Scott Morrison's revolting backbench

Religious discrimination, voter ID laws, a federal anti-corruption watchdog: Scott Morrison's end-of-year parliamentary to-do list is long. So why is a group of the government's own parliamentarians trying to derail it with a fight over state vaccine rules? Today on The Signal, why backbenchers are revolting, and what it might mean for the Morrison government's re-election. Featured: David Speers, Host, ABC TV Insiders