The federal government's contentious religious discrimination bill continues to split the coalition after a Liberal MP threatened to vote against the proposed laws.
Tasmanian MP Bridget Archer said she couldn't support the bill in its current form and wasn't sure if there was any way to "bridge the divide".
Ms Archer expressed concerns the bill would override state anti-discrimination laws protecting LGBT+ students.
"Tasmania has very strong anti-discrimination laws and as a Tasmanian, I know they have been very hard-fought laws," she told the ABC.
"We should do what we can to protect them, and to continue to not discriminate or not allow discrimination against anyone on the basis of any attribute."
The laws are listed for debate in parliament on Tuesday, when sittings resume for the year.
Labor frontbencher Kristina Keneally said the opposition supported the principles of not discriminating against children in schools or against people of faith.
"Let's be clear - Labor supports people of faith being able to live without being discriminated against," Senator Keneally said.
"We also support that children who are in schools not be discriminated against because they are lesbian, gay, transgender or the like."
Asked if Labor would take a position on amending the Sex Discrimination Act - separate from any religious discrimination bill - to the next election, Senator Keneally said all policies would be made known before the poll.
"But I would point you to the fact that Senator Wong had already introduced a private senator's bill that sought to protect students in schools," she said.
Both Labor and coalition party rooms will discuss the bill ahead of the debate.
"Clearly the bill requires amendments. The government's admitted that, so we're waiting for the final version of the bill," Senator Keneally said.
It remains unclear whether the government will reach a consensus position within its own ranks.
Support from a group of moderate Liberal MPs hinges on the removal of a part of the Sex Discrimination Act that allows religious schools to discriminate against students.
Any such changes would risk the government losing the support of more conservative MPs as well as Catholic lobby groups, who have said they would pull their support for the bill if any changes were made.
Ms Archer said protections for students and teachers should also be enshrined as part of the laws, following concerns religious schools could unfairly expel or sack people based on their sexuality.
The Bass MP joins two other Liberal MPs who have indicated they won't support the bill without substantial amendments.
Ms Archer said talks had been ongoing between herself and Prime Minister Scott Morrison about the bill and one of her key concerns with the legislation as it currently stands was a "statement of belief" clause.
The statement of belief would allow comments that offend, humiliate or insult others as long as they express a person's faith and are not malicious.
"It seems to me that the statement of belief provision is integral to what is trying to be changed," Ms Archer said.
"That is probably where the impasse is from my point of view, so I don't see how that can be bridged."
The Greens plan on moving amendments to remove the contentious statement of belief section and remove the section of the Sex Discrimination Act allowing religious schools to discriminate.
Ms Archer crossed the floor last year to support a federal anti-corruption body.
The 151-seat lower house has 76 coalition MPs, 68 Labor and seven crossbench members.
