600,000 people have signed up for updates on Corbyn and Sultana’s leftwing party. What is it called? You name it

Scathing rightwing coverage contains a revealing note of alarm: this is more than just a rebellion, and it’s gaining supporters fast, says Guardian columnist Andy Beckett

600,000 people have signed up for updates on Corbyn and Sultana’s leftwing party. What is it called? You name it