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Updated September 23, 2026 · 296 live markets · refreshed twice a day
As of September 23, 2026 at 15:42 UTC, Polymarket lists 296 live 2026 Midterms markets with $1.25M traded in the last 24 hours. The most active is Balance of Power: 2026 Midterms (Democrats Sweep 65.5%), followed by Alaska Senate Election Winner (Mary Peltola 74.5%), Which party will win the House in 2026? (Democratic Party 92.5%).
The 2026 US midterm elections: control of the House and Senate and the key state races. Every live market on the topic is below, with the leading outcome's probability, its 24-hour change, trading volume and end date.
| Market | Leading outcome | 24h change | 24h volume | Ends |
|---|---|---|---|---|
| Balance of Power: 2026 Midterms | Democrats Sweep 65.5% | — | $130.8K | Jan 5, 2027 |
| Alaska Senate Election Winner | Mary Peltola 74.5% | -5.0 pts | $116.6K | Aug 1, 2027 |
| Which party will win the House in 2026? | Democratic Party 92.5% | — | $106.5K | Jan 5, 2027 |
| Michigan Senate Election Winner | Abdul El-Sayed (D) 71.5% | — | $91.8K | Nov 3, 2026 |
| Florida Governor Election Winner | Byron Donalds (R) 74.5% | -2.0 pts | $62.0K | Nov 3, 2026 |
| Which party will win the Senate in 2026? | Democratic Party 65.5% | — | $48.4K | Jan 5, 2027 |
| Texas Governor Election Winner | Greg Abbott (R) 72.5% | -6.5 pts | $46.4K | Nov 3, 2026 |
| Texas Senate Election Winner | James Talarico (D) 61.5% | — | $32.9K | Nov 3, 2026 |
| North Carolina Senate Election Winner | Roy Cooper (D) 94.5% | +2.0 pts | $30.3K | Nov 3, 2026 |
| Georgia Governor Election Winner | Keisha Lance Bottoms (D) 59.5% | -1.0 pts | $27.7K | Nov 3, 2026 |
| Maine Senate Election Winner | Troy Jackson (D) 73.5% | +1.0 pts | $26.4K | Nov 3, 2026 |
| Republican House odds hit __ by October 31? | ↓ 8% 86.5% | — | $22.6K | Nov 1, 2026 |
| Nebraska Senate Election Winner | Pete Ricketts (R) 67.5% | — | $22.0K | Nov 4, 2026 |
| Iowa Senate Election Winner | Ashley Hinson (R) 51.5% | +0.5 pts | $21.1K | Nov 3, 2026 |
| MO-05 House Election Winner | Emanuel Cleaver (D) 88.5% | -3.6 pts | $19.0K | Nov 5, 2026 |
| Ohio Senate Election Winner | Sherrod Brown (D) 62.5% | -0.5 pts | $18.6K | Nov 3, 2026 |
| Wisconsin Governor Election Winner | David Crowley (D) 84.5% | +1.0 pts | $18.5K | Nov 3, 2026 |
| Republican Senate odds hit __ by October 31? | ↓ 35% 89.6% | — | $18.4K | Nov 1, 2026 |
| South Carolina Senate Election Winner | Darline Graham Nordone (R) 86.5% | — | $16.9K | Nov 3, 2026 |
| CA-42 House Election Winner | Robert Garcia (D) 95.3% | +0.8 pts | $16.1K | Nov 4, 2026 |
| California Governor Election Winner | Xavier Becerra 95.2% | +0.4 pts | $15.3K | Nov 4, 2026 |
| NM-03 House Election Winner | Teresa Leger Fernández (D) 96.5% | +4.0 pts | $12.2K | Nov 4, 2026 |
| TX-23 House Election Winner | Brandon Herrera (R) 60.5% | -4.0 pts | $11.7K | Nov 4, 2026 |
| TX-35 House Election Winner | Johnny Garcia (D) 67% | +3.5 pts | $10.7K | Nov 5, 2026 |
| Georgia Senate Election Winner | Jon Ossoff (D) 94.5% | +1.0 pts | $8.9K | Nov 3, 2026 |
| OH-01 House Election Winner | Greg Landsman (D) 84.4% | +0.4 pts | $8.0K | Nov 5, 2026 |
