Date: 3 September 2026 Tags: UK Politics, Green Party, Labour, By-election Summary: Green Party leader Zack Polanski wants to contest the Holborn and St Pancras parliamentary by-election. The election was triggered by former prime minister Sir Keir Starmer resigning as the constituency’s MP. Polanski currently serves in the London Assembly and has never been a Westminster MP. He still requires formal selection by local Green Party members before becoming the official candidat