The Prediction Markets

Market comparison

AL-05 House Election Winner

2 venues · 2 outcome rows · 2 comparable lines · event identity linked · 0 verified parity · active

Polymarket

Open venue ↗

8 outcomes · $68K reported volume

Observed 32s ago

Recorded venue end date: Nov 4, 2026

2 outcomes · $6K reported volume

Observed 2m ago

Recorded venue end date: Nov 3, 2027

Check settlement rules before comparing contracts. Matched outcomes may settle differently. These venues also report end dates more than 48 hours apart; event identity does not mean the contracts close or settle together. These are stored prices; record update times do not certify live quotes. Differences exclude fees and available size.

Known rule differences between venues

  • Kalshi settles on the party of the officeholder sworn in/inaugurated for the new term; Polymarket settles on the party of the called winner. They differ if the winner dies, withdraws or is not seated before the term starts.
  • Independents: Polymarket assigns a non-affiliated winner by stated caucus (House) or excludes independents from party options (Senate/Governor); Kalshi requires party membership.
  • Kalshi may close early on a media-consensus projection; Polymarket resolves on consensus calls with certification as the fallback.

A shared identity alone does not make a price difference executable.

Democratic

Partial parity

Payoffs match in ordinary outcomes; see the rule differences above.

Polymarket

4.5%

Bid 3.0% · Ask 5.9%

Andrew Sneed (D)

Open Polymarket ↗

Kalshi

5.7%

Bid 4.1% · Ask 5.7%

Andrew Sneed

Open Kalshi ↗

Price difference 1.3 pp

Republican

Partial parity

Payoffs match in ordinary outcomes; see the rule differences above.

Polymarket

94.3%

Bid 94.2% · Ask 94.3%

Dale Strong (R)

Open Polymarket ↗

Kalshi

95.8%

Bid 93.7% · Ask 95.8%

Dale Strong

Open Kalshi ↗

Price difference 1.5 pp

Prices are shown as percentages of a $1 payout. “pp” means percentage points. A dash means data is unavailable.