Missouri Voters Will Decide Congressional Map Change

The ballot measure asks voters to approve new congressional districts to replace the 2022 plan.

Updated on Sept. 21, 2026 in Elections

Isometric editorial illustration featuring interlocking abstract geometric partitions in muted tones of oxblood and slate blue, representing systemic boundary changes. — Missouri voters will head to the polls this November 2026 to vote on a ballot measure proposing new congressional district boundaries for the state. AI Illustration. Upload story photo >

Live Poll

Do you support changing congressional district boundaries through a ballot measure in your state?

Missouri voters will head to the polls this November 2026 to decide on a ballot measure that would replace the congressional district map enacted in 2022. The measure follows the General Assembly passing House Bill No. 1 during the 2025 Second Extraordinary Session.

Why it matters

Proponents of the new map claim the boundaries are more compact and adhere to constitutional requirements, while opponents argue the change is designed to shield politicians from voter accountability.

Polling data shows an even three-way split in voter opinion regarding the redistricting measure. Total campaign spending on the ballot question has exceeded $10 million, with $7 million specifically allocated to oppose the new map.

The players

General Assembly

This is the state legislative body responsible for passing laws and the redistricting bill currently under review by voters.

Saint Louis University

This academic institution provided the polling data used to analyze the current state of public opinion regarding the ballot measure.

The details

Voters will cast their ballots to either approve the new boundaries proposed in House Bill No. 1 or retain the existing 2022 map. State and local government officials estimate that the measure will have no impact on taxes, costs, or state savings.

The existing congressional district boundaries were enacted in 2022.
The General Assembly passed House Bill No. 1 in 2025.
Missouri voters began receiving absentee ballots the week of September 21, 2026.
The final vote on the ballot measure is scheduled for November 2026.

Political Context

This ballot measure serves as the electoral test for House Bill No. 1, which was passed by the General Assembly during its 2025 Second Extraordinary Session to redefine the state's congressional districts. Critics argue the new boundaries dilute the impact of the electorate and protect incumbents.

The result of this vote will determine the legislative boundaries that shape future congressional representation for Missouri residents. While state officials estimate no direct impact on taxes, the map will influence the political environment for the state's districts.

The takeaway

Voters are currently evaluating a divided proposal that has drawn millions of dollars in campaign spending. The outcome will decide which set of congressional boundaries governs representation for the coming election cycles.