How accurate are political prediction markets?

Historically more accurate than polls. Polymarket's Brier score on US 2024 elections was ~0.11 — better than 538 (~0.14) and every mainstream poll. Markets aggregate information with real skin in the game.

What resolution source is used for elections?

Polymarket defines the source per contract — usually Associated Press (AP Race Call), Reuters or the official electoral commission. The source is stated in contract details before the market opens.

Can prediction markets influence election outcomes?

Markets reflect expectations rather than create them. Studies show public-facing markets can anchor expectations, but don't influence the underlying outcome. Political markets are information, not advocacy.

Which platform has the deepest political liquidity?

Polymarket — by far. US 2024 presidential volume was ~$3.5B vs Kalshi (~$200M) and Betfair (~$120M). Where Polymarket is geo-blocked, brokers like Election Predictions UK route into the same order book at 0% fees.

How fast do political markets react to news?

High-liquidity markets move within seconds to minutes. A Trump tweet on the economy can shift the "Trump 2024" market 2-5 points before mainstream media has written anything.

Toronto Blue Jays vs. Seattle Mariners | Election Predictions 2026

Name: Toronto Blue Jays vs. Seattle Mariners
Start: 2026-06-27T13:03:05.541Z
End: 2026-07-11T02:10:00.000Z

Platform comparison

Platform	YES odds	NO odds	Fee	KYC	Settlement
Polymarket (via Election Predictions UK) Pick polygram.ink (preferred broker)	67%	33%	0% (USDC on-chain)	No-KYC up to $1,500	USDC, auto via UMA oracle	Trade this market →
Polymarket (direct) polymarket.com	67%	33%	0%	Geo-blocked in US/UK/EU	USDC, on-chain	Trade this market →
Kalshi kalshi.com	—	—	Up to 7% per trade	US-only, KYC required	USD	Trade this market →
Betfair Exchange betfair.com	—	—	2-5% commission	Full KYC from first trade	GBP / EUR	Trade this market →
Manifold Markets manifold.markets	—	—	Play-money (mana)	None — play-money	Mana (no cash-out)	Trade this market →

Outcome probabilities

Current market-implied probability for each outcome, from the live order book.

Outcome	Probability
1st 5 Innings O/U 2.5	67%
Toronto Blue Jays vs. Seattle Mariners	55%
1st 5 Innings O/U 3.5	50%
NRFI	44%
O/U 7.5	44%
Spread -1.5	41%
1st 5 Innings O/U 4.5	38%
1st 5 Innings Spread -1.5	30%
1st 5 Innings O/U 5.5	27%
1st 5 Innings Spread -1.5	25%
1st 5 Innings Spread -2.5	18%
1st 5 Innings O/U 6.5	18%
1st 5 Innings Spread -2.5	13%
Extra Innings	9%

Market context

Live Polymarket data shows 67% YES probability for Toronto Blue Jays vs. Seattle Mariners. In the upcoming MLB game between the Toronto Blue Jays and Seattle Mariners, scheduled for July 3 at 10:10PM ET: This market will resolve to "Toronto Blue Jays" if the Toronto Blue Jays win the game.…

Live Data & Statistics

The Polymarket order book prices 1st 5 Innings O/U 2.5 at 67% for "Toronto Blue Jays vs. Seattle Mariners".

1st 5 Innings O/U 2.5 67% Other 33%

Live stats load when the match begins. Current market odds are shown above. Trading volume: $208K.

Methodology

Political prediction markets differ structurally from sports betting: thinner liquidity, longer settlement windows, higher sensitivity to single news events. This page shows the live Polymarket quote for Toronto Blue Jays vs. Seattle Mariners plus platform attributes for the three reference venues, so you can see at a glance where the deepest market for this question sits.

Resolution & payout

For political markets the resolution source is decisive. Polymarket defines a concrete source per contract (e.g. AP, Reuters, official electoral commission) and uses the UMA Optimistic Oracle as the on-chain dispute mechanism. With a clearly defined outcome the USDC payout lands within minutes of the final confirmation.

FAQ

How accurate are political prediction markets?: Historically more accurate than polls. Polymarket's Brier score on US 2024 elections was ~0.11 — better than 538 (~0.14) and every mainstream poll. Markets aggregate information with real skin in the game.
What resolution source is used for elections?: Polymarket defines the source per contract — usually Associated Press (AP Race Call), Reuters or the official electoral commission. The source is stated in contract details before the market opens.
Can prediction markets influence election outcomes?: Markets reflect expectations rather than create them. Studies show public-facing markets can anchor expectations, but don't influence the underlying outcome. Political markets are information, not advocacy.
Which platform has the deepest political liquidity?: Polymarket — by far. US 2024 presidential volume was ~$3.5B vs Kalshi (~$200M) and Betfair (~$120M). Where Polymarket is geo-blocked, brokers like Election Predictions UK route into the same order book at 0% fees.
How fast do political markets react to news?: High-liquidity markets move within seconds to minutes. A Trump tweet on the economy can shift the "Trump 2024" market 2-5 points before mainstream media has written anything.

David ParkSports Data Analystand

Oliver HughesBlockchain & Crypto Reporter

Trade Toronto Blue Jays vs. Seattle Mariners on Election Predictions UK

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Toronto Blue Jays vs. Seattle Mariners

Platform comparison

Outcome probabilities

Market context

Live Data & Statistics

Methodology

Resolution & payout

FAQ

Trade Toronto Blue Jays vs. Seattle Mariners on Election Predictions UK

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