Flipped from RepublicanCalledUnofficial resultsIncumbent defeated
Iowa House District 40
Iowa House of Representatives · Iowa
Heather Sievers flipped the seat for Democrats, winning by 8.8 points over Bill Gustoff.
Heather SieversDemocrat · winner
54.3%8,144
Bill GustoffRepublican · incumbent
45.6%6,830
Write-inOther party
0.1%19
14,993 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.
Heather SieversBill Gustoff
$92.7K
Raised by the campaign
$76K
$28.7K
Spent by the campaign
$41.1K
Campaign money: Iowa Ethics and Campaign Disclosure Board, through Jul 14, 2026; Iowa Ethics and Campaign Disclosure Board, through May 14, 2026.
Source: Iowa Ethics and Campaign Disclosure Board campaign filingsUpdated Jul 14, 2026
Pre-election forecast (final, Nov 3)
Our model's last run before Election Day, Nov 3, 2026. It no longer updates.
- Heather Sievers
- 59%
- Bill Gustoff
- 41%
- Projected margin
- D+1.6
The candidates
Heather Sievers (D)Bill Gustoff (R)
Incumbent, Iowa House of Representatives, first elected 2022
Incumbent, Iowa House of Representatives, first elected 2022
Also on the ballot: Write-in (Other party), 0.1%