Boris Johnson has taken a narrow lead in the race to become London mayor, according to a poll of potential voters in the capital.
The Guardian/ICM survey showed the Tory candidate ahead with 42% of first choice votes, compared with Ken Livingstone's 41% and Liberal Democrat Brian Paddick with 10%.
Under the electoral system - which will take into consideration second-choice votes if there is no overall winner - Mr Johnson would win with 51% of the popular vote, with Mr Livingstone on 49%.
Pollsters interviewed more than 1,000 people in the capital over their views on the main candidates. The results showed that most Londoners believe Mr Livingstone has done a good job, even if they do not intend to back him in the May 1 election.
Overall 51% said the current mayor had been good for London, compared with 39% who say he has been bad.
Non-white voters tended to view Mr Livingstone more favourably, with 64% believing he had been a good mayor, compared with 46% of white Londoners.
When it came to who voters thought had the bigger appetite for the job, Mr Livingstone and Mr Johnson could not be separated, both pulling in 42% of the popular poll.
Responding to the latest poll, Mr Livingstone said: "As the election gets closer, Londoners are concentrating on the big policy issues that will affect their day to day lives - transport, crime, housing, community relations, the environment and the ability to practically run London. That's where I'm picking up support and Boris Johnson is losing ground.
"I'm particularly pleased by those, in addition to Labour supporters, who have said they are going to vote for me in the first or crucial second rounds - Jonathon Porritt, Greg Dyke, and the Green Party, for example - because these are part of the progressive majority coalition that represents London against the narrow conservative one around Boris Johnson."
A spokesman for Mr Johnson's campaign said: "The only poll that matters is May 1. From now until polling day, we will continue to communicate to voters Boris Johnson's plans to make our streets and communities safer, our transport system more efficient, our roads less congested and the need to defend our green spaces and his determination to deliver value for money."