Iowa Senate District 31
State Senate District 31
Covers part of Black Hawk County.
Who Holds This Seat
Running in 2026
Democrat · State Representative (IA-HD-61)
- Ballot
- On the 2026 ballot
- Last Change
- Profile updated · Oct 4
- Raised
- Not on file
- Cash on Hand
- Not on file
No finance filing on record.
The District
Includes Waterloo (part).
29 precincts · District lines: State senate lines: U.S. Census Bureau (1:500,000 cartographic boundary) · Precinct lines: Iowa Legislative Services Agency, Iowa Precincts (as of the 2022 reprecincting) statewide layer (services.arcgis.com/vPD5PVLI6sfkZ5E4 Iowa_Precincts); U.S. Census Bureau 2020 TIGER/Line VTDs where no official layer
Results in This District
| Contest | First | Second | Margin | Votes | Source |
|---|---|---|---|---|---|
| 2024 President29 precinctsIowa Secretary of StateCertified — Iowa county canvass results… | Kamala D. Harris and Tim Walz (D)13,992 · 55.3% | Donald J. Trump and JD Vance (R)10,884 · 43.0% | D+12.3 | 25,286 | Iowa Secretary of StateCertified — Iowa county canvass results… |
| 2022 U.S. Senate29 precinctsIowa Secretary of StateCertified — Iowa county canvass results… | Michael Franken (D)10,589 · 57.1% | Chuck Grassley (R)7,945 · 42.8% | D+14.2 | 18,556 | Iowa Secretary of StateCertified — Iowa county canvass results… |
| 2022 Governor29 precinctsIowa Secretary of StateCertified — Iowa county canvass results… | Deidre DeJear and Eric Van Lancker (D)9,592 · 51.8% | Kim Reynolds and Adam Gregg (R)8,381 · 45.2% | D+6.5 | 18,529 | Iowa Secretary of StateCertified — Iowa county canvass results… |
Totals add up the certified precinct results for the precincts inside today's district lines where they are linked, and otherwise for the precincts that voted in this seat's own race. A precinct split by the district line counts in full, or only in the district holding most of its voters where the linkage assigns it to one, and votes a county reported only countywide (some counties' absentee and early votes) are left out, so totals can differ from an official canvass.
Past Results
State Senator District 31
Iowa General Election 2022-11-08 · Nov 8, 2022| Candidate | Party | Votes | Share |
|---|---|---|---|
| Bill DotzlerDemocrat | Democrat | 13,282 | 96.9% |
| Write-in | 420 | 3.1% |
Certified — Iowa county canvass results as published by the Iowa Secretary of State (Clarity ENR final county uploads; county totals reconcile exactly to the State Board of Canvassers canvass summary) · Iowa Secretary of State — Election Night Reporting / Precinct Results by County