Washington’s 1st Congressional District: Who Wins the 2026 House Race
Washington’s 1st Congressional District, covering suburban and exurban communities east of Seattle, heads to the polls on November 3, 2026 to elect its U.S. House representative. The seat has leaned Democratic in recent cycles, but district boundaries and shifting suburban voter sentiment keep it on watch lists for competitive House contests. Party nominees will emerge from Washington’s primary before the general election matchup is set.
Why Markets Are Watching
Control of the U.S. House hinges on a small number of competitive districts, and WA-01 is among the seats both parties are tracking closely. The outcome will shape the district’s representation on issues like tech industry regulation, infrastructure funding, and trade policy affecting the Pacific Northwest. A shift here could signal broader suburban voting trends heading into the next Congress.
How Prediction Markets Frame the Race
The contract distills a multi-candidate race into a binary question: will the Democratic or Republican nominee win WA-01? That framing strips away campaign noise and focuses attention on turnout dynamics and candidate strength in a historically competitive suburban district. Traders are effectively weighing how national political winds and local campaign developments translate into a single district-level result.
Related terms
Total Volume
$47.1k
Kalshi $17.3k · Polymarket $29.8k
Leading Market
Suzan DelBene
Kalshi 98% · Polymarket 99%
Suzan DelBene Volume
$32k
Kalshi $15.9k · Polymarket $16.1k
Suzan DelBene 24h Change
-2.00%
Kalshi +1.00% · Polymarket -2.00%
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 |
|---|---|---|---|---|---|---|
| Suzan DelBeneDemocratic Party | 98.5¢ | 7.0% | , trade Suzan DelBene on Kalshi (opens in a new tab) | 99.0¢ | 5% | , trade Suzan DelBene on Polymarket (opens in a new tab) |
| Mary SalasRepublican Party | 2.7¢ | 7.0% | , trade Mary Salas on Kalshi (opens in a new tab) | 3.0¢ | 5% | , trade Mary Salas 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) |
|---|---|---|---|
| Suzan DelBeneDemocratic Party | $32,000.76 | ||
| Mary SalasRepublican Party | $15,050.10 |