Sadiq Khan now has a 25-point lead over his Conservative rival Susan Hall, a new poll from YouGov has shown.
Khan, who is running for a third term in office, is on 49 per cent, while Hall is on 24 per cent.
This comes just two months before the Mayoral elections, taking place in May.
In Outer London, Khan is on 46 points, while Hall is on 27. In Inner London, Khan is on 54 points, ahead of Hall on 19 points.
Sadiq Khan now has a 25-point lead over his Conservative rival Susan Hall, a new poll from YouGov has shown
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The survey, conducted by YouGov for the Mile End Institute at Queen Mary University of London, excluded "don't know" and "would not vote".
Some 21 per cent of respondents said they don’t know who they would vote for if the mayoral election took place tomorrow.
Dr Elizabeth Simon, a researcher in British politics at QMUL, said: "If a sizeable proportion of currently undecided voters turned out to vote in the May 2024 contest, and if the majority supported the Conservative candidate, the race could get tighter.
"However, it appears unlikely, based on current figures, that this would be enough to shift the result in Hall’s favour."
Khan, who is running for a third term in office, is on 49 per cent, while Hall is on 24 per cent.
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She added: "Our polling clearly shows that Londoners have widespread concerns about policing, crime and personal safety in the city, and that many also worry about the affordability of living in London and their ability to access good-quality health services, in a timely manner.
"Addressing these concerns should be key priorities for the mayoral candidate elected in May 2024."
Khan found himself at the centre of a row over Islamophobia this week, after Lee Anderson claimed Islamists had "got control" in London and that Khan had "given away our capital city to his mates".
Lee Anderson claimed Islamists had "got control" in London and that Khan had "given away our capital city to his mates"
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The London Mayor accused Anderson of making "Islamophobic, racist and anti-Islam" remarks and accused the MP of "pouring fuel on the fire of anti-Muslim hatred".
Despite having the Tory whip suspended over the weekend, Anderson doubled down on his remarks yesterday, accusing Khan of overseeing "double standards for political benefit" in the way that pro-Palestinian marches are policed in London.
Sunak said Anderson's remarks were "wrong" and "not acceptable". But writing in the Evening Standard, the London Mayor accused Rishi Sunak of failing to call out Islamophobia specifically.
He said: "More than two days on from Lee Anderson’s vile racist, anti-Muslim and Islamophobic remarks, we have yet to hear the Prime Minister call it what it is: Islamophobic, anti-Muslim hate and racist.
The London Mayor accused Anderson of making "Islamophobic, racist and anti-Islam" remarks
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"Remarkably, Rishi Sunak released a statement yesterday on hatred in politics, but failed to mention anti-Muslim sentiment at all. Then his deputy, Oliver Dowden, repeatedly refused to accept that Anderson’s remarks were racist, anti-Muslim or Islamophobic. This speaks volumes."
He added: "It shouldn’t be hard to call out comments that are so unambiguously ignorant, prejudiced and racist. Yet those at the top of the Conservative Government are stubbornly refusing to do so.
"It’s a tacit endorsement of anti-Muslim hatred and can only lead to the conclusion that anti-Muslim bigotry and racism are not taken seriously. Racism is racism and should always be called out, whichever minority it is targeted against. There can be no hierarchy."