Labour suffered a seismic defeat in the once-safe Manchester seat Sign up for the View from Westminster email for expert analysis straight to your inbox Get our free View from Westminster email Get our free View from Westminster email Email * SIGN UP I would like to be emailed about offers, events and updates from The Independent. Read our Privacy notice The Green Party has swept to victory in the Gorton and Denton by-election , snatching what was one of Labour ’s safest seats and delivering a