CalledUnofficial results
Iowa Senate District 13
Iowa State Senate · Iowa
Jeff Kulmatycki held the seat for Republicans, winning by 24.4 points over Brenda Case.
Staggered Senate
Jeff KulmatyckiRepublican · winner
62.1%13,311
Brenda CaseDemocrat
37.7%8,080
Write-inOther party
0.1%32
21,423 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.
Brenda CaseJeff Kulmatycki
$7.1K
Raised by the campaign
$11.2K
$4.2K
Spent by the campaign
$17K
Campaign money: Iowa Ethics and Campaign Disclosure Board, through May 13, 2026; Iowa Ethics and Campaign Disclosure Board, through Jun 29, 2026.
Source: Iowa Ethics and Campaign Disclosure Board campaign filingsUpdated May 13, 2026
Pre-election forecast (final, Nov 3)
Our model's last run before Election Day, Nov 3, 2026. It no longer updates.
- Brenda Case
- <1%
- Jeff Kulmatycki
- >99%
- Projected margin
- R+24.1