ManifoldPlay moneyPoliticsDevelopingUpdated 9m ago

Will the Democrats hold 53 or more Senate seats in the next Congress?

As of Oct 21, 2026, 8:33 PM ET, Manifold priced this market at 36.1% (up from 35.0% 24 hours earlier). It had 9.4K mana traded in the past 24 hours and 6K mana of pool liquidity. probcast.co rates the support behind this price as moderate.

Market probability
36.1%
+1.1 percentage points
over 24 hours35.0% → 36.1%

Play-money market (mana, not dollars) — thin market where small orders can move the price, traded by a small group of accounts.

Price historyManifold

Source: Manifold price history

How credible was the move?

Methodology →

Move validity

Moderate

Consensus stability

Stable

Contract clarity

Medium

Can you trust this price?

Two different questions: how hard the price is to move, and whose trading set it.

Market capacity

How hard is it to move this price?

Thin

Pool liquidity

6K mana

Bid-ask spread

n/a

automated market maker

24h volume

9.4K mana

Total volume

0 mana

Play money: depth is in mana, so it says nothing about real-money conviction.

Who's trading

Whose opinion is this price?

A few accounts
54%of the traded money came from the single largest account

Accounts

9

Trades

15

over 2h

Largest order

3.5K mana

6.5K mana traded across these 15 trades (last 2h).

A small group of accounts did most of the trading — neither one whale nor a broad crowd.

Recent trade activity$6.5K traded

From the latest trade tape (most recent 200 prints) — a live activity sample, not a lifetime total.

What could move this market next?

  • The market's deadline arrivesFebruary 1, 2027 at 7:00 PM ET

    The contract must resolve based on what has happened by this date.

Derived from the contract's own mechanics as of Oct 21, 8:42 PM ET. ProbCast does not list scheduled meetings, announcements, or data releases it cannot verify.

Advanced analysis (experimental)

Research signals — these models are still accumulating the history needed for full validation, and they can disagree with the headline read. Model confidence: low · expected error ±20 pts.

Thin marketLegacy movement classifier: watch

What's happening

medium classifier confidence
Thin market

Thin book and/or wide spread. Small orders can move this price disproportionately, so any single print is noisy and easily overread.

  • Thin book and/or wide spread.

Read with caution —Read the latest price with caution; conditions make it an unreliable summary right now.

More details — reliability score, dynamics, durability
Reliability score
7Low
Where the price path tends to go next1481 observed
  • Choppy / mean-reverting97%
  • Stable consensus1%

Short-term motion of the price line (~1h), distinct from the environment above — not a prediction of the final outcome.

DurabilityMedium· half-life <1h
PredictabilityStable

Secondary read: leaning toward Resolving soon.

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.

Change (pts)1H-0.36H+1.124H+1.17D+1.1

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