CalledUnofficial results
Iowa House District 31
Iowa House of Representatives · Iowa
Mary Madison won re-election by 26.4 points over Kevin W. DuBay.
Mary MadisonDemocrat · winner · incumbent
63.1%9,986
Kevin W. DuBayRepublican
36.8%5,815
Write-inOther party
0.1%17
15,818 votes
Source: Iowa Secretary of State unofficial resultsUpdated Nov 7, 2026, 1:35 PM ET
Where the race moved
Against the 2024 presidential vote
The seat's recent races
Source: Past results: 99chambers results archive (MEDSL, Klarner, state election offices)
Money in this race
Each line compares the two campaigns on one scale.
Mary MadisonNo Republican
$7.1K
Raised by the campaign
—
$6.1K
Spent by the campaign
—
Campaign money: Iowa Ethics and Campaign Disclosure Board, through May 7, 2026.
Source: Iowa Ethics and Campaign Disclosure Board campaign filingsUpdated May 7, 2026
Pre-election forecast (final, Nov 3)
Our model's last run before Election Day, Nov 3, 2026. It no longer updates.
- Mary Madison
- >99%
- Kevin W. DuBay
- <1%
- Projected margin
- D+31.8
The candidates
Mary Madison (D)
Incumbent, Iowa House of Representatives, first elected 2022Kevin W. DuBay (R)
Incumbent, Iowa House of Representatives, first elected 2022Kevin W. DuBay (R)
Also on the ballot: Write-in (Other party), 0.1%