Market comparison

Massachusetts Senate Election Margin of Victory

2 venues · 22 outcome rows · 0 comparable lines · event identity linked · 0 verified parity · active

Polymarket

Open venue ↗

12 outcomes · $20K reported volume

Observed 44s ago

Recorded venue end date: Nov 4, 2026

Kalshi

Open venue ↗

12 outcomes · $7K reported volume

Observed 44s 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.

No shared outcome identities or comparable outcome lines are available for this event. Each venue’s outcomes are listed separately.

Available outcome prices by venue for Massachusetts Senate Election Margin of Victory
Outcome	Polymarket	Kalshi	Difference
Democrat 0-10% Not aligned No persisted outcome identity connects these venue contracts.	1.5% Bid 0.4% · Ask 2.5% Democrat 0-10% Open Polymarket ↗	—	—
Democrat 10-15% Not aligned No persisted outcome identity connects these venue contracts.	1.6% Bid 0.4% · Ask 2.7% Democrat 10-15% Open Polymarket ↗	—	—
Democrat 15-20% Not aligned No persisted outcome identity connects these venue contracts.	9.8% Bid 0.7% · Ask 18.9% Democrat 15-20% Open Polymarket ↗	—	—
Democrat 20-25% Not aligned No persisted outcome identity connects these venue contracts.	11.5% Bid 10.0% · Ask 13.0% Democrat 20-25% Open Polymarket ↗	—	—
Democrat 25-30% Not aligned No persisted outcome identity connects these venue contracts.	17.0% Bid 16.0% · Ask 19.0% Democrat 25-30% Open Polymarket ↗	—	—
Democrat 30-35% Not aligned No persisted outcome identity connects these venue contracts.	33.5% Bid 32.0% · Ask 35.0% Democrat 30-35% Open Polymarket ↗	—	—
Democrat 35-40% Not aligned No persisted outcome identity connects these venue contracts.	20.5% Bid 20.0% · Ask 21.0% Democrat 35-40% Open Polymarket ↗	—	—
Democrat 40-45% Not aligned No persisted outcome identity connects these venue contracts.	5.0% Bid 1.0% · Ask 9.0% Democrat 40-45% Open Polymarket ↗	—	—
Democrat 45%+ Not aligned No persisted outcome identity connects these venue contracts.	5.0% Bid 2.7% · Ask 7.2% Democrat 45%+ Open Polymarket ↗	—	—
Markey, 21+ pts Not aligned No persisted outcome identity connects these venue contracts.	—	92.5% Bid 81.0% · Ask 92.5% Markey, 21+ pts Open Kalshi ↗	—
Markey, 23+ pts Not aligned No persisted outcome identity connects these venue contracts.	—	83.0% Bid 74.0% · Ask 85.0% Markey, 23+ pts Open Kalshi ↗	—
Markey, 25+ pts Not aligned No persisted outcome identity connects these venue contracts.	—	76.0% Bid 67.0% · Ask 76.0% Markey, 25+ pts Open Kalshi ↗	—
Markey, 27+ pts Not aligned No persisted outcome identity connects these venue contracts.	—	59.0% Bid 55.0% · Ask 67.0% Markey, 27+ pts Open Kalshi ↗	—
Markey, 29+ pts Not aligned No persisted outcome identity connects these venue contracts.	—	56.0% Bid 45.0% · Ask 56.0% Markey, 29+ pts Open Kalshi ↗	—
Markey, 31+ pts Not aligned No persisted outcome identity connects these venue contracts.	—	43.0% Bid 33.0% · Ask 43.0% Markey, 31+ pts Open Kalshi ↗	—
Markey, 33+ pts Not aligned No persisted outcome identity connects these venue contracts.	—	34.0% Bid 25.0% · Ask 35.0% Markey, 33+ pts Open Kalshi ↗	—
Markey, 35+ pts Not aligned No persisted outcome identity connects these venue contracts.	—	24.0% Bid 14.0% · Ask 25.0% Markey, 35+ pts Open Kalshi ↗	—
Markey, 37+ pts Not aligned No persisted outcome identity connects these venue contracts.	—	15.0% Bid 6.7% · Ask 17.0% Markey, 37+ pts Open Kalshi ↗	—
Markey, 39+ pts Not aligned No persisted outcome identity connects these venue contracts.	—	7.2% Bid 1.4% · Ask 13.0% Markey, 39+ pts Open Kalshi ↗	—
Markey, 41+ pts Not aligned No persisted outcome identity connects these venue contracts.	—	9.6% Bid 2.0% · Ask 9.6% Markey, 41+ pts Open Kalshi ↗	—
Markey, 43+ pts Not aligned No persisted outcome identity connects these venue contracts.	—	7.5% Bid 0.0% · Ask 7.7% Markey, 43+ pts Open Kalshi ↗	—
Republican Wins Not aligned No persisted outcome identity connects these venue contracts.	0.2% Bid 0.1% · Ask 0.3% Republican Wins Open Polymarket ↗	—	—

Democrat 0-10%

Not aligned

No persisted outcome identity connects these venue contracts.

