- A “yes” vote supports upholding the new congressional district map under HB 1, enacted in 2025.
- A “no” votes repealing the new congressional map under HB 1, keeping the congressional map enacted in 2020.
Left: 2022 Approved Congressional District Map ……. Right: 2025 Challenged Congressional District Map
Missouri Proposition A, the Congressional Map Referendum, is on the ballot in Missouri as a veto referendum on November 3, 2026.
What changes would HB 1 make to Missouri’s congressional districts?
Currently, Missouri has eight congressional districts. There are six congressional districts—2, 3, 4, 6, 7, and 8—with a Republican U.S. Representative, and two districts—District 1 and District 5—with a Democratic U.S. Representative. The congressional map used during the 2022 and 2024 elections—and which will also govern the November 2026 general election—was drawn after the 2020 U.S. Census. The district plan was approved in 2022 by the Missouri General Assembly, as House Bill 2909, and was signed by Gov. Mike Parson on May 18, 2022. The map was first used in the 2022 midterm elections.
The congressional map contained in House Bill 1 (HB 1) passed the General Assembly in a 2025 special session, and was signed into law by Gov. Mike Kehoe on September 28, 2025. The congressional map under HB 1 would make most changes to the Kansas City area. Under the current congressional map, Kansas City is mostly contained in the 5th congressional district, while HB 1 would divide Kansas City across multiple districts.
President Donald Trump (R) said HB 1 “will, hopefully, give us an additional Seat in Congress” and “will help send an additional MAGA Republican to Congress in the 2026 Midterm Elections.” U.S. House Minority Leader Hakeem Jeffries (D) said, “Bowing to the demands of Donald Trump, corrupt Missouri Republicans advanced their mid-decade gerrymandering scheme today to try and rig the midterm elections in order to salvage the weak GOP House majority.”
The HB 1 map “breaks up a Democratic-held district in Kansas City and gives Republicans an advantage in seven of the state’s eight U.S. House of Representatives districts,” according to Reuters writer Joseph Ax. According to Inside Elections writer Nathaniel Rakich, “the old map had six seats that were R+10 or redder and two seats that were D+10 or bluer — and no seats in the competitive zone in between. This resulted in a congressional delegation that has consisted of six Republicans and two Democrats since 2013. The new map, however, features seven districts with a Baseline of R+10 or redder and leaves just one seat that is D+10 or bluer. There are still no seats between D+10 and R+10.”
The following maps compare the congressional districts enacted in 2022, which will govern the November 2026 general election, with the districts contained in HB 1.
What is the status of the veto referendum against HB 1?
On September 3, 2026, the Missouri Supreme Court ruled that the referendum petition was legal, and ordered the referendum placed on the November 3, 2026, ballot.
The campaign behind the veto referendum, People Not Politicians, reported submitting more than 305,000 signatures on December 9, 2025. In Missouri, placing a veto referendum on the ballot requires collecting signatures equal to 5% of the votes cast for governor in the most recent election in six of the state’s eight congressional districts. Therefore, the total number of signatures required depends on which six districts meet their respective thresholds. This number could range from 106,384 to 115,720.
Is HB 1 currently in effect?
HB 1 is not currently in effect. On September 3, 2026, the Missouri Supreme Court held that the referendum petition was legal. As a result, HB 1 did not take effect and will take effect only if approved by voters. Although the HB 1 districts were used for Missouri’s August 2026 primary elections, the congressional districts enacted in 2022 will govern the November 2026 general election.
