Missouri State Senate seat · lines in effect since 2022
Missouri Senate District 20
A district of about 202,000 people, 31% of adults with a bachelor's degree. It votes R+48.4 relative to the nation for president.
Where it sits among all 34 seats
Every Missouri State Senate 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.
| 2018 | 2026 | |
|---|---|---|
| U.S. Senate | R+37.2 | No race |
| Missouri State Senate | No race | R+34.8 |
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 34 seats. Small marks are other seats in Missouri. The black marker is District 20.
Higher than 61% of seats.
Higher than 52% of seats.
Lower than 64% of seats.
Lower than 91% of seats.
Higher than 55% of seats.
Less dense than 58% 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 629% college gradsR+49.3Held RDistrict 10
25% college gradsR+46.2Held RDistrict 31
28% college gradsR+37.0Not up in 2026District 27
25% college gradsR+55.9Not up in 2026
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.
- Lori Rook (R)
2027– · Won 2026 by 34.8 - Curtis Trent (R)
2023–2027 · Won 2022 unopposed
Source: Past results: 99chambers results archive (MEDSL, Klarner, state election offices)