HCR2058 is a proposed amendment to the Arizona Constitution that would mandate the independent redistricting commission (IRC) to conduct a census every ten years to create legislative districts based on equal citizen population. The resolution establishes the State Census Fund, sourced from the Citizens Clean Elections Fund, to finance the census, which must be completed by December 31 of each year ending in zero. The IRC is required to use this data for mapping legislative districts, and the resolution includes provisions for using the most current Census Bureau data if necessary, prohibits federal practices inconsistent with Arizona's requirements, and grants standing to legislators to enforce the IRC census and mapping requirements. The resolution has passed committee and will be submitted to voters at the next general election.

The amendment aims to redefine the composition and responsibilities of the IRC, which will consist of five members with no more than two from the same political party, to be established by February 28 of each year ending in one. It details the appointment process for commission members, the criteria for establishing district boundaries, and introduces the requirement for a census of U.S. citizens in Arizona for redistricting purposes. The amendment also allows legislative members to enforce its provisions and includes findings that the 2020 federal census undercounted Arizona's population. The principle of "one person, one vote" is emphasized, and the Secretary of State is responsible for presenting the proposition to voters.