Elections
2026 House Popular Vote: Margin of Victory
Voters nationwide will cast ballots in the 2026 midterm elections on November 3, deciding every seat in the U.S. House of Representatives. Beyond which party wins control, the aggregate national popular vote — the total votes cast for Democratic versus Republican House candidates — offers a broader read on the electorate’s mood. This margin has historically swung widely between cycles, shaped by the sitting president’s approval, turnout patterns, and local dynamics.
Why Markets Are Watching
Midterm elections typically serve as a referendum on the president and the party in power, and the popular vote margin reveals how deep that sentiment runs. A wide margin in either direction signals a potential wave election with consequences for redistricting, legislative agendas, and momentum heading into the 2028 presidential race. A narrow margin suggests a closely divided, polarized electorate.
How Prediction Markets Frame the Margin
Rather than asking only which party wins the House, this market isolates the size of the national vote gap, breaking outcomes into discrete bands from narrow single-digit splits to double-digit blowouts. That structure forces traders to weigh not just directional advantage but magnitude — distinguishing a modest edge from a landslide. It effectively turns a binary political contest into a graduated spectrum of possible electoral outcomes.
Related terms
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Democratic Party (United States) -
Republican Party (United States) -
Redistricting -
Voter turnout -
Wave elections in the United States -
Direct election -
United States presidential approval rating
Total Volume
$724.9k
Kalshi $73.3k · Polymarket $651.7k
Leading Market
Democrats, ≥2%
Kalshi 98%
Democrats, ≥2% Volume
$8.6k
Kalshi $8.6k
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Calculate Your Potential Return
| Market | Kalshi Yes | Kalshi Fee | Kalshi Payout | Polymarket Yes | Polymarket Fee | Polymarket Payout |
|---|---|---|---|---|---|---|
| Democrats, ≥2% | 98.0¢ | 7.0% | , trade Democrats, ≥2% on Kalshi (opens in a new tab) | — | — | — |
| Democrats, ≥4% | 98.0¢ | 7.0% | , trade Democrats, ≥4% on Kalshi (opens in a new tab) | — | — | — |
| Democrats, ≥6% | 91.0¢ | 7.0% | , trade Democrats, ≥6% on Kalshi (opens in a new tab) | — | — | — |
| Democrats, ≥7% | 83.0¢ | 7.0% | , trade Democrats, ≥7% on Kalshi (opens in a new tab) | — | — | — |
| Democrats, ≥8% | 74.0¢ | 7.0% | , trade Democrats, ≥8% on Kalshi (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) |
|---|---|---|---|
| Democrats, ≥2% | $8,630.13 | No market | |
| Democrats, ≥4% | $2,647.64 | No market | |
| Democrats, ≥6% | $10,453.29 | No market | |
| Democrats, ≥7% | $11.00 | No market | |
| Democrats, ≥8% | $22,061.16 | No market |