Barnaby Joyce has reclaimed his job as leader of the federal Nationals party after ousting Michael McCormack in a leadership spill on Monday morning.
Mr Joyce also now becomes deputy prime minister.
He was forced to relinquish the role in February 2018 following revelations about his affair with former staffer and now-partner Vikki Campion.
The decision is also significant for how it could impact the Coalition’s climate change policy.
Mr McCormack has faced severe criticism of his leadership, the Nationals party’s broader direction and his perceived inability to rein-in Prime Minister Scott Morrison’s shifting language on emissions reduction.
More to come.