Scott Morrison really has some colleagues worried: TONY Abbott has warned his cabinet not to take anything for granted and senior ministers have told colleagues to cease jostling over political territory and stop "jockeying." After months of internal competition between senior cabinet ministers over public-service turf wars and long-term ambitions to be the "heir apparent," the Prime Minister told ministers at Monday's cabinet meeting in Melbourne to concentrate on their jobs and take nothing for granted... A cabinet minister told The Australian yesterday that normal ambitions and anxieties of MPs who had been overlooked was understandable but competition between senior ministers "was at a whole new level." Another cabinet minister said it was ridiculous that, a year into what should be at least a two-term Abbott government there was positioning to become the heir apparent to Mr Abbott... In the past four months internal Liberal tensions have risen as Joe Hockey, Scott Morrison and Julie Bishop have been seen to be competing to be the successor to Mr Abbott as prime minister and over ministerial responsibilities. Morrison is clearly an under-used resource now that the boats have essentially stopped. That said, it is true that ministers of a government behind in the polls should worry more about survival than succession.