Senator Jacinta Nampijinpa Price has signalled the Country Liberal Party will oppose the Indigenous Voice to parliament.
In an interview on ABC's 7:30 on Monday night, the Northern Territory senator made the indication after claiming the argument the Voice is necessary does not reflect the viewpoints of many First Nations people.
She said the Australian government needs to "use their ears and to listen to community".
On Monday Greens' leader Adam Bandt pledged his party's support for the Voice after Lidia Thorpe cut ties with the party, while the Liberal party is yet to state their position as Peter Dutton continues to ask for more detail on the proposal.
The National Party announced their stance against the Voice late last year at a press conference at which Senator Price also rejected the idea.
Asked on Monday if the CLP will side in concert with her view she said "I think you'll find in the coming weeks that's exactly the position that they will hold".
Ms Price said "a lot" of Indigenous people do not agree with the Uluru Statement; a key contributor to Labor's policy to hold the referendum.
"This is what has been now bought by the Australian people as representative of all Indigenous Australians, which is utterly wrong," she said.
She described the proposal "as another form of gatekeeping" for a community already "over-governed" and said the Voice suggests Indigenous people will forever be disadvantaged.
"How that representation is implemented is still completely in muddy waters as far as I'm concerned," she said, despite the publication of a number of detailed reports on the proposal, including one former Minister for Indigenous Affairs Ken Wyatt urged Nationals MPs to read.
Senator Price said that if the Parliament of the day is "going to determine how this Voice looks" then she sees it "as providing an opportunity to be a Trojan horse".
"We know that this current Labor government can push through any sort of legislation that they want, and if they think it's going to be the answer to everything why haven't they legislated it right now?"
Statements that this would not be the case from Chief Justice Robert French and Justice Kenneth Hayne were cited by 7:30 host Sarah Ferguson.
Senator Price claimed it was possible matters could be taken to the High Court if "proponents of the Voice were not happy that their representation was not adhered to or listened to".
The senator discussed the Voice after offering her critique of Monday's announcement of reinstated alcohol bans across central Australia.
Northern Territory Chief Minister Natasha Fyles said the restrictions will come into effect from next week, but was steadfast in claiming the move is not a return to the Stronger Futures legislation which ended last year.
Instead, the new measures are based around community-decision making.
Individual communities will be able to opt-out of the bans provided they develop alcohol management programs and meet 60 percent agreement to lift the prohibitions.
Ms Fyles and Prime Minister Anthony Albanese announced an additional $250 million investment into a range of measures to address underlying issues in remote communities.
On Sunday, The Australian reported Senator Price was preparing to introduce a bill in Parliament to put Stronger Futures legislation back in place alongside heartbreaking accounts of her life experiences, including family deaths and distress, as a result of alcohol abuse around the Alice.
While supportive of measures to create safer communities, she said the plans will not be a "silver bullet".
She also claimed faith in the NT government's ability to correct the current issues is patchy across communities.
"The measures that I've been calling for (in) the bill that I've been preparing since August, which is pretty much a carbon copy of what now the territory government claims that they are going to apply," Ms Price said.
"The word trust and the Territory Government in the same sentence just don't go right now.
"We have been calling out for months, stating that we're terrified of the fact that we knew that removing the cashless debit card as well as lifting the Stronger Futures legislation."
She said the NT Government has delayed action and "no matter how much money you throw at this situation, it's not going to work if it's just a band aid solution".
She said her bill "is about a partnership of taking responsibility on a federal level and with the territory government, not just the federal government hand-balling this over for the Territory Government to fail us once more."