Primary
Democratic Primary
Held August 4, 2026.
| Candidate | Votes | % | |
|---|---|---|---|
| Bethany E Mann ✓ | 39,279 | 69.1% | |
| Tommy Holstein | 10,049 | 17.7% | |
| Paul T. Wilson | 7,519 | 13.2% |
Republican Primary
Held August 4, 2026.
| Candidate | Votes | % | |
|---|---|---|---|
| Bob Onder ✓ | 66,668 | 66.3% | |
| John G Fraser | 33,853 | 33.7% |
Full calendar and every race: Missouri primary guide
Race Overview
Candidates
Average reflects all polls from the last 30 days; table shows the most recent 30 days or the newest 3 polls, whichever is more. How accurate is each pollster? →
No polls in the last 90 days.
Questions About This Race
Is the 2026 MO-03 House race competitive?
No — the expert consensus rates it Safe R for Republicans.
When is the 2026 MO-03 House race decided?
Election Day is Tuesday, November 3, 2026.
How is the PollingSource average calculated?
The PollingSource average is the unweighted mean of every scientific public poll of the race from the last 30 days — we do not exclude pollsters. Each race page lists the individual polls behind the average with pollster, field dates, sample size, and margin of error. Full details: pollingsource.com/methodology.
Race Notes
Replaced Blaine Luetkemeyer who retired
Race News
No news coverage yet for this race.