Arizona’s 4th Congressional District House Race 2026
Arizona’s 4th Congressional District, anchored in the West Valley suburbs of Phoenix including Surprise and Sun City, holds its 2026 House election this November. The seat has leaned Republican in recent cycles, but district lines and shifting suburban voter patterns keep it on the list of competitive contests. Candidates from both major parties are expected to campaign heavily on affordability, growth, and border-adjacent state issues.
Why Markets Are Watching
Control of the House often comes down to a handful of competitive districts like AZ-04, where suburban voters can swing between parties. The outcome affects not just local representation but the broader balance of power in Congress heading into the second half of the decade. Arizona’s growing and diversifying electorate makes this district a bellwether for Sun Belt political trends.
How Prediction Markets Frame the Race
The core question is simple: which party’s nominee wins AZ-04 in November. Markets isolate partisan control rather than vote-share margins, reducing a multi-candidate primary field into a binary outcome. Traders are effectively weighing candidate strength, turnout patterns, and national political mood as they filter into a single district-level verdict.
Related terms
Total Volume
$32.7k
Kalshi $13.9k · Polymarket $18.8k
Leading Market
Greg Stanton
Kalshi 96% · Polymarket 97%
Greg Stanton Volume
$19.6k
Kalshi $9.6k · Polymarket $10k
Greg Stanton 24h Change
-3.00%
Kalshi +0.60% · Polymarket -3.00%
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 |
|---|---|---|---|---|---|---|
| Greg StantonDemocratic Party | 96.8¢ | 7.0% | , trade Greg Stanton on Kalshi (opens in a new tab) | 97.0¢ | 5% | , trade Greg Stanton on Polymarket (opens in a new tab) |
| Zuhdi JasserRepublican Party | 4.4¢ | 7.0% | , trade Zuhdi Jasser on Kalshi (opens in a new tab) | 5.0¢ | 5% | , trade Zuhdi Jasser 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) |
|---|---|---|---|
| Greg StantonDemocratic Party | $19,605.88 | ||
| Zuhdi JasserRepublican Party | $13,084.33 |