Election forecasts you can inspect.Tested models, shown with their sources and their uncertainty.

Updated October 22, 2026, 09:28 UTC

State legislatures › Iowa House

Iowa House District 37

2026 forecast · Updated October 22, 2026, 09:28 UTC

Decided: only a Republican is running · Jason Sandholdt (R)

Iowa House District 37: Decided: only a Republican is runningIowa House 21: chance of a Democratic win 3%; 2024 president R+24Iowa House 22: chance of a Democratic win 3%; 2024 president R+21Iowa House 24: chance of a Democratic win <1%; 2024 president R+49Iowa House 26: chance of a Democratic win <1%; 2024 president R+51Iowa House 38: chance of a Democratic win 19%; 2024 president R+25Iowa House 45: chance of a Democratic win 1%; 2024 president R+25Iowa House 88: chance of a Democratic win <1%; 2024 president R+50Iowa House District 37: Decided: only a Republican is running4522213888262437
Safe DLean DToss-upLean RSafe RHatched: not up in 2026 (shaded by holder) · dashed: other state

District 37 is safe Republican. Of its 7 neighbouring districts, 7 favour Republicans.

StatusDecided: only a Republican is running
CandidatesJason Sandholdt (R)
Candidate list fromofficial
Current memberBarb Kniff McCulla

How it has voted

On its current lines. Legislative contests and the top-of-ticket vote inside the district.

Legislature 2022R+49
Governor 2022R+53
Legislature 2024uncontested (R)
President 2024R+45
← RepublicanDemocratic →

Who lives here

Census Bureau, American Community Survey 2019-2023.

This districtIowa
Median household income$80,611$73,147
Bachelor's degree or more (25+)31%31%
Median age3939
White (not Hispanic)94%83%
Black1%4%
Hispanic2%7%
Asian1%2%
Born abroad2%6%
Jobs in manufacturing24%15%
Jobs in farming or mining4%4%

Initial version. This model was tested on every state legislative election from 1994 to 2024 before publication, forecasting each as if it had not happened. It beat the simple rule “the party that holds the seat keeps it”, and its chamber seat counts were off by 2.9 seats on average (target: under 3). Districts with no two-party race last time are read from their own presidential vote, a change tested in advance that cut their average error from 17 to 13 points. It missed one of its five accuracy targets: in 2024, the calmest year on record, its ranges were wider than they needed to be (92% of results fell inside its 80% ranges; target: at most 88%). Treat the ranges as cautious. The full test record and code.