Sponsor
Sean Casten
Representative · D-IL
Representative · D-IL
The bill aims to make House apportionment more proportional and give states tools for multi‑member/RCV elections—potentially improving equity and predictability—but does so at the cost of larger recurring federal expenses, increased administrative and legal complexity, and risks to some voters' influence and political stability.
Broad swaths of Americans would gain closer, more proportional representation because the bill sets a fixed divisor (1 Representative per 500,000 people) and enables expansion of the House, increasing the number of Representatives and improving constituent access.
Historically underrepresented groups (women and racial/ethnic minorities) are explicitly considered in apportionment recommendations, which could reduce disenfranchisement and make representation more equitable.
A clear, population‑based apportionment formula and an independent, expert-backed review (GAO/CBO/CRS-supported commission) would increase predictability, transparency, and evidence-based decisionmaking, reducing disputes over how seats are allocated.
Taxpayers would face substantially higher and recurring costs because a larger House requires more salaries, staff, offices, upgraded voting systems, and the Act authorizes open‑ended annual spending without a dollar cap.
Shifts in apportionment and the larger House could redistribute political power among States, provoking partisan disputes, transitional uncertainty, and perceptions of politicized outcomes.
Allowing multi‑member districts and new apportionment rules risks diluting individual voters' influence—especially minority voters—and could make it harder for some communities to elect preferred candidates.
Based on analysis of 6 sections of legislative text.
Sets House size equal to total State population divided by 500,000, allows optional multi-member districts and ranked-choice voting, creates a review commission, and authorizes open-ended House funding.
Official title: To establish the total number of Representatives at a number that provides that the average number of constituents represented by a Member from any State is equal to 500,000 and to apportion Representatives among the States accordingly, and for other purposes.
Introduced June 25, 2025 by Sean Casten · Last progress June 25, 2025
Changes how the size of the U.S. House of Representatives is calculated by setting the total number of Representatives equal to the resident population divided by 500,000 (applied after the next regular decennial census). Gives States the option to use multi-member congressional districts and to use ranked-choice voting in those districts, sets detailed RCV tabulation rules, creates a temporary 15-member commission to review large swings in House size, and authorizes open-ended annual funding for any additional House space, personnel, or resources required because of these changes.