Iowa Senate 2026
Short Answer
1. Market Behavior & Drivers
- Since last update (~43d): The model's overall edge against the market widened by -4.1pp, shifting to -4.5.
- Ashley Hinson's model probability decreased 8.9pp; market fell 5.0pp, widening the edge as model-led.
- Josh Turek's model probability rose 8.9pp; market gained 5.0pp, with the edge also model-led.
- Ashley Hinson leads in prediction markets, reflecting Iowa's "deeply Republican" federal electorate.
- October polling averages show the race "exceptionally close," with Turek tied or slightly ahead.
Who Wins and Why
| Outcome | Market | Model | Why |
|---|---|---|---|
| Josh Turek | 42.0% | 45.5% | The race is a "Toss-up" with October polling averages effectively tied or showing him slightly ahead. |
| Ashley Hinson | 59.0% | 54.5% | Polling averages show the race as exceptionally close or slightly favor her opponent, despite market predictions. |
Current Context
Sources (9)
- 1Iowa Senate race tightens with less than two weeks to election daywowt.com
- 2Iowa U.S. Senate Election 2026: Latest Pollsnytimes.com
- 3United States Senate election in Iowa, 2026 - Ballotpediaballotpedia.org
- 4Iowa Senate race moves to tilt-R amid four Senate rating shifts — PoliAggpoliagg.com
- 52026 CPR Senate Race ratingscookpolitical.com
- 6Iowa Senate odds: Hinson leads Turek 56% to 44% after final debatenews.kalshi.com
- 7Iowa Senate Election Winnerpolymarket.com
- 8Iowa Senate Odds — Live Prediction Market Pricespredictionscout.com
- 9Iowa Senate chatbots end week split while markets favor Hinsonvotingmonitor.org
2. Price Chart
Historical Price (Probability)
3. Market Data
Contract Snapshot
This Kalshi market asks "Iowa Senate winner?" and resolves based on the winning party of the Iowa Senate general election.
1. YES resolution: A "Yes" contract for a specific candidate (e.g., Ashley Hinson) resolves to YES if that candidate officially wins the Iowa Senate general election. 2. NO resolution: A "No" contract for a specific candidate (e.g., Ashley Hinson) resolves to YES if that candidate does not win the Iowa Senate general election. 3. Key dates/deadlines: The Iowa Senate general election is scheduled for November 3, 2026. 4. Special settlement conditions: The market specifically states it "Resolves by winning party," meaning the determination of the winning candidate and their associated party will be the basis for resolution.
Available Contracts
Market options and current pricing
| Outcome bucket | Yes (price) | No (price) | Last trade probability |
|---|---|---|---|
| Ashley Hinson | $0.59 | $0.42 | 59% |
| Josh Turek | $0.42 | $0.59 | 42% |
Market Discussion
Traders in the Iowa Senate winner market currently favor Republican Ashley Hinson with a 58% probability, despite general polls showing a near-even race with Democrat Josh Turek. Arguments for Hinson include her substantial fundraising lead ($13.5M vs $6.3M) and Iowa's recent Republican presidential voting trends. Conversely, Turek demonstrates strong small-donor support (43%) and advocates for policies like tax relief, higher minimum wage, and expanded healthcare, with an associated market suggesting he might outperform current polling.
4. Trust Index
Includes the cost to trade: a $10,000 order loses about 3% of the price to slippage.
Weighted blend with hard caps — a critically weak safety pillar, or a severe trading anomaly, caps the total regardless of the rest. Full methodology · About the Trust Index
5. What are the distinct geographical and demographic paths to victory for Ashley Hinson and Josh Turek in Iowa?
| Turek's lead in YouGov poll | 47-46 [1][2][3] |
|---|---|
| Trump's 2024 vote in YouGov sample | 52-41 [1][2][3] |
| Iowa's federal electorate | Remains deeply Republican [4][5][6] |
Sources (9)
- 1Dem Senate Candidates Narrowly Lead in OH, TX, IAcookpolitical.com
- 2Midterm Elections in Iowa, September 2026 - Marist Pollmaristpoll.marist.edu
- 3Iowa Senate odds: Hinson leads Turek 56% to 44% after final debatenews.kalshi.com
- 4Ashley Hinson shows Republicans' midterm balancing act...washingtonpost.com
- 5Iowa Senate Odds 2026: Hinson Vs Turek Verdict | OddsShopperoddsshopper.com
- 6Hinson vs. Turek: Iowa Senate Odds and AI Prediction · Sikt Intelligencesiktintelligence.com
