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 such changes during the designated timeframes: during the year the federal decennial census is released or within a 120-day period following the release of the census if it occurs after September 1. This amendment aims to create a more structured and predictable process for redistricting.

Additionally, the resolution allows for exceptions in cases where a court or governmental agency invalidates existing districts or prohibits elections in those districts. In such instances, the legislature would have one year to enact necessary modifications, but it cannot do so while the Legislative Redistricting Board has exclusive jurisdiction over those districts. The proposed amendment is set to be presented to voters in an election scheduled for November 3, 2026, allowing the public to decide on the limitation of legislative powers concerning district modifications.