Iowa State Senate District 20
Competitive — shifted 5.4pp toward Republicans in 2024 — 64K residents
Iowa State Senate District 20 is a state senate district that has a population of 64,031. In the 2024 presidential election, it voted Republican with a margin of R+4.5. Akashic Edge tracks 5 presidential elections here, dating back to 2008.
| Year | Dem % | Rep % | Margin | Swing |
|---|---|---|---|---|
| 2024 | 46.9% | 51.4% | R+4.5 | R+5.4 |
| 2020* | 49.4% | 48.4% | D+0.9 | D+1.8 |
| 2016* | 45.6% | 46.5% | R+0.8 | R+15.9 |
| 2012* | 57.5% | 42.5% | D+15.1 | D+4.0 |
| 2008* | 54.5% | 43.4% | D+11.1 | — |
* Pre-2022 results projected onto current district boundaries. Actual boundaries at the time of the election may have differed.
What defines IA-SD-20?
IA-SD-20 has flipped between parties in each of the last three elections — a fiercely contested battleground. It has a working-class, predominantly white electorate — strong Republican base territory.
Similar state senate districts
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Key Insights
- The 2016 election was decided by just 0.8 points — razor-thin
- Won by both parties in recent history — Democrats most recently in 2020, Republicans in 2024
- Turnout increased by 4.8 percentage points since the previous presidential election
Who Lives Here
| Group | IA-SD-20 | State | National |
|---|---|---|---|
White (Non-Hispanic) | 78.5% | 82.3% | 57.4% |
Hispanic / Latino | 8.1% | 7.3% | 19.3% |
Black / African American | 5.9% | 3.9% | 12.2% |
Multiracial / Other | 4.0% | 3.5% | 4.0% |
Asian | 3.0% | 2.5% | 6.0% |
Native American / Alaska Native | 0.4% | 0.4% | 0.9% |
Native Hawaiian / Pacific Islander | 0.1% | 0.2% | 0.2% |
Who lives in Iowa State Senate District 20? 64,031 residents as of the 2020 Census.
Demographics
Scale, voting-age share, and this geography's footprint inside the national electorate.
Income, attainment, and ownership indicators that often shape coalition structure and turnout behavior.
Age structure, language use, and nativity signals that explain how this geography differs from state and nation.
Turnout in IA-SD-20
How competitive is IA-SD-20?
Other Iowa State Senate Districts
49 total| Name | Margin ↓ |
|---|---|
| IA-SD-45 | D+52.4 |
| IA-SD-18 | D+45.0 |
| IA-SD-43 | D+38.3 |
| IA-SD-17 | D+35.8 |
| IA-SD-25 | D+27.3 |
| IA-SD-39 | D+22.5 |
| IA-SD-16 | D+17.3 |
| IA-SD-15 | D+16.8 |
| IA-SD-40 | D+12.6 |
| IA-SD-31 | D+12.3 |
| IA-SD-37 | D+11.3 |
| IA-SD-49 | D+8.7 |
| IA-SD-22 | D+6.8 |
| IA-SD-36 | D+3.0 |
| IA-SD-14 | R+0.3 |
| IA-SD-21 | R+2.1 |
| IA-SD-38 | R+5.2 |
| IA-SD-47 | R+8.0 |
| IA-SD-10 | R+8.4 |
| IA-SD-41 | R+11.3 |
| IA-SD-01 | R+11.4 |
| IA-SD-46 | R+14.2 |
| IA-SD-26 | R+15.6 |
| IA-SD-23 | R+16.4 |
| IA-SD-50 | R+17.5 |