Editor’s Note: Nick Cohen’s best-seller, What’s Left? How The Left Lost Its Way was published by Forth Estate in 2007. It was hailed by Martin Kettle as ‘A roaring polemic of outrage against the moral and political crisis of the liberal tradition.’ For this new edition, published by Harper Perennial, Nick Cohen has added a new postscript. The editors extend their thanks to Nick for permission to republish it here.