If the game is postponed but begins within 48 hours of its originally scheduled start time, the market will remain open and resolve based on the official final result. If the game is cancelled or not started within 48 hours of its originally scheduled start, the market will resolve to a fair price. Kalshi is not affiliated, associated, authorized, endorsed by, or in any way officially connected with the NCAA. All trademarks, logos, and brand names are the property of their respective owners.

Resolution Oracles

Kalshi Rules

Polymarket

Primary Rule

In the upcoming college football game between Idaho and Portland State, scheduled for October 31 at 4:00PM ET: This market will resolve to "Idaho" if Idaho win the game. This market will resolve to "Portland State" if Portland State win the game. Overtime is included if played. If the game ends in a tie, this market will resolve 50-50. If the game is postponed, this market will remain open until the game has been completed. If the game is canceled entirely, with no make-up game, this market will resolve 50-50.

Resolution Oracles

UMA Optimistic Oracle

Polymarket US

Primary Rule

This market will settle to the winner of the Idaho vs Portland State college football game scheduled for October 31, 2026 at 4:00PM ET (as of the listing of the event's first instrument). Overtime is included if played. If the game is delayed, postponed, suspended or otherwise rescheduled to a date and time not within two days of the originally scheduled date and time, the market will settle to the last fair market price. Outcome sourced from the relevant governing body.

Frequently Asked Questions

What does the Idaho Vandals vs. Portland State Vikings prediction market track?

The outcomes listed above show how traders are pricing this question. Compare outcome prices from Kalshi, Polymarket US, Polymarket in one place. Each price reflects the market’s implied probability, not a guaranteed result.

What are the latest Idaho Vandals vs. Portland State Vikings odds?

The latest available prices are Idaho Vandals: 82.0¢ on Kalshi, 85.0¢ on Polymarket, 82.0¢ on Polymarket US; Portland State Vikings: 32.0¢ on Kalshi, 36.0¢ on Polymarket, 37.0¢ on Polymarket US. Prices are quoted in cents per $1 share. Check the venue for executable prices and available liquidity.

Why do Idaho Vandals vs. Portland State Vikings odds vary across prediction markets?

The largest price difference shown across venues is 5.0 percentage points. Venues have different traders, liquidity and fees, so their prices can differ. A price gap alone does not establish an executable arbitrage opportunity; compare settlement rules and the actual buy and sell prices.

How do Idaho Vandals vs. Portland State Vikings prediction market payouts work?

For example, Idaho Vandals at 83.0¢ implies about a 83.0% chance. For a standard $1 contract, a share pays $1 if its outcome settles as correct and $0 if it settles as incorrect. A winning share bought at 40¢ earns 60¢ before fees. Check each venue’s settlement rules, fees and eligibility before trading.

Idaho Vandals vs. Portland State Vikings

Idaho Vandals vs. Portland State Vikings

About This Market

Price History

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Idaho Vandals vs. Portland State Vikings

Idaho Vandals vs. Portland State Vikings

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Market Rulebook: Idaho Vandals vs. Portland State Vikings

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