Idaho vs. Portland State prediction: Why Idaho is favored to win in college football Week 9 [2026]

Using innovative machine learning and statistical analysis, we have re-simulated the outcome of Idaho vs. Portland State, forming part of our college football predictions coverage.

Our independent predictive model currently gives Idaho a 75.1% chance of defeating Portland State. Our predicted final score has Idaho winning 35-26. According to our model, Portland State (+10.5) has a 54.7% chance of covering the spread, while the over/under total of 63.5 points has a 52.7% chance of staying under.

Latest betting odds

We have sourced the best college football odds in America for this game, which are listed here:

• Spread: Idaho -10.5 (+117) / Portland State +10.5 (-178)
• Moneyline: Idaho -300, Portland State +285
• Total: Over/Under 63.5 (-110/-112)

All odds are correct at the time of publication and are subject to change.

Model picks and best bet

After matching our probabilities against the best available odds, we can reveal our picks for each of the major markets in this matchup. Plus, find our best bet for the game below:

• Spread: Idaho -10.5 @ 46¢ via Novig
• Moneyline: Idaho @ 75¢ via Novig
• Total: Under 63.5 @ -112 via DraftKings

According to our college football best bets, the top play to make on this game is Idaho to win.

These picks are based on our probabilities matched against the implied probabilities from the current available odds.

Game info & kickoff details

Saturday's college football action between Portland State and Idaho at Hillsboro Stadium is scheduled to start at 4:00 PM ET.

• Who: Idaho vs. Portland State
• Date: Saturday, October 31, 2026
• Time: 4:00 PM ET/1:00 PM PT
• Venue: Hillsboro Stadium

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Conclusion

We predict Idaho, with a 75.1% win probability, will likely beat Portland State in Saturday's college football matchup.

Additional tools and information for betting safely can be found in our Responsible Gambling hub.

This article's predictions and probabilities are generated by Dimers' proprietary College Football prediction model. Our editorial team reviews the resulting content for accuracy and presentation before publication.