Elections
Which Party Will Control the U.S. House After the 2026 Midterms
Control of the U.S. House of Representatives is up for grabs in the November 2026 midterm elections. All 435 seats are on the ballot, with Republicans defending their narrow majority against a Democratic Party seeking to flip the chamber. House control will shape the second half of the current presidential term.
Why Markets Are Watching
Midterm elections typically punish the president’s party, and history suggests Republicans face structural headwinds. Whichever party wins the House gains control over legislation, committee investigations, and budget fights for the remainder of the term. The outcome will also signal broader public sentiment heading into the next presidential cycle.
How Prediction Markets Frame the Race
This market reduces a sprawling, district-by-district election into a single binary question: which party ends up with a majority. Traders are effectively weighing national political trends, historical midterm patterns, and generic ballot sentiment against the incumbent party’s record. It isolates control of the chamber itself, rather than any individual race or seat count margin.
Related terms
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Democratic Party (United States) -
Republican Party (United States) -
United States House of Representatives -
United States Congress -
United States midterm election -
Presidential system
Total Volume
$299.9m
Kalshi $85.1m · Polymarket $214.8m
Leading Market
Democratic Party
Kalshi 93% · Polymarket 94%
Democratic Party Volume
$106.2m
Kalshi $25.1m · Polymarket $81.2m
Democratic Party 24h Change
+1.50%
Kalshi +1.50% · Polymarket +1.40%
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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 |
|---|---|---|---|---|---|---|
| Democratic Party | 93.5¢ | 7.0% | , trade Democratic Party on Kalshi (opens in a new tab) | 93.6¢ | 5% | , trade Democratic Party on Polymarket (opens in a new tab) |
| Republican Party | 6.6¢ | 7.0% | , trade Republican Party on Kalshi (opens in a new tab) | 6.6¢ | 5% | , trade Republican Party 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) |
|---|---|---|---|
| Democratic Party | $106,240,422.84 | ||
| Republican Party | $193,698,449.81 |