House Bill No. proposes an amendment to the Montana Constitution to repeal Article XIII, Section 7, which currently prohibits same-sex marriages. The bill includes a new section that outlines the repeal of this provision, as well as a requirement for a two-thirds affirmative roll call vote from all members of the legislature for the amendment to pass. Additionally, the bill specifies that if approved by the electorate, the repeal will take effect on January 1, 2027.

The bill also mandates that the proposed amendment be submitted to the qualified voters of Montana during the general election in November 2026. The ballot will include the full title of the act along with options for voters to indicate their support or opposition to the constitutional amendment.