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 the designated timeframes: during the legislative session when apportionment is required or during specific periods following the release of the federal decennial census. If the census is released before September 1, the legislature can act in that calendar year; if released after, they have a 120-day window to make changes.

Additionally, the resolution allows for exceptions if a court or governmental agency invalidates existing districts or prohibits elections in those districts. In such cases, the legislature may enact necessary modifications within one year of the court's decision, but cannot do so while the Legislative Redistricting Board has exclusive jurisdiction over the districts. 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.