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A $5 million donation has kick-started the launch of the yes campaign for an Indigenous Voice to Parliament.
The Yes Alliance announced the pledge from the Paul Ramsay Foundation on Thursday night in Adelaide at the Tandanya National Aboriginal Cultural Institute.
Hundreds of advocates and volunteers drawn from faith-based groups to business organisations, gathered for workshops on how they could win the referendum which will be held between between October and December.
Yes campaign director, Quandamooka man Dean Parkin, said the campaign will start taking the conversation to people to bring the country together for a successful yes vote.
"Recognition of Aboriginal and Torres Strait Islander people in Australia's constitution has been discussed in political circles very intensely in recent months," he said.
"It's time to bring that conversation to where it belongs, and back to where it started - with the people of Australia."
Australians for Indigenous Constitutional Recognition co-chair Rachel Perkins said the "campaign now has tremendous momentum as we head towards a referendum later this year that offers a chance for a moment of national unity".
Paul Ramsay Foundation director and Kuku Yalanji woman Natalie Walker said the foundation aimed to make a "lasting contribution" to positive social change, with the voice a "critical step" in doing that.
Opposition Leader Peter Dutton is yet to reveal what position the Liberal Party will take, and has repeatedly raised concerns about a lack of detail.
Prime Minister Anthony Albanese has accused Mr Dutton of trying to create confusion about the voice.
Mr Albanese said he wanted to secure maximum support for the voice and had agreed to demands by the Liberal Party to release a pamphlet outlining the "yes" and "no" cases.
Indigenous independent Senator Lidia Thorpe, who quit the Greens over her concerns about the voice, is yet to decide if she supports the proposal.
The Nationals have announced they will formally oppose the voice, despite a split within the party over the decision.
NT Senator Jacinta Nampijinpa Price will head a no campaign funded by conservative lobby group Advance Australia.