Politics with Michelle Grattan: Barnaby Joyce on getting on with Pauline Hanson and One Nation’s rise

Barnaby Joyce s political career has hit the highest of highs and the lowest of lows. He s been Nationals leader and deputy prime minister twice. As a senator, he was a maverick, often crossing the floor. As party leader, he had a dramatic falling out then prime minister Malcolm Turnbull. Later he delivered vital Nationals support for net zero emissions to then prime minister Scott Morrison, even while personally disagreeing strongly with the policy. Just two months ago, he decamped to the