Cash
Portfolio
TrendingMidtermsElectionsPoliticsSportsCultureCryptoCommoditiesClimateEconomicsMentionsFinanceTech & Science
PredictLive102AccountSocial
MARKETSPERPSLIVE102
Product
Kalshi ProPerpetual FuturesMarketsIncentive programInstitutionsAPI & developers
Company
AboutKalshi ResearchBlogCareersPolicy CenterBrand Kit
Help
Help CenterFAQFee scheduleTrading hoursRegulatoryTrust Center
© 2026 Kalshi Inc. · All rights reserved
PrivacyData Terms of ServiceTrading ProhibitionsFAQ for Finance Professionals
Trading on Kalshi involves risk and may not be appropriate for all. Members risk losing their cost to enter any transaction, including fees. You should carefully consider whether trading on Kalshi is appropriate for you in light of your investment experience and financial resources. Any trading decisions you make are solely your responsibility and at your own risk. Information is provided for convenience only on an "AS IS" basis. Past performance is not necessarily indicative of future results. Kalshi is subject to U.S. regulatory oversight by the CFTC.
Series Image
  1. House

IA-03 House winner?

Resolves by winning party
Chance
Sarah Trone Garriott
Democratic party
79%
▼ 2

Sarah Trone Garriott

Democratic party
79%
▼ 2
Zach Nunn
Republican party
21%
▲ 2

Zach Nunn

Republican party
21%
▲ 2
People are also trading
Series Image
Iowa Attorney General winner?
Series Image
Iowa's 3rd District margin of victory
Series Image
Iowa 03 House General Election: voter turnout
Series Image
IA-01 House winner?
Series Image
Iowa State Senate winner?
Series Image
Iowa State Auditor winner?
Series Image
Iowa Blue Wave Combo
Series Image
Iowa Governor-Senate combo
Series Image
Iowa: Sand's margin vs. Turek's margin?
Series Image
Iowa Secretary of Agriculture winner?

More Iowa and 2026 Midterm Races

More Iowa races

Iowa Senate race: Hinson vs. TurekIowa Governor race: Sand vs. LahnIA-01 House race

Control of Congress

Which party will win the Senate?Which party will win the House?Congress balance of power

Top races

Texas Senate race: Talarico vs. PaxtonMaine Senate race: Jackson vs. CollinsMichigan Senate race: El-Sayed vs. RogersOhio Senate race: Brown vs. HustedNew York Governor race: Hochul vs. BlakemanKansas Senate race: Marshall vs. HamiltonSouth Carolina Senate race: Graham vs. AndrewsFlorida Governor race: Donalds vs. JollyNorth Carolina Senate race: Cooper vs. WhatleyOhio Governor race: Acton vs. Ramaswamy

More races

Wyoming Senate race: Hageman vs. ByrdIllinois Senate race: Stratton vs. TracyAlabama Senate race: Moore vs. WessOregon Senate race: Merkley vs. SmithHawaii Governor race: Green vs. CorderySouth Dakota Governor race: Rhoden vs. AhlersWyoming Governor race: Barlow vs. CasnerIdaho Governor race: Little vs. PickensArkansas Governor race: Sanders vs. LoveTexas Governor race: Abbott vs. Hinojosa
IA-03 House winner?

Sarah Trone Garriott

Odds
82% chance
Max payout
Nov 3, 2027
$0
Garriott
Nov 3 ·D +5.5margin forecast
Nunn
$100,080 vol
Race Intel

IA-03 House Race 2026

ElectionNov 3, 2026General election
IncumbentZachary Nunn (R)Running for re-election

IA-03 House Candidates and Fundraising

CandidatePollsRaisedSmall Donors
  • Zach NunnR47.0%
    47.0%
    $4.9M
    2.9%
    $4.9M raised·2.9% small donors
  • Sarah Trone GarriottD43.0%
    43.0%
    $7.7M
    17%
    $7.7M raised·17% small donors

Garriott vs. Nunn Polls vs. Kalshi Odds

Polling averageNunn +4.047.0% vs. 43.0%
Kalshi oddsGarriott 79%Nunn 21% · $85.8K traded
Polling averages · Fundraising: FEC filings · Small-donor ≤ $200. This does not include third party expenditures.

Past IA-03 Election Results

Past presidential elections

2024R +4.4%2020R +0.3%