Would Siralan beat Boris?
The YouGov/Evening Standard poll also included various questions about Boris Johnson's mayoralty. Boris's overall net approval rating stands at plus 25, with 46% satisfied with the job he is doing as mayor and 21% dissatisfied. Asked about specific areas, there was strong net approval of his handling of London buses (plus 33) and the Tube (plus 27), slightly weaker approval of his performance on crime (plus 10) and a marginally negative verdict of how he has handled the recession (minus 2).
YouGov also asked how people would vote in a re-run between Boris and Ken - 49% would vote Boris, 33% Ken (respondents were not offered the chance of voting for other candidates, so this was not a genuine voting intention polls by any means, but since the London electoral system does redistribute votes between the top two candidates it offers a rough guide). Asked about an election between Boris and an unspecified Labour candidate Boris's lead was even larger, but that really was an articifical choice in an election that is largely about the individual mayoral candidates.
Finally YouGov asked who people would prefer in a contest between Boris and Sir Alan Sugar. This showed Sir Alan with a solid lead over Boris, 40% to 32%. It's worth noting that it was presented as "Labour not fielding a candidate", with the implication that Sir Alan was running as an Independent, rather than Sir Alan as the Labour candidate, which I suspect would have lead to rather different results.
There should be a ComRes GB poll later on tonight.