electionsmcp › races › Iowa State Senate District 30
Iowa State Senate District 30
The current officeholder, the 2024 result, and a precinct-level model you can run yourself — built from how Iowa actually voted.
Model Iowa State Senate District 30 →
Current officeholder
Doug Campbell Republican
2024 result
Republican R+22.7
2024 votes cast
33,034
Office
State Senate
Precinct results — 2024 general
44 precincts reported in Iowa State Senate District 30's 2024 general election. The twenty largest:
| Precinct | Winner | Margin | Votes |
|---|---|---|---|
| 19033-Mason City W-3 P-3 | Republican | R+3.9 | 1,634 |
| 19033-Mason City W-2 P-2 | Republican | R+1.3 | 1,509 |
| 19033-Clear Lake Ward 3 - | Republican | R+27.6 | 1,491 |
| 19033-Clear Lake Ward 1 - | Republican | R+31.5 | 1,487 |
| 19033-Clear Lake Ward 2 - | Republican | R+32.2 | 1,371 |
| 19195-Hartland Grove Northwood | Republican | R+39.8 | 1,329 |
| 19033-Mason City W-1 P-3 | Republican | R+6.5 | 1,322 |
| 19033-Clear Lake / Grant / Union Twps Pct | Republican | R+44.1 | 1,316 |
| 19033-Mason City W-4 P-3 | Republican | R+5.2 | 1,285 |
| 19033-Mason City W-1 P-2 | Republican | R+1.9 | 1,095 |
| 19033-Mason City W-3 P-1 | Democratic | D+2.4 | 1,059 |
| 19033-Mason City W-4 P-2 | Republican | R+7.8 | 1,024 |
| 19033-Mason City W-3 P-2 | Democratic | D+0.9 | 896 |
| 19131-Precinct #9 | Republican | R+39.9 | 868 |
| 19067-Rock Grove | Republican | R+28.6 | 852 |
| 19033-Mason City W-2 P-3 | Republican | R+3.5 | 841 |
| 19033-Mason City W-4 P-1 | Democratic | D+2.1 | 827 |
| 19195-Lincoln Manly | Republican | R+24.2 | 797 |
| 19033-Geneseo / Dougherty Twps Pct | Republican | R+34.9 | 790 |
| 19033-Mason South / Bath / Portland / Owen Twps Pct | Republican | R+35.5 | 729 |
All 44 precincts are modelable — open the race in the simulator and drill to precinct grain.
Find your district
Enter a ZIP code or a district (e.g. NC-4) to find your U.S. House district and who represents it.
Model Iowa State Senate District 30 in five steps
- Set the candidates. Name the contenders for the Iowa State Senate District 30 (or keep the generic Democrat / Republican defaults). The map starts from real 2024 results in every precinct.
- Apply a swing. Move vote share statewide, or by demographic cohort, with a slider. The map and the running tally recompute instantly.
- Model turnout. Mobilize or depress turnout for any group — turnout and persuasion are modeled separately, the way a real campaign thinks about them.
- Drill to precincts. Zoom from the state down to individual precincts and override any of them by hand.
- Roll up & share. Roll the result up to chamber control, then publish a shareable, frozen link to your scenario.
Open Iowa State Senate District 30 in the simulator →
Frequently asked
Who represents Iowa State Senate District 30?
Doug Campbell (Republican) currently holds this State Senate seat.
What was the 2024 result in Iowa State Senate District 30?
R+22.7 — 12,762 Democratic, 20,272 Republican, of 33,034 votes cast.
Can I model this race myself?
Yes — open it in the electionsmcp simulator and model vote-share swing and turnout from the real 2024 baseline, down to the precinct, then roll it up to chamber control.