Polymarket

1.5%

Bid 0.4% · Ask 2.5%

Democrat 0-10%

Open Polymarket ↗

Kalshi

—

Democrat 10-15%

Not aligned

No persisted outcome identity connects these venue contracts.

Polymarket

1.6%

Bid 0.4% · Ask 2.7%

Democrat 10-15%

Open Polymarket ↗

Kalshi

—

Democrat 15-20%

Not aligned

No persisted outcome identity connects these venue contracts.

Polymarket

9.8%

Bid 0.7% · Ask 18.9%

Democrat 15-20%

Open Polymarket ↗

Kalshi

—

Democrat 20-25%

Not aligned

No persisted outcome identity connects these venue contracts.

Polymarket

11.5%

Bid 10.0% · Ask 13.0%

Democrat 20-25%

Open Polymarket ↗

Kalshi

—

Democrat 25-30%

Not aligned

No persisted outcome identity connects these venue contracts.

Polymarket

17.0%

Bid 16.0% · Ask 19.0%

Democrat 25-30%

Open Polymarket ↗

Kalshi

—

Democrat 30-35%

Not aligned

No persisted outcome identity connects these venue contracts.

Polymarket

33.5%

Bid 32.0% · Ask 35.0%

Democrat 30-35%

Open Polymarket ↗

Kalshi

—

Democrat 35-40%

Not aligned

No persisted outcome identity connects these venue contracts.

Polymarket

20.5%

Bid 20.0% · Ask 21.0%

Democrat 35-40%

Open Polymarket ↗

Kalshi

—

Democrat 40-45%

Not aligned

No persisted outcome identity connects these venue contracts.

Polymarket

5.0%

Bid 1.0% · Ask 9.0%

Democrat 40-45%

Open Polymarket ↗

Kalshi

—

Democrat 45%+

Not aligned

No persisted outcome identity connects these venue contracts.

Polymarket

5.0%

Bid 2.7% · Ask 7.2%

Democrat 45%+

Open Polymarket ↗

Kalshi

—

Markey, 21+ pts

Not aligned

No persisted outcome identity connects these venue contracts.

Polymarket

—

Kalshi

92.5%

Bid 81.0% · Ask 92.5%

Markey, 21+ pts

Open Kalshi ↗

Markey, 23+ pts

Not aligned

No persisted outcome identity connects these venue contracts.

Polymarket

—

Kalshi

83.0%

Bid 74.0% · Ask 85.0%

Markey, 23+ pts

Open Kalshi ↗

Markey, 25+ pts

Not aligned

No persisted outcome identity connects these venue contracts.

Polymarket

—

Kalshi

76.0%

Bid 67.0% · Ask 76.0%

Markey, 25+ pts

Open Kalshi ↗

Markey, 27+ pts

Not aligned

No persisted outcome identity connects these venue contracts.

Polymarket

—

Kalshi

59.0%

Bid 55.0% · Ask 67.0%

Markey, 27+ pts

Open Kalshi ↗

Markey, 29+ pts

Not aligned

No persisted outcome identity connects these venue contracts.

Polymarket

—

Kalshi

56.0%

Bid 45.0% · Ask 56.0%

Markey, 29+ pts

Open Kalshi ↗

Markey, 31+ pts

Not aligned

No persisted outcome identity connects these venue contracts.

Polymarket

—

Kalshi

43.0%

Bid 33.0% · Ask 43.0%

Markey, 31+ pts

Open Kalshi ↗

Markey, 33+ pts

Not aligned

No persisted outcome identity connects these venue contracts.

Polymarket

—

Kalshi

34.0%

Bid 25.0% · Ask 35.0%

Markey, 33+ pts

Open Kalshi ↗

Markey, 35+ pts

Not aligned

No persisted outcome identity connects these venue contracts.

Polymarket

—

Kalshi

24.0%

Bid 14.0% · Ask 25.0%

Markey, 35+ pts

Open Kalshi ↗

Markey, 37+ pts

Not aligned

No persisted outcome identity connects these venue contracts.

Polymarket

—

Kalshi

15.0%

Bid 6.7% · Ask 17.0%

Markey, 37+ pts

Open Kalshi ↗

Markey, 39+ pts

Not aligned

No persisted outcome identity connects these venue contracts.

Polymarket

—

Kalshi

7.2%

Bid 1.4% · Ask 13.0%

Markey, 39+ pts

Open Kalshi ↗

Markey, 41+ pts

Not aligned

No persisted outcome identity connects these venue contracts.

Polymarket

—

Kalshi

9.6%

Bid 2.0% · Ask 9.6%

Markey, 41+ pts

Open Kalshi ↗

Markey, 43+ pts

Not aligned

No persisted outcome identity connects these venue contracts.

Polymarket

—

Kalshi

7.5%

Bid 0.0% · Ask 7.7%

Markey, 43+ pts

Open Kalshi ↗

Republican Wins

Not aligned

No persisted outcome identity connects these venue contracts.

Polymarket

0.2%

Bid 0.1% · Ask 0.3%

Republican Wins

Open Polymarket ↗

Kalshi

—

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

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