Zack Polanski and Keir Starmer BBC/APZack Polanski has admitted he is “tempted” to stand against Keir Starmer in his London constituency of Holborn and St Pancras. The Green leader has presided over a huge increase in party membership – more than 100,000 people have signed up since he was elected two months ago. AdvertisementSpeaking on her Sunday show, the BBC’s Laura Kuenssberg asked if Polanski wanted to compete against Starmer personally. He replied: “It would be very tempting to take Keir Starmer down. He said: “I want to see everyone de-nuclearise, including Vladimir Putin.”🚨 WATCH: Zack Polanski says it is “very tempting” to stand against Keir Starmer in Holborn and St Pancras"It would be very tempting to take Keir Starmer down....