Joyce rules out ever challenging Truss

Nationals deputy leader Barnaby Joyce says he will always be loyal to leader Warren Truss and will never challenge.

Agriculture minister Barnaby Joyce (AAP) Source: AAP

Barnaby Joyce says he will "never ever" challenge Nationals leader Warren Truss for the top job.

The deputy Nationals leader told the National Press Club in Canberra on Monday his job was to stand by the leader, describing Mr Truss as the "most experienced" person in cabinet.

"I am never ever going to challenge Warren Truss," Mr Joyce said.