Quotes from the campaign trail

LONDON (Reuters) - Londoners go to the polls on May 1 to choose the capital's mayor.

Here is a selection of quotes from the campaign trail:

"This mayor is going to cling on to office like a limpet with prehensile buttocks."

- Boris Johnson pokes fun at Ken Livingstone

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"The only real thing he's ever managed is a small right-wing magazine, where the most difficult decision was where to take the staff for lunch."

- Livingstone questions Johnson's previous experience.

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"I see no benefit, except that it might one day propel the present occupant of City Hall into orbit."