The proposed joint resolution seeks to amend the Texas Constitution by adding Section 28A to Article III, which would impose restrictions on the timing of legislative actions regarding the apportionment or modification of districts for both the Texas Legislature and the United States House of Representatives. Specifically, it stipulates that the legislature can only enact or modify these districts during designated times: when the legislature is required to make apportionments following the federal decennial census or within a specified period after the census is released. Additionally, it allows for exceptions in cases where a court or governmental agency invalidates existing districts, permitting the legislature to act within one year of such a ruling.

The resolution also outlines that if the census is released on or before September 1, the legislature can make changes in that calendar year; if released after, they have a 120-day window to do so. The proposed amendment will be presented to voters in an election scheduled for November 3, 2026, allowing them to decide whether to support the limitation on the legislature's ability to modify district boundaries.