A committee chaired by the federal opposition has urged the government to back 'yes' and 'no' campaign bodies ahead of the Indigenous voice referendum.
The call was made in an inquiry report tabled in parliament on Friday.
Labor senators on the committee said the government stood by its view that "non-government organisations should lead the campaigns, and that no public funding should be allocated to either campaign".
The committee also called for the removal of a limit on spending which was part of an initial bill putting in place the mechanism for the referendum.
And it said there should be provisions to ensure spending was directed in equal proportions to the 'yes' and 'no' campaigns.
A further recommendation sought a register of campaign bodies which would operate during the referendum process - a process that operates during general elections but won't do so for the Indigenous voice vote.
The electoral commission told the inquiry it would release a list of referendum campaign bodies 24 weeks after referendum day.
"A decision to change the Australian constitution is a significant national event," committee chair and Liberal senator Richard Colbeck wrote.
"Taken together, the committee does not consider that the regulatory framework in which this referendum will take place is sufficient to safeguard against the interrelated issues of the dissemination of misinformation and disinformation, the risk of malign foreign interference, and the increase in social harm and polarisation."
Labor senators said there were "carefully considered integrity and transparency measures" in place, which were backed at the time in parliament by coalition senators.
