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.

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 Trump Prediction 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.

Why do Polymarket and Kalshi differ on elections?

Kalshi must follow CFTC compliance — strict definitions, clear resolution sources, US citizens only with KYC. Polymarket operates globally without CFTC oversight — deeper liquidity, but also higher regulatory risk.

54% odds: Chicago Cubs vs. Baltimore Orioles

Name: Chicago Cubs vs. Baltimore Orioles
Start: 2026-07-01T13:02:38.077Z
End: 2026-07-14T22:35:00.000Z

Platform comparison

Platform	YES odds	NO odds	Fee	KYC	Settlement
Polymarket (via Trump Prediction) Pick polygram.ink (preferred broker)	54%	46%	0% (USDC on-chain)	No-KYC up to $1,500	USDC, auto via UMA oracle	Live odds →
Polymarket (direct) polymarket.com	54%	46%	0%	Geo-blocked in US/UK/EU	USDC, on-chain	Live odds →
Kalshi kalshi.com	—	—	Up to 7% per trade	US-only, KYC required	USD	Live odds →
Betfair Exchange betfair.com	—	—	2-5% commission	Full KYC from first trade	GBP / EUR	Live odds →
Manifold Markets manifold.markets	—	—	Play-money (mana)	None — play-money	Mana (no cash-out)	Live odds →

Outcome probabilities

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

Outcome	Probability
1st 5 Innings O/U 4.5	54%
NRFI	51%
Chicago Cubs vs. Baltimore Orioles	50%
1st 5 Innings Spread -1.5	50%
1st 5 Innings Spread -1.5	50%
1st 5 Innings Spread -2.5	50%
1st 5 Innings Spread -2.5	50%
1st 5 Innings O/U 2.5	50%
1st 5 Innings O/U 3.5	50%
1st 5 Innings O/U 6.5	50%
Extra Innings	50%
O/U 9.5	46%
1st 5 Innings O/U 5.5	42%
Spread -1.5	40%

Market context

Traders on decentralised prediction markets give 54% probability to chicago cubs vs. baltimore orioles. In the upcoming MLB game between the Chicago Cubs and Baltimore Orioles, scheduled for July 7 at 6:35PM ET: This market will resolve to "Chicago Cubs" if the Chicago Cubs win the game. This market w…

Live Data & Statistics

The Polymarket order book prices 1st 5 Innings O/U 4.5 at 54% for "Chicago Cubs vs. Baltimore Orioles".

1st 5 Innings O/U 4.5 54% Other 46%

Live stats load when the match begins. Current market odds are shown above. Trading volume: $270K.

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 Chicago Cubs vs. Baltimore Orioles 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

Political markets typically settle on official candidate or agency confirmation. Polymarket uses UMA Optimistic Oracle: a proposer posts the outcome with a bond, the two-hour window opens, then the smart contract pays USDC.

Kalshi settles USD via CFTC clearinghouse, with clearly defined resolution sources (e.g. AP race calls for elections). Betfair settles after the official outcome is registered with the league or agency. Manifold is play-money.

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.
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 Trump Prediction 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.
Why do Polymarket and Kalshi differ on elections?: Kalshi must follow CFTC compliance — strict definitions, clear resolution sources, US citizens only with KYC. Polymarket operates globally without CFTC oversight — deeper liquidity, but also higher regulatory risk.

Sarah MitchellPolitical Markets Writerand

James WilliamsPrediction Market Analyst

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Chicago Cubs vs. Baltimore Orioles

Platform comparison

Outcome probabilities

Market context

Live Data & Statistics

Methodology

Resolution & payout

FAQ

Trade Chicago Cubs vs. Baltimore Orioles on Trump Prediction

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