Missouri House of Representatives seat · lines in effect since 2022
Missouri House District 20
A district of about 39,000 people, 25% of adults with a bachelor's degree. It votes R+15.2 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+16.3 | R+18.8 | D+2.8 |
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 20.
Lower than 58% of seats.
Higher than 53% of seats.
Higher than 80% of seats.
Higher than 76% of seats.
Lower than 59% of seats.
Less dense than 51% 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.
District 5633% college gradsR+14.1CountingDistrict 33
33% college gradsR+20.6Held RDistrict 11
25% college gradsR+29.3Held RDistrict 10
21% college gradsR+13.8Held R
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.
- Mike Steinmeyer (R)
2025– · Won 2024 by 18.8 - Aaron McMullen (R)
2023–2025 · Won 2022 by 16.3
Source: Past results: 99chambers results archive (MEDSL, Klarner, state election offices)