Iowa State Senate seat · lines in effect since 2022
Iowa Senate District 33
A district of about 67,000 people, 25% of adults with a bachelor's degree. It votes R+27.5 relative to the nation for president.
Where it sits among all 50 seats
Every Iowa 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.
| 2022 | 2026 | |
|---|---|---|
| Iowa State Senate | R+31.7 | R+19.4 |
Outlined: the race for this seat itselfBlank: no race that year
Source: 99chambers results archive: precinct results allocated to current lines; 2026: Iowa Secretary of StateUpdated Nov 7, 2026, 3:01 PM ET
Who lives here, compared
Grey bars show the spread of all 50 seats. Small marks are other seats in Iowa. The black marker is District 33.
Lower than 59% of seats.
Higher than 92% of seats.
Lower than 84% of seats.
Lower than 76% of seats.
Lower than 92% of seats.
Less dense than 61% 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 2926% college gradsR+29.4Held RDistrict 34
22% college gradsR+30.6Not up in 2026District 32
23% college gradsR+25.4Not up in 2026District 19
25% college gradsR+34.6Held 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.
- Carrie Koelker (R)
2023– · Won 2022 by 31.7, 2026 by 19.4
Source: Past results: 99chambers results archive (MEDSL, Klarner, state election offices)