Missouri House of Representatives seat · lines in effect since 2022
Missouri House District 105
A district of about 35,000 people, 41% of adults with a bachelor's degree. It votes D+1.4 relative to the nation for president.
Where it sits among all 163 seats
Every Missouri House of Representatives seat by partisan lean, from most Democratic to most Republican. Lean is the seat's presidential vote on current lines, relative to the nation.
Democratic
Source: 99chambers: 2024 and 2020 presidential results on current lines, relative to the nation (2024 weighted 3:1)Updated Oct 16, 2026, 5:19 AM ET
Every race on these lines
Results recomputed from precinct returns as if today's boundaries had always existed, so years compare like for like.
| 2022 | 2024 | 2026 | |
|---|---|---|---|
| Missouri House of Representatives | R+0.9 | R+5.8 | D+11.1 |
Outlined: the race for this seat itselfBlank: no race that year
Source: 99chambers results archive: precinct results allocated to current lines; 2026: civicAPIUpdated Nov 7, 2026, 3:01 PM ET
Who lives here, compared
Grey bars show the spread of all 163 seats. Small marks are other seats in Missouri. The black marker is District 105.
Higher than 76% of seats.
Lower than 64% of seats.
Higher than 77% of seats.
Higher than 69% of seats.
Higher than 89% of seats.
Denser than 87% of seats.
Source: Census Bureau, American Community Survey 2020–2024 5-year estimates, allocated to current linesUpdated Oct 13, 2026, 5:06 AM ET
Seats most like this one
Nearest seats on demographics, density and lean. 1 of the 4 flipped this year.
District 13639% college gradsD+1.1Held DDistrict 106
42% college gradsR+3.2Flipped DDistrict 14
48% college gradsD+9.6Held DDistrict 92
42% college gradsD+5.9Held D
Source: Census Bureau, American Community Survey 2020–2024 5-year estimates, allocated to current lines; 99chambers: 2024 and 2020 presidential results on current lines, relative to the nation (2024 weighted 3:1)Updated Oct 16, 2026, 5:19 AM ET
Who has held it
These lines took effect in 2022.
- Cat Clayton (D)
2027– · Won 2026 by 11.1 - Colin Wellenkamp (R)
2025–2027 · Won 2024 by 5.8 - Adam Schwadron (R)
2023–2025 · Won 2022 by 0.9
Source: Past results: 99chambers results archive (MEDSL, Klarner, state election offices)