What are the arguments against the Voice?
The official No campaign says the voice is a "radical" proposal that will "permanently divide" the country by giving First Nations people greater rights than other Australians.
It also argues the Voice is a "a leap into the unknown" because it hasn't been "road tested", pointing to the lack of detail about how the advisory body would operate.
But constitutional experts say the Voice does not confer special rights on anyone. And if the reform passes it would be up to parliament to design the body - giving lawmakers the power to change it over time.
Other No arguments stem from the assertion that it would ineffective and tokenistic, due to its inability to veto legislation.
And some Indigenous-led movements say they want a treaty instead of this Voice platform. They say a legally binding, negotiated agreement with First Peoples should be the priority.