How Many House Seats Will Democrats Win in Arizona in 2026?
Arizona’s nine U.S. House seats are up for election on November 3, 2026, with Democrats defending several competitive districts alongside safer urban and suburban seats. The state’s current delegation is closely split, and redistricting-driven boundaries plus statewide political trends will shape how many seats each party holds after the midterms. Control of swing districts in the Phoenix metro area and along the state’s border regions will largely determine the outcome.
Why Markets Are Watching
Arizona is a perennial battleground whose House results help signal broader midterm momentum nationally. A shift in even one or two seats could affect the overall partisan balance of the chamber, given how narrowly it’s often divided. The state’s mix of suburban swing voters, border policy concerns, and growing population makes it a bellwether for competitive House races elsewhere.
How Prediction Markets Frame the Outcome
This market isolates a specific numerical threshold rather than simply asking which party wins control statewide. Traders are effectively weighing district-by-district competitiveness to estimate a precise seat count for Democrats, rather than a binary win-or-lose outcome. That turns a broad electoral contest into a narrower, quantifiable question about how many of Arizona’s nine seats land in the Democratic column.
Related terms
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Democratic Party (United States) -
Electoral district -
Arizona -
Swing state -
Phoenix, Arizona -
Mexico–United States border -
Swing (politics) -
Redistricting in Arizona
Total Volume
$34.3k
Kalshi $27.9k · Polymarket $6.3k
Leading Market
5
Kalshi 50% · Polymarket 49%
5 Volume
$4.9k
Kalshi $4.3k · Polymarket $602.89
5 24h Change
-15.00%
Kalshi -4.00% · Polymarket -15.00%
Calculate Your Potential Return
- Kalshi(opens in a new tab) 7.0% fee
- Polymarket(opens in a new tab) 5.0% fee
| Market | Kalshi Yes | Kalshi Fee | Kalshi Payout | Polymarket Yes | Polymarket Fee | Polymarket Payout |
|---|---|---|---|---|---|---|
| 5 | 51.0¢ | 7.0% | , trade 5 on Kalshi (opens in a new tab) | 49.0¢ | 5% | , trade 5 on Polymarket (opens in a new tab) |
| 6 | 31.0¢ | 7.0% | , trade 6 on Kalshi (opens in a new tab) | 27.0¢ | 5% | , trade 6 on Polymarket (opens in a new tab) |
| 4 | 12.0¢ | 7.0% | , trade 4 on Kalshi (opens in a new tab) | 6.0¢ | 5% | , trade 4 on Polymarket (opens in a new tab) |
| Above 6 | 7.0¢ | 7.0% | , trade Above 6 on Kalshi (opens in a new tab) | — | — | — |
| 3 | 3.0¢ | 7.0% | , trade 3 on Kalshi (opens in a new tab) | 4.0¢ | 5% | , trade 3 on Polymarket (opens in a new tab) |
* Estimates if candidate wins. Actual returns may vary.
All Markets
| Market | Total Volume | Kalshi(opens in a new tab) | Polymarket(opens in a new tab) |
|---|---|---|---|
| 5 | $4,920.37 | ||
| 6 | $2,366.02 | ||
| 4 | $5,770.79 | ||
| Above 6 | $4,028.15 | No market | |
| 3 | $9,640.40 |