Independent challenger for Mayor of London Rory Stewart has shot from nowhere to third place after a month of campaigning, an exclusive poll reveals today. Mayor Sadiq Khan has pulled further ahead in the 2020 race for City Hall, reveals the YouGov research commissioned by Queen Mary University of London’s Mile End Institute. Professor of Politics at Queen Mary University of London, Professor Philip Cowley, said that when people were asked who would be in the contest’s top two, Mr Stewart was very slightly ahead of Mr Bailey, and further ahead of the others, indicating he could “cut through.”PDF available on request: Evening StandardAlso featured in: MSN