Boris Johnson lead just 2% - poll

23 April 2012 Last updated at 16:42 ET Help

A poll has suggested Boris Johnson's lead over mayoral rival Ken Livingstone has narrowed to just 2%.

Mr Johnson had opened up a wide lead in previous polls - but the new study suggests recent events nationally have hardened Labour's support in the capital.

London votes for its new mayor on 3 May.

Vote 2012

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