Iowa Senate District 18
State Senate District 18
Covers part of Polk County.
Who Holds This Seat
Running in 2026
No 2026 candidates are on file for this seat yet.
The District
Includes Des Moines (part).
21 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; Iowa Legislative Services Agency precincts (2016 file) for the 2020 general
Results in This District
| Contest | First | Second | Margin | Votes | Source |
|---|---|---|---|---|---|
| 2024 President21 precinctsIowa Secretary of StateCertified — Iowa county canvass results… | Kamala D. Harris and Tim Walz (D)24,380 · 71.6% | Donald J. Trump and JD Vance (R)9,061 · 26.6% | D+45.0 | 34,040 | Iowa Secretary of StateCertified — Iowa county canvass results… |
| 2022 U.S. Senate21 precinctsIowa Secretary of StateCertified — Iowa county canvass results… | Michael Franken (D)20,208 · 74.3% | Chuck Grassley (R)6,920 · 25.5% | D+48.9 | 27,182 | Iowa Secretary of StateCertified — Iowa county canvass results… |
| 2022 Governor21 precinctsIowa Secretary of StateCertified — Iowa county canvass results… | Deidre DeJear and Eric Van Lancker (D)19,360 · 71.3% | Kim Reynolds and Adam Gregg (R)7,076 · 26.1% | D+45.3 | 27,145 | Iowa Secretary of StateCertified — Iowa county canvass results… |
| 2020 President25 precinctsIowa Secretary of StateCertified — Iowa county canvass results… | Joseph R. Biden and Kamala D. Harris (D)26,034 · 71.8% | Donald J. Trump and Michael R. Pence (R)9,414 · 26.0% | D+45.9 | 36,245 | Iowa Secretary of StateCertified — Iowa county canvass results… |
| 2020 U.S. Senate25 precinctsIowa Secretary of StateCertified — Iowa county canvass results… | Theresa Greenfield (D)25,320 · 70.4% | Joni Ernst (R)9,661 · 26.9% | D+43.6 | 35,943 | Iowa Secretary of StateCertified — Iowa county canvass results… |
Totals add up the certified precinct results for the precincts inside today's district lines. 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 18
Iowa General Election 2024-11-05 · Nov 5, 2024| Candidate | Party | Votes | Share |
|---|---|---|---|
| Janet PetersenDemocrat | Democrat | 25,564 | 97.1% |
| Write-in | 766 | 2.9% |
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
State Senator District 18
Iowa General Election 2020-11-03 · Nov 3, 2020| Candidate | Party | Votes | Share |
|---|---|---|---|
| Janet PetersenDemocrat | Democrat | 20,696 | 97.3% |
| Write-in | 565 | 2.7% |
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