Missouri’s Map Reversal, Explained: Why November Runs on the 2022 Lines
The August primaries ran under a map that redrew Rep. Emanuel Cleaver’s district to favor Republicans. The general election won’t. Here’s how Missouri got here, what’s on the Nov. 3 ballot, and what it does to the fight for the House.
Missouri voters picked their congressional nominees on August 4 under one map and will elect their members of Congress on November 3 under another. On September 3, the Missouri Supreme Court unanimously blocked the Republican-drawn 2025 congressional map and ordered it put to voters as a referendum on the November ballot. Three times in September — on the 8th, the 10th and the 25th — the U.S. Supreme Court declined to let the 2025 map be used anyway. The result: Missouri’s 2026 House races will be decided on the 2022 lines.
How Missouri got here
Missouri was one of the states that joined the mid-decade redistricting push in 2025. Republicans in the legislature passed a new congressional map aimed at the one Democratic seat they could realistically take: MO-05, held by Rep. Emanuel Cleaver, which the new lines redrew to favor Republicans. Opponents gathered signatures to force a statewide referendum on the map. The question that followed, through months of litigation, was whether the map could be used while that referendum was pending.
For most of 2026, the answer appeared to be yes. The August 4 primaries were run under the 2025 map. In MO-05, state Sen. Rick Brattin won the Republican nomination to face Cleaver in a district drawn to favor Republicans. Cook Political Report had rated the redrawn seat Safe R.
What changed in September
September 3 · Missouri Supreme Court
In a unanimous ruling, the state’s highest court blocked the 2025 map and ordered it placed before voters as a referendum on the November 3 ballot.
September 8, 10 and 25 · U.S. Supreme Court
The Court declined three times to reinstate the 2025 map. The September 10 order stayed a federal judge’s temporary restraining order that had briefly allowed the 2025 map to be used, according to St. Louis Public Radio. PBS reported the September 25 order as the Court’s third rejection of the map.
The nominees chosen in the August primary stay on the ballot. They now run in the 2022 districts that correspond to their seats.
What it means for MO-05 and Emanuel Cleaver
Under the 2022 map, Cleaver’s district covers most of heavily Democratic Kansas City. Instead of running in the redrawn Republican-leaning seat, he faces Brattin in one he has held comfortably. Cook now rates MO-05 Solid D.
That takes a likely Republican pickup off the board: Missouri’s new map will not be used this year.
What’s on the November 3 ballot
Missouri voters will decide the fate of the 2025 map directly. A vote to approve it would ratify the map the legislature passed; a vote to reject it would repeal it. Either way, this year’s House elections use the 2022 districts. The referendum decides what happens after 2026.
Check which district you live in under the 2022 map, not the 2025 map used for the August primary. If you voted in the August primary, your November congressional race may be a different one.
Your county election authority can confirm your district and send you a sample ballot.
The bigger picture
With early voting already underway in several states, the map fight is over for 2026. New maps are in use in Texas, California, North Carolina, Ohio, Utah, Florida, Tennessee, Alabama and Louisiana. Virginia, Georgia and South Carolina stayed with their existing lines, and Missouri joined them in September. Cook’s House ratings, updated September 25, show 208 seats at least leaning Democratic, 205 at least leaning Republican, and 22 Toss-Ups. Democrats need a net gain of three seats. In a House that close, one district in Kansas City matters. We break down the full board in Cook’s 22 House Toss-Ups.
Sources
- Missouri Independent: Missouri Supreme Court blocks map, orders referendum (Sept. 3)
- St. Louis Public Radio: U.S. Supreme Court effectively blocks the map (Sept. 10)
- PBS NewsHour: Supreme Court rejects the map for a third time (Sept. 25)
- KCUR: Supreme Court again blocks the map (Sept. 25)
- Cook Political Report: House race ratings