Te Tiriti o Waitangi has been a point of ongoing campaigning from the National, NZ First and ACT parties.
While National has not agreed to a Treaty referendum, it has agreed to substantial changes to Te Tiriti and its role in law.
In the coalition agreement with NZ First, the coalition has agreed to review all legislation - apart from treaty settlement acts - to remove references to "the principles of the Treaty of Waitangi" from law.
The coalition agreement said it would replace such references "with specific words relating to the relevance and application of the Treaty, or repeal the references".
In the ACT and National party agreement, the coalition agreed to support ACT's Treaty Principles Bill through the first of three readings in Parliament. That would mean a select committee would be asked to take submissions about the bill, which aims to redefine the principles of Te Tiriti o Waitangi. ACT had campaigned on holding a Treaty referendum. National has not committed to supporting that referendum, only starting the process which could see such a referendum be held.