As of Oct 22, 2026, 1:33 PM ET, Polymarket priced this market at 4.1% (down from 10.6% 24 hours earlier). It had $79.2K traded in the past 24 hours, $103.8K of order-book liquidity and a bid-ask spread of 0.8 pts. probcast.co rates the support behind this price as strong.
Deep, easy-to-trade market — and today's move was spread across many accounts.
Source: Polymarket price history
Is the move backed by real trading and depth?
The pricing is supported by healthy trading volume and market depth, a tight spread.
Has the market settled at the new probability?
Movement has slowed (6.5 points over six hours) but the market has not fully settled.
Will the rules resolve without ambiguity?
The resolution rules are relatively specific, with a named source and a defined deadline.
Two different questions: how hard the price is to move, and whose trading set it.
How hard is it to move this price?
Order-book liquidity
$103.8K
Bid-ask spread
0.8 pts
24h volume
$79.2K
Total volume
$109.1K
It would take roughly $1.4K of buying to move the price up by ~5 pts.
Lots of money on the book and a tight spread — a single ordinary order can't move this price much.
Whose opinion is this price?
Accounts
65
Trades
200
over 11 days
Largest order
$772
$5.8K traded across these 200 trades (last 11 days).
Many independent accounts traded — the price reflects a crowd, not one trader.
From the latest trade tape (most recent 200 prints) — a live activity sample, not a lifetime total.
This market will resolve according to the winner of the 2026 midterm Idaho U.S. Senate election, inclusive of any run-offs.
This summary shows the opening of the venue's official rules. ProbCast has not yet generated an independent plain-English interpretation for this contract — review the full rules before relying on it.
This market will resolve according to the winner of the 2026 midterm Idaho U.S. Senate election, inclusive of any run-offs. A candidate shall be considered to represent a party in the event that he or she is the nominee of the party in question. Candidates other than the Democratic or Republican nominee (e.g., Greens, Libertarian, independent) may be added at a later date. Candidates who run as independents will not be encompassed by the “Democrat” or “Republican” options regardless of any affiliation they may have with the party. The candidates may be named in the contract for the convenience of traders. In the event that any named candidate is replaced as the nominee of their respective party prior to election day, the name in the contract will be updated and the market will resolve based on the replacement nominee of the party. The resolution source for this market is the Associated Press, Fox News, and NBC. This market will resolve once all three sources call the race for the same candidate. If all three sources haven’t called the race in this state for the same candidate, this market will resolve based on the official certification.
The probability fell 6.5 percentage points over the last 24 hours (10.6% → 4.1%).
No verified catalyst has been linked to this move yet. ProbCast does not attribute moves to news without evidence connecting the timing of a specific report to the repricing.
The contract must resolve based on what has happened by this date.
Derived from the contract's own mechanics as of Oct 22, 1:43 PM ET. ProbCast does not list scheduled meetings, announcements, or data releases it cannot verify.
Research signals — these models are still accumulating the history needed for full validation, and they can disagree with the headline read. Model confidence: medium · expected error ±16 pts.
The price is actively repricing on real volume. The number is still moving — don't treat the latest print as settled consensus yet.
The latest price is a usable but caveated read — weigh it with the market state.
Short-term motion of the price line (~1h), distinct from the environment above — not a prediction of the final outcome.
A read-only classification of the market environment — how much weight the current price deserves as a read of consensus. It describes conditions, never a trade.