As of October 24, 2026, 06:27 PM ET, Polymarket traders price 10-12 at 93.7% in How many Democratic House Incumbents will not win their Primary? — $71.0K traded so far.
The leading outcome, 10-12, is priced at 93.7%.
Price changes for the leading market — 24 hours: +8.0 pts; past week: -0.4 pts; past month: -0.2 pts.
Since January 14, 2026, 10-12 has traded between 3.1% and 96.6%. It opened at 23.0% and last traded at 93.7%.
| Day | Close |
|---|---|
| Oct 16, 2026 | 94.3% |
| Oct 18, 2026 | 89.2% |
| Oct 19, 2026 | 91.6% |
| Oct 20, 2026 | 94.8% |
| Oct 22, 2026 | 93.2% |
| Oct 23, 2026 | 85.9% |
| Oct 24, 2026 | 93.7% |
10-12 is favored at 93.7%.
| Outcome | Price | Implied probability | 24h change | Volume | Volume share |
|---|---|---|---|---|---|
| 10-12 | 94¢ | 93.7% | +8.0 pts | $24.7K | 34.8% |
| 13-15 | 6¢ | 6.2% | -3.5 pts | $9.3K | 13.0% |
See the full live book for this market on Polymarket
The leading market's spread is 1¢ (bid 93¢ / ask 94¢) — a tighter spread means cheaper round-trip trading.
$71.0K has been traded on this event in total, $1.4K of it in the last 24 hours, across 2 markets.
Polymarket lists no fixed end date for this market.
The 2026 midterm elections are scheduled to be held on November 3, 2026, with congressional primaries running from March through September. This market will resolve according to the number of Democratic House incumbents who do not win their nominating election to move on to the general election as a result of the 2026 midterm primary elections. An incumbent will be considered not to have won their election if they are not declared the winner of the election they sought, including if they withdraw, suspend, or otherwise leave the race at any point after officially registering as a candidate, regardless of the reason. Incumbents who do not officially register as candidates for reelection will not be considered. This market will resolve based on the results of all House nominating elections, including party primaries, top-two or jungle primaries, and primaries for special elections, that are scheduled to occur between March 1 and September 30, 2026. If a required runoff for any such election or a subsequent qualifying round in a non-partisan primary system could change the market’s outcome, the market will remain open until that contest is conclusively called by this market’s resolution sources. A candidate's party will be determined by their ballot-listed or otherwise identifiable affiliation with that party at the time of their nominating election. … (condensed)
The largest current holder of the leading market holds 2,906 shares of No.
| Holder | Outcome held | Shares | Value at current price |
|---|---|---|---|
| 0xa5ef39c3… | No | 2,906 | $185 |
| Demanding-City | Yes | 1,350 | $1.3K |
| Infatuated-Treasury | Yes | 1,310 | $1.2K |
| Belated-Glue | No | 930 | $59 |
| Wan-Gymnastics | Yes | 694 | $650 |
| Tremendous-Divide | No | 500 | $32 |
| Automatic-Cappuccino | Yes | 500 | $468 |
| Accomplished-Property | Yes | 232 | $217 |
| Rapid-Cartel | Yes | 213 | $199 |
| Known-Use | Yes | 176 | $165 |
| Time | Outcome | Side | Price | Size |
|---|---|---|---|---|
| Oct 24, 04:34 PM ET | No | SELL | 5.8% | $0 |
| Oct 24, 06:12 AM ET | Yes | SELL | 92.1% | $1 |
| Oct 24, 06:12 AM ET | Yes | SELL | 5.2% | $0 |
| Oct 24, 05:10 AM ET | No | BUY | 94.9% | $19 |
| Oct 24, 05:07 AM ET | Yes | SELL | 4.6% | $0 |
| Oct 24, 05:06 AM ET | Yes | BUY | 93.0% | $32 |
| Oct 24, 05:05 AM ET | No | SELL | 7.0% | $0 |
| Oct 24, 05:05 AM ET | No | BUY | 94.5% | $19 |
| Oct 24, 05:05 AM ET | Yes | SELL | 92.9% | $17 |
| Oct 24, 05:05 AM ET | Yes | SELL | 6.0% | $1 |
As of October 24, 2026, 06:19 PM ET, the leading outcome is 10-12 at 93.7%. Next is 13-15 at 6.2%. See the live book on Polymarket: https://polymarket.com/event/how-many-democratic-house-incumbents-will-not-win-their-primary?via=bro
$71.0K in total volume, with $1.4K traded in the last 24 hours across 2 markets.
10-12, priced at 93.7% as of October 24, 2026, 06:19 PM ET. Prices are implied probabilities backed by real-money trading.
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