| Republican Senate seats after the 2026 midterm elections? | ≤47 39.5% | +1.5 pts | $7.7K | Nov 3, 2026 |
| AR-02 House Election Winner | French Hill (R) 81.5% | -2.0 pts | $7.6K | Nov 4, 2026 |
| TN-04 House Election Winner | Scott DesJarlais (R) 92.5% | -1.5 pts | $6.8K | Nov 4, 2026 |
| Arizona Governor Election Winner | Katie Hobbs (D) 88.5% | — | $6.7K | Nov 3, 2026 |
| Montana Senate Election Winner | Kurt Alme (R) 90.5% | -1.0 pts | $5.6K | Nov 3, 2026 |
| CO-03 House Election Margin of Victory | Republican 3-6% 21.3% | +12.9 pts | $5.4K | Nov 4, 2026 |
| Iowa Governor Election Winner | Rob Sand (D) 82.5% | +0.5 pts | $5.4K | Nov 3, 2026 |
| Massachusetts Governor Election Winner | Maura Healey (D) 95.7% | -0.1 pts | $5.1K | Nov 3, 2026 |
| VA-03 House Election Margin of Victory | Democrat 45-50% 23.5% | -2.5 pts | $4.5K | Nov 4, 2026 |
| CT-01 House Election Margin of Victory | Democrat 30-35% 37% | +12.5 pts | $4.4K | Nov 4, 2026 |
| NY-14 House Election Margin of Victory | Democrat 45-50% 28.5% | +9.0 pts | $4.0K | Nov 4, 2026 |
| CA-40 House Election Winner (Individual) | Ken Calvert 56.5% | -9.5 pts | $3.7K | Nov 4, 2026 |
| NY-16 House Election Margin of Victory | Democrat 45-50% 26.9% | -1.9 pts | $3.6K | Nov 4, 2026 |
| SC-05 House Election Margin of Victory | Republican 15-20% 29.5% | +7.0 pts | $3.5K | Nov 4, 2026 |
256 smaller markets are not shown; all 296 are in the JSON data.
For multi-outcome markets the leading outcome is the one with the highest price; for yes/no markets it is the YES price. Prices are Polymarket share prices read as probabilities, not executable quotes.
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Trump (110) · 2028 Presidential Election (99) · Senate Races (128) · Governor Races (88) · House Races (100) · Supreme Court (32) · World Elections (168) · Brazil (100) · France (36) · Germany (22) · United Kingdom (22) · Canada (99)
As of September 23, 2026 at 15:42 UTC, Polymarket lists 296 live 2026 Midterms markets with $1.25M traded in the last 24 hours. The most active is Balance of Power: 2026 Midterms (Democrats Sweep 65.5%), followed by Alaska Senate Election Winner (Mary Peltola 74.5%), Which party will win the House in 2026? (Democratic Party 92.5%).
296 live markets as of September 23, 2026, not counting single games and markets that close within a few hours. The table lists them by 24-hour trading volume and refreshes twice a day.
From Polymarket's public market data. Each probability is the displayed price of an outcome's YES share, so 60¢ reads as roughly a 60% chance. Polymarket View is independent and not affiliated with Polymarket; nothing here is financial advice.
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<iframe src="https://polymarkettrader.com/embed/topic/midterms/" width="100%" height="280" style="border:0;max-width:560px" loading="lazy" title="2026 Midterms odds on Polymarket"></iframe> <p><a href="https://polymarkettrader.com/odds/midterms/">2026 Midterms odds</a> via <a href="https://polymarkettrader.com/">PolymarketTrader</a></p>
/api/v1/topics/midterms.json — every live market on the topic, CC BY 4.0 (credit “PolymarketTrader” with a link). See the developer docs.
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