The leader of the United Kingdom's Green Party, Zack Polanski, is running to replace former Prime Minister Keir Starmer in Parliament.

Former PM says it is right time to go, which will trigger byelection that Greens’ Zack Polanski could target

When Sir Keir Starmer announced that he was standing down as an MP on Tuesday, jubilation erupted among Green activists. Zack Polanski’s party has already proved it can take on…

Election will post early test for new prime minister Andy Burnham