Boris Johnson poised to become London Mayor as Tories seal local election success By Robert Winnett Last updated: 6:27 PM BST 02/05/2008 Boris Johnson is preparing to be unveiled as the new mayor of London later today following Labour’s collapse across Britain in the local elections. Senior Conservative sources said they would be “gobsmacked” if Mr Johnson did not win the mayoral contest and even Downing Street aides appear to have conceded that Ken Livingstone has lost. Confidence of a Tory win was boosted after one bookmaker announced it was paying out on a Boris Johnson victory hours before the...