United States / 2026 Iowa Senate Republican primary
JMC Analytics (R)
Voting intention · fieldwork ended 28 May 2026
- Country
- 🇺🇸 United States
- Election
- 2026 Iowa Senate Republican primary
- Polling institute
- JMC Analytics (R)
- Published
- Not stated by the source
- Fieldwork
- 27 May 2026 – 28 May 2026
- Sample size
- 550
- Margin of error
- ±4.2 est. (Not published: estimated from sample size (95%, simple random sample))
- Methodology
- Not published
Results
JMC Analytics (R), 28 May 2026: Hinson (R) leads with 58.0%, 39.0 points ahead of Carlin (R).
- Ashley Hinson (R)58.0%new
- Jim Carlin (R)19.0%new
No earlier poll by this institute for this election, so no change is shown.
Note: The source states no publication date; dated by the end of fieldwork.
How to read a poll
- Sample size is how many people were asked. More people means less random error, never none.
- ±3 is the margin of error: the real figure is likely within 3 points either way of the one shown.
- Two polls can differ because they were taken on different dates, with different methods and different samples.
- est. means the institute did not publish a margin of error, so it is estimated from the sample size.
- The average smooths this out: it combines recent polls, so one unusual poll cannot swing the picture.