A new Nationals leader and Michaelia Cash's outburst, welfare drug tests, One Nation rejects company tax cuts and the push to save caged chickens.

Barnaby Joyce steps down as Nationals leader, wages growth, elder abuse and the Coalition battles over Australia's migration intake

Barnaby Joyce saga continues, wages growth, elder abuse and disagreement on migration.

Barnaby Joyce's affair dominates politics as the PM implements a sex ban, 10 years since the national apology to the Stolen Generation, Ken Wyatt gives an in-depth look about the future of Closing the Gap, and the Royal Commission into the banks gets underway.

- Parliament returns

- Adani protests

- TPP trade deal

- Defence exports

Sam Dastyari quits parliament, a Liberal veteran reflects on his journey to legalise same-sex marriage, the liberation of Iraq from Islamic State and a controversial proposal to deport violent teen migrants.

The dual-citizenship saga pushed into the New Year as one of its first victims returns to parliament, same-sex marriage is legalised, economic growth figures, and a chat with Australia's youngest Senator

The government's backflip on a banking Royal Commission, same-sex marriage passes its first parliamentary hurdle, the fall-out from the Queensland election and more help for Australians on their bills.

The Prime Minister delays the return of parliament, same-sex marriage debate heads to the Senate, the government spruiking policy and Warren Mundine on his political rise.

Same-sex marriage now a step-closer to becoming a reality, the dual-citizenship saga takes another unexpected twist, the PM takes a whirlwind trip to south-east Asia, and a one-on-one with new Senator Fraser Anning.