There is also a variation to the residency requirement for anyone interested, usually you need to have been living in Australia for 3 years on any substantive visa + 1 year as a permanent resident.
However, those living with Australian partners overseas can still qualify even if they have not been living in Australia:
If you have spent time outside Australia as a permanent resident with your spouse or partner, or are the surviving spouse or partner of an Australian citizen and have a close and continuing association with Australia, then that period of time may be treated as time spent in Australia.
Australian Citizenship – Variation to the residence requirement
(Under "Ministerial discretions")