Boris Johnson was rocked by an opinion poll last night showing he is trailing rival Ken Livingstone in the race to be London mayor.

With just over 100 days to go to the May 3 election, the survey for the Evening Standard put Mr Livingstone ahead by 51 per cent, with Mr Johnson on 49.

Mr Johnson has squandered an eight-point lead in just two months, while former mayor Mr Livingstone surged ahead after pledging to scrap Mr Johnson's public transport fare increases.
Under threat: Mayor for London Boris Johnson talks about transport fare rises at Finsbury Park station as Ken Livingstone supporters protest behind him

Under threat: Mayor for London Boris Johnson talks about transport fare rises at Finsbury Park station as Ken Livingstone supporters protest behind him

Political expert Professor Tony Travers, of the London School of Economics, said: 'This looks like a knife-edge contest. Boris Johnson now needs to fight back.'

The poll shows Mr Johnson remains ahead of his rival on his ability to fight crime and handle the capital's economy. He also has most of his support in the suburbs while Mr Livingstone dominates the inner-city areas.

Read more: http://www.dailymail.co.uk/news/article-2090678/Mayor-London-elections-2012-Blow-Boris-Johnson-poll-puts-Ken-Livingstone-ahead.html#ixzz1kQpYK6RB

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Very close.