Missouri
114 counties, a city in no county at all, 116 election authorities — and a congressional map still in court three months before the election.
Which congressional map does November run on?
State deltas
Every state has hair. Here is Missouri's.
The rules that make this state different from the last one, what each breaks if you assume the national default, and how the engine resolves it.
The 2025 special-session map runs 7–1 and the August primaries ran on it. The referendum against it gathered 305,000 signatures, was rejected by the Secretary of State on primary day, and the suit filed the next morning is before the state Supreme Court — a September ruling could suspend the map before November.
Both geometries stay loaded with valid-from dates and a live litigation flag. Results never join across map versions, whichever one November runs on.
St. Louis has been in no county since 1876 — it runs its own slate of 'county' offices and its own election board. Kansas City sits in four counties, and a citywide total must be assembled from four separate authorities.
City identity resolves statewide first. St. Louis City is modeled as county and city at once; Kansas City reassembles from four feeds before anything is served.
Most counties run elections through the clerk, but six bipartisan boards — St. Louis City, St. Louis County, Jackson, Kansas City, Clay, and Platte — publish on their own, and the Kansas City board covers only the city's Jackson County portion.
One harvester per authority, keyed to the authority. County and city rollups are computed downstream of the 116 feeds.
Counties are classed 1 through 4 by assessed valuation, and the class decides which offices exist: auditors in 1st and 2nd class, recorders who merge into circuit clerks in 3rd class — and five charter counties replaced the commission with executives and councils entirely.
The office slate is generated from class plus charter, and reconciled against the state Roster every cycle.
Every office traces to a statutory base year: clerk, recorder, collector, prosecutor, and presiding commissioner ride the midterm; sheriff, assessor, coroner, and the district commissioners ride the presidential. The treasurer splits by county class.
Cycle is derived from the statute's base year per office per county class, then verified against each county's actual filings.
The Missouri Plan — born here in 1940 — covers the appellate courts and exactly six circuits: St. Louis City and County, Jackson, Clay, Platte, and Greene. Judges there face yes/no retention votes. In the other 40 circuits, judges run in partisan primaries like any courthouse politician.
Contest type is a property of the circuit, not the state: retention records in six, partisan contests everywhere else.
School boards, city councils, and fire district boards elect on the first Tuesday after the first Monday in April, every year — nonpartisan, low-turnout, and invisible to a November-only model.
The April cycle is indexed as a first-class election with its own calendar, harvested through the same 116 authorities.
283 townships still govern roads in 20 mostly-northern counties under township organization. In the other 94, townships are lines on a map with no offices behind them — a township rung generated statewide invents governments.
The township rung exists only where the county adopted it — present by evidence, with trustee, clerk, and board indexed per township.
Federal to special district
What Missouri actually elects.
The seats run bottom-heavy here too — and in Missouri the bottom is 1,927 special districts electing fire, ambulance, and road boards most datasets have never heard of.
Congressional map
Where those seats are.
The 8 congressional districts in force for the 2026 cycle — not necessarily the map this delegation was elected under. Missouri enacted HB1, first used in 2026.
| District |
|---|
| MO-01 |
| MO-02 |
| MO-03 |
| MO-04 |
| MO-05 |
| MO-06 |
| MO-07 |
| MO-08 |
County ledger
One hundred sixteen feeds, six of them boards.
The state night feed aggregates, but the record is made by 116 authorities — and Kansas City alone takes four of them. Thirteen shown.
| County | Feed vehicle | Precincts | Contests | Status | Last read |
|---|---|---|---|---|---|
| St. Louis County | JSON feed | 692 | 47 | Verified | 4 hr |
| Kansas City · city board | Vendor app | 320 | 38 | Verified | 6 hr |
| St. Louis City | JSON feed | 226 | 34 | Verified | 4 hr |
| Jackson · non-KC board | Vendor app | 210 | 33 | Verified | 6 hr |
| St. Charles | JSON feed | 190 | 31 | Verified | 4 hr |
| Greene | County HTML | 165 | 30 | Verified | 7 hr |
| Clay · county board | Vendor app | 152 | 28 | Verified | 6 hr |
| Jefferson | PDF / SOVC | 132 | 27 | Sweeping | 9 hr |
| Boone | County HTML | 88 | 25 | Verified | 7 hr |
| Platte · county board | Vendor app | 78 | 23 | Verified | 6 hr |
| Cape Girardeau | PDF / SOVC | 52 | 19 | Verified | 9 hr |
| Mercer | Scan only | 8 | 9 | Journal entry | 13 hr |
| Worth | Scan only | 6 | 8 | Journal entry | 13 hr |