor on 46 per cent, with his Tory challenger on 33 per cent, a lead of 13 points. Political Editor Nicholas Cecil reports.