Primary
Democratic Primary
Held June 2, 2026.
| Candidate | Votes | % | |
|---|---|---|---|
| Sarah Trone Garriott ✓ | 54,651 | 100.0% |
Republican Primary
Held June 2, 2026.
| Candidate | Votes | % | |
|---|---|---|---|
| Zach Nunn ✓ | 48,302 | 100.0% |
Full calendar and every race: Iowa primary guide
Race Overview
General Election Polling Trend
Showing the published average. The rating above uses this figure.
PollingSource average — the last three qualifying polls of the locked matchup, or fewer (no polls in the last 30 days). This is an average, not a forecast.
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General Election Polling Average
No scientific polls in the last 30 days — the figure is the last three qualifying polls of the locked matchup, or fewer when fewer exist, not a 30-day mean. The table lists the polls in that average, plus the most recent 30 days or the newest 3 polls, whichever is more. How accurate is each pollster? →
| Pollster | Date | Sample | MoE | Dem | Rep |
|---|---|---|---|---|---|
| Ragnar Research Partners (R) | 2026-03-14 | 400 LV | ±5.00 | Sarah Trone Garriott 42.00% | Zach Nunn 48.00% |
Questions About This Race
Who is winning the 2026 IA-03 House race?
Zach Nunn leads Sarah Trone Garriott 48% to 42% in the PollingSource polling average — a R+6.0 margin based on the last three qualifying polls of the locked matchup, or fewer (no polls in the last 30 days).
Is the 2026 IA-03 House race competitive?
the expert consensus currently rates this race Tilt R.
What does the latest poll of the 2026 IA-03 House race say?
The most recent public poll, from Ragnar Research Partners (R) (completed March 14, 2026), found Sarah Trone Garriott (D) at 42% and Zach Nunn (R) at 48%.
When is the 2026 IA-03 House race decided?
Election Day is Tuesday, November 3, 2026.
How is the PollingSource average calculated?
The PollingSource average on this page is the last three qualifying scientific public polls of the locked matchup, or fewer — the newest of them is older than 30 days, so this is not a 30-day mean and it does not set the rating. We do not exclude pollsters. Full details: pollingsource.com/methodology.
Independent Expenditures Updated just now
Top Spenders
- HMP Dem-aligned $1,079,881
- NO GOING BACK PAC INC. GOP-aligned $699,552
- AMERICAN FEDERATION OF STATE COUNTY & MUNICIPAL EMPLOYEES P E O P L E Dem-aligned $604,500
- ELECT DEMOCRATIC WOMEN Dem-aligned $348,988
- NRDC ACTION VOTES Dem-aligned $300,000
- LCV VICTORY FUND Dem-aligned $250,060
- PROJECT 218 Dem-aligned $249,039
- AMERICA PAC GOP-aligned $162,393
- CFFE PAC Dem-aligned $113,766
- PROGRESSIVE TURNOUT PROJECT Dem-aligned $67,813
Full outside-spending research — every committee, every race →
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