The latest Comres poll now puts Sadiq Khan ten points ahead of Zac Goldsmith in the race for City Hall. With one month to go until polling day, and only two weeks until Postal Votes start to arrive, the 10-point cushion enjoyed by Labour’s man looks quite commanding. But we’ve been here before and if we were to believe the polls a year ago we would have Prime Minister Miliband in charge not a Cameron Government. Sadiq isn’t complacent. He’s a machine politician to the core and he knows not to take his foot off the pedal in the final month, especially when the Tories’ tax affairs plagues his opponents.

It’s not just the PM’s tax history that is helping Sadiq: Tory canvassers privately, and not so privately, bemoan Zac’s position on the EU Referendum. Like it or not the London Mayoral election has not gripped the capital but the EU Referendum is hard to escape. You are more likely to see Leave or Remain campaigns leafleting at Tube stations that volunteers from the two Mayoral teams. That’s an inevitable complication of the 23 June vote but one that is helping Sadiq’s campaign in particular. London is a metropolitan, left-leaning city, multi-cultural and internationalist in outlook. Without the charm and humour of Boris, Zac’s Brexit position looks uncomfortable and increasingly out of touch with Londoners. Not as uncomfortable as Zac’s awkward interview in the back of a taxi though. A week is a long time in politics and a month is a very long time. Unless the Tories are holding back a scandal of epic proportions, and it looks like they’ve thrown everything they have at him already, then Labour could be about to regain the capital.