
Missouri Congressional Districts / Click on image to go to Dave’s Redistricting interactive map.
By Jim Ellis — Monday, Oct. 6, 2025
Redistricting
Missouri Gov. Mike Kehoe (R) signed the legislature’s new congressional redistricting map this week, so it appears that the Show Me State delegation will compete in new districts next year.
Naturally, lawsuits are being filed to nullify the new map, and it remains to be seen how the courts will rule through the continuing legal process. Depending upon the lawsuit’s subject matter, the Louisiana racial gerrymandering case before the US Supreme Court could have an effect upon future Missouri map rulings. Oral arguments for the Louisiana case are scheduled for Oct. 15, with a decision to come before the year ends.
The new Missouri map protects all six GOP incumbents, though most shed Republican voters in order to create a new western Republican 5th District. At the heart of the new plan is changing the Kansas City area to create a new Republican leaning seat instead of 11-term Rep. Emanuel Cleaver’s (D-Kansas City) urban downtown district.
To make the plan work for the GOP, the map drawers expanded the 4th District’s Jackson County share, including drawing the seat directly into Kansas City. Previously, the 4th contained part of Jackson County but none of Kansas City. The design then drives the new 5th CD into rural areas, while still keeping a large portion of Kansas City. The new draw then extends the seat east all the way past Jefferson City, meaning the 5th district’s eastern boundary is now closer to St. Louis than Kansas City.
The new partisan lean of 58.4R – 40.1D (Dave’s Redistricting App calculations) is quite different from the previous 5th’s 60.8D – 35.9R division. The difference is a net swing of 43.2 percentage points in the Republicans’ favor.
Though the new 5th District appears reliably Republican, Kansas City Mayor Quinton Lucas (D) indicated he might consider running for Congress there, believing the seat will still be competitive and assuming 80-year-old Rep. Cleaver does not seek re-election. The Mayor indicated he wants to ensure that “Kansas Citians … have a choice at the ballot box that represents Kansas City viewpoints and values.”
The 4th District alterations are also substantial. According to the Dave’s Redistricting App calculations, the new partisan lean is 59.9R – 38.7D. The previous 4th held a partisan break of 66.8R – 29.9D under the same projection formula, so we see a net change of almost 16 percentage points toward the Democratic line.
Rep. Mark Alford’s (R-Lake Winnebago) 4th is still strongly Republican, and the Congressman will be a clear favorite to win re-election, but he may have to wage a more active campaign than he would have from his original 4th CD.
The remaining six districts all keep their population cores though the partisan leans change in some cases.
The 1st District is again largely the city of St. Louis, but the partisan lean has been made just slightly more Democratic. In the 2021 map, the partisan division was projected at 77.1D – 20.4R. The new 1st carries a 77.9D – 20.3R break. Here, we are likely to see a Democratic primary re-match.
Earlier in the week, former Rep. Cori Bush, who lost renomination in 2024, said she will return to face now-Congressman Wesley Bell (D-St. Louis). Irrespective of who prevails in next year’s Aug. 4 Dem primary, the winner will claim the new 1st in the general election.
Another Republican redraw goal was to improve Rep. Ann Wagner’s (R-Ballwin) re-election prospects in her St. Louis suburban 2nd District by adding more Republican voters. According to the Dave’s Redistricting App calculations, the new partisan lean is 54.9R – 43.4D, which is a further cushion of about a point and a half for the seven-term incumbent.
The Republicans from District 3 (freshman Rep. Bob Onder) and 6 (Rep. Sam Graves) both see their respective districts become slightly more Democratic, but the two seats remain firmly in the GOP camp and neither incumbent will have trouble being re-elected.
The two southern Missouri congressional seats, District 7 (Rep. Eric Burlison) and 8 (Rep. Jason Smith), actually see their two safe Republican seats become even more so under the new plan.
Assuming the new map withstands the legal challenges, expect the Republicans to see a net gain of one seat in the Missouri delegation.