- 72026 Polls: Iowa Senate270towin.com
- 8Iowa U.S. Senate Election 2026: Latest Pollsnytimes.com
- 9Iowa Senate 2026 Polls — Turek vs Hinson — PoliAggpoliagg.com
6. What polling data and expert ratings from October 2026 underpin Ashley Hinson's status as the narrow favorite?
| Prediction Market Probability for Hinson | 58%-61% (Kalshi, October 22, 2026) [1] |
|---|---|
| PollingSource Average (Hinson vs Turek) | Hinson 46.3% to Turek 45.3% (R+1.0) [2] |
| Sikt's Model Win Probability for Hinson | 55% (October 21) [3] |
Sources (8)
- 1Iowa Senate Winner? 2026 Race Odds & Polls: Hinson vs. Turek | Kalshikalshi.com
- 2Iowa Senate Race 2026 | PollingSourcepollingsource.com
- 3Hinson vs. Turek: Iowa Senate Odds and AI Prediction · Sikt Intelligencesiktintelligence.com
- 42026 Iowa Senate - Hinson vs Turekrealclearpolling.com
- 5Iowa U.S. Senate Election 2026: Latest Pollsnytimes.com
- 62026 Iowa Senate Election: Polls & Odds | Prediction Edgepredictionedge.com
- 7Undecided Iowa voters are making up their minds in tight...yahoo.com
- 8Iowa Senate odds: Hinson leads Turek 56% to 44% after final debatenews.kalshi.com
7. Which potential late-game events could shift momentum between Hinson and Turek before the November 3 election?
| Time remaining in race | Final 12 days [1][2][3][4][5] |
|---|---|
| Turek's missed floor votes | 58% of Iowa House floor votes [2][6] |
| Hinson's Iran war votes | Seven votes [7][8][9] |
Sources (10)
- 1Iowa Senate race narrows as Turek leads Hinson by 2...kcci.com
- 2Iowa Senate race tightens with less than two weeks to...wowt.com
- 32026 Iowa Senate - Hinson vs Turekrealclearpolling.com
- 4Iowa U.S. Senate Election 2026: Latest Pollsnytimes.com
- 5Undecided Iowa voters are making up their minds in tight...newsweek.com
- 6Iowa's 2026 Senate race: What to know about Josh Turek...fox9.com
- 7Iowa Senate odds: Hinson leads Turek 56% to 44% after final debatenews.kalshi.com
- 8U.S. Senate candidates Hinson and Turek debate Iran war...iowapublicradio.org
- 9Hinson, Turek tangle in fierce final Iowa Senate debatethehill.com
- 10United States Senate election in Iowa, 2026ballotpedia.org
8. How does outside spending from PACs and other independent groups break down between Hinson and Turek in the final weeks?
| Total Independent Spending | $127.05 million (as of October 21, 2026) [1][2] |
|---|---|
| Independent Spending Benefiting Ashley Hinson | $69.21 million (54.5% of total independent spending) [1][2] |
| Projected Total Ad Spending | Approximately $195 million by Election Day [3][4][2] |
9. How do Ashley Hinson's and Josh Turek's platforms compare on key economic issues like inflation and healthcare?
| Inflation rate (January 2026) | 2.4% [1][2][3][4] |
|---|---|
| Proposed insulin cost cap | $25 per month [3][4] |
| Iowans potentially losing Medicaid coverage (Turek's claim) | 110,000 [3][4] |
Sources (5)
- 1Iowans are earning more, paying less after Trump's return - Ashley Hinson for Iowaashleyhinson.com
- 2Issues - Ashley Hinson for Iowaashleyhinson.com
- 3Pushing for Change | Josh Turek's Platformturek4iowa.com
- 4U.S. Senate - Josh Turek | Candidates in Eastern Iowa Electionsthegazette.com
- 52026 Iowa Senate race: Josh Turek (D) vs. Ashley Hinson (R)2026election.com
10. What Could Change the Odds
Key Catalysts
Key Dates & Catalysts
- Expiration: November 03, 2027
- Closes: November 03, 2027
Sources (11)
- 1Iowa Senate Winner? 2026 Race Odds & Pollskalshi.com
- 2https://polymarket.com/event/iowa-senate-election-winner?r=predictionhunteventspolymarket.com
- 3Iowa Senate 2026 Odds and Forecast | Nijinnmidterms.nijinn.io
- 4Iowa Senate odds: Hinson leads Turek 56% to 44% after final debatenews.kalshi.com
- 5Iowa, Kansas, Nebraska Senate Seats In Play, Traders Warydefirate.com
- 6Iowa 2026 polling average · Iowa Ledgeriowaledger.com
- 7YouGov finds Turek and Hinson a point apart in Iowa, and our estimate holds at 56% · 535535.wtf
- 8Iowa Senate 2026 — Odds & Model Forecast | Pollsscopes.com
- 9Three Year Election Calendar | Iowa Secretary of State - Paul D. Patesos.iowa.gov
- 10General Election | Iowa Secretary of State - Paul D. Patesos.iowa.gov
- 11Congressional Primary Dates and Candidate Filing Deadlines for Ballot Accessfec.gov