DemocratNo state or federal office heldWon the 2026 general by 11.1
Cat Clayton
Won the 2026 race for Missouri House District 105.
- Last margin
- +11.1
- Won 2026
Source: Wikidata, congress-legislators and Open States; 99chambers legislative records
Every race Clayton has run
Baseline: how the seat voted for president in the same or nearest year. Running ahead of it means Clayton won voters the party’s presidential nominee did not; primaries have no baseline.
| Year | Office | Stage | Result | Opponents | Share | Margin | Baseline | Against baseline |
|---|---|---|---|---|---|---|---|---|
| 2026 | Missouri House District 105 | General | Won | Colin Wellenkamp (R) | 55.6% | D+11.1 | D+1.1 |
Source: 99chambers results archive; 2026: civicAPI (unofficial)Updated Nov 8, 2026, 7:01 PM ET
Who Clayton has run against
- Colin Wellenkamp (R) · 2026 general, won
Source: 99chambers results archive; 2026: civicAPI (unofficial)
The seat
- Missouri House District 105 · lean D+1.4 · 54th most Democratic of 163
Source: 99chambers: presidential results on current lines (MEDSL precinct returns)