The Voice to Parliament No campaign has officially launched, with more than 1000 attending an event in Boorloo (Perth) on Sunday at Ascot Racecourse.

Backed by the Liberal Party, the No vote campaign event was headed by shadow spokesperson for Indigenous Australians, Jacinta Nampijinpa Price.

Senator Price told attendees the referendum debate is dividing the nation.

"This proposal is about dividing on the lines of race," she said.

The Country Liberal Party senator from the Northern Territory warned of the permanency of a constitutionally enshrined Voice.

"You can't simply roll back a bad amendment such as the Voice to Parliament," she said.

Senator Price cautioned employers of "ostracising" their workforce by supporting the Voice as a way to reach a reconciliation objective.

"In many ways, perhaps you are doing the job of the No campaign for us in ostracising your own employees," she said.

"When you're armed with the truth you can't fail."

Western Australian Senator Michaelia Cash, South Australian Senator Kerrynne Liddle and prominent No campaigner Warren Mundine were also in attendance.

Mr Mundine suggested the Voice debate had driven a surge in racial abuse.

"In the last 12-18 months, I've never seen so much hatred in this country," Mr Mundine said.

He said the Yes side "turned out to be the rednecks, racists" before labelling the Voice "bull****".

"As a Prime Minister .... this is a great way to unite the country: say 'anyone who votes No, who doesn't agree with me, you're Chicken Little, you're a dreadful person'," Mr Mundine said.

He called for a civil and mature discussion about the referendum.

"Say to the public that vitriolic attacks and abuse is not on," he said.

"We just want a conversation where people can prosecute their own case — whether it's Yes or No."

Senator Liddle said companies and organisations bankrolling the Yes campaign were participating in "a PR exercise", before saying "a whole plethora of people" were already providing advice in relation to Indigenous Affairs to all levels of government.

"Building something into the Constitution where people will need help and a Voice forever, you're on the wrong trajectory," she said.

"We have to continue to fight to get rid of this eternal, paternal Voice."

The event was also attended by WA Liberal MP Steve Thomas, as well as Federal Liberal MPs Matt O'Sullivan, Nola Marino, Dean Smith Andrew Hastie, Slade Brockman and Rick Wilson.

The Voice to Parliament referendum is set to be held in the final quarter of 2023.