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ARBITRAGE_ACTIVE // SPREAD: 99.2% // +$9920.00

Live prediction market odds for Who will be the Democratic nominee for CO-08?. Compare prices across Kalshi and Polymarket.

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Kalshi / Polymarket

Who will be the Democratic nominee for CO-08?

2026-05-01

About This Market

Share

Polymarket and Kalshi are tracking the race for the Democratic nominee for CO-08 ahead of the 2026 election. This contest is pivotal as it could influence party dynamics and strategies in a crucial battleground state.

Manny Rutinel leads the “Who will be the Democratic nominee for CO-08” event at 75.8% implied probability. Other contenders include Dave Young (50.4%), John Szemler (50.1%), Shannon Bird (21.3%), and Amie Baca-Oehlert (1.2%). A 99.2% cross-platform spread signals an active arbitrage window.

Price History

Multi-Platform Probabilities
Loading 30D data…

Live Markets

2 platforms
MR
Manny Rutinel
76% Avg
Kalshi78¢
Polymarket78¢
PlatformImplied %Yes — Bid / AskNo — Bid / Ask
KalshiKalshi
75.5%73¢78¢22¢27¢
PolymarketPolymarket
75.5%73¢78¢22¢27¢
DY
Dave YoungARB
50% Avg
Kalshi1¢
Polymarket100¢
PlatformImplied %Yes — Bid / AskNo — Bid / Ask
KalshiKalshi
0.5%0¢1¢99¢100¢
PolymarketPolymarket
100.0%100¢100¢0¢0¢
JS
John SzemlerARB
50% Avg
Kalshi1¢
Polymarket100¢
PlatformImplied %Yes — Bid / AskNo — Bid / Ask
KalshiKalshi
0.5%0¢1¢99¢100¢
PolymarketPolymarket
100.0%100¢100¢0¢0¢
SB
Shannon Bird
21% Avg
Kalshi27¢
Polymarket20¢
PlatformImplied %Yes — Bid / AskNo — Bid / Ask
KalshiKalshi
23.5%20¢27¢73¢80¢
PolymarketPolymarket
19.0%18¢20¢80¢82¢
AB
Amie Baca-Oehlert
1% Avg
Kalshi1¢
Polymarket2¢
PlatformImplied %Yes — Bid / AskNo — Bid / Ask
KalshiKalshi
0.5%0¢1¢99¢100¢
PolymarketPolymarket
1.0%0¢2¢98¢100¢

Candidate Spotlight

About Manny Rutinel

Manny Rutinel is a Democratic state representative for Colorado's 32nd district. He previously worked as an environmental attorney for Earthjustice's Sustainable Food and Farming Program. He is running for the Democratic nomination in Colorado's 8th Congressional District.

About Dave Young

Dave Young is the current Treasurer of Colorado, overseeing the state's $90 billion in assets. He previously served four terms in the Colorado House of Representatives, including as Chair of the House Appropriations Committee. His extensive public service and leadership in state finance make him a significant figure in Colorado's political landscape.

About John Szemler

John Szemler is a process improvement consultant specializing in implementing Microsoft Dynamics 365. He holds a BA in Political Science from Loyola University of Chicago and an MBA from the University of San Diego. Szemler is running as a Democratic candidate for Colorado's 8th congressional district in the 2026 U.S. House elections.

Frequently Asked Questions

What factors influence the odds for the Democratic nominee in CO-08?

Polling data, candidate endorsements, and campaign fundraising efforts significantly impact the odds. Additionally, local issues and voter sentiment can sway predictions.

Why is the CO-08 Democratic nomination important?

Winning the Democratic nomination for CO-08 is crucial for gaining a foothold in a competitive district. The outcome may affect broader electoral strategies in the state.

How do prediction markets work for this nomination?

Prediction markets aggregate collective insights on potential outcomes, allowing participants to buy and sell shares based on their expectations. Prices reflect the perceived likelihood of each candidate winning the nomination.

What is "Who will be the Democratic nominee for CO-08?" and why does it matter?

Who will be the Democratic nominee for CO-08 is a prediction market event currently tracked across 2 platforms (Kalshi, Polymarket). Manny Rutinel leads at 76% implied probability, making it the market favorite. Other contenders include Dave Young at 50%, John Szemler at 50%, Shannon Bird at 21%.

What is moving the odds on "Who will be the Democratic nominee for CO-08?"?

Manny Rutinel currently leads at 76% implied probability. Behind Manny Rutinel, Dave Young at 50% and John Szemler at 50% and Shannon Bird at 21% are the next closest contenders. The 99.2% cross-platform spread suggested platforms were pricing new information differently, creating potential trading opportunities.

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Resolution Oracles

KalshiKalshi
Democratic PartyRepublican Party
PolymarketPolymarket
UMA Optimistic Oracledemocrats.orgConsensus of Sources
Read Full Market Rulebooks
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Market Rulebook: Who will be the Democratic nominee for CO-08?

Official settlement criteria, resolution sources, and edge cases across Kalshi and Polymarket.

KalshiKalshi
Primary Rule

If Shannon Bird wins the nomination for the Democratic Party to contest the 2026 CO-8 House seat, then the market resolves to Yes.

Resolution Oracles
Democratic PartyRepublican Party
PolymarketPolymarket
Primary Rule

This market will resolve according to the candidate who wins the nomination for the Democratic Party to contest the CO-08 congressional district seat in the U.S. House of Representatives in the 2026 midterm elections. The Democratic primary will take place on June 30, 2026. If no nominee is announced by November 3, 2026, 11:59PM ET, this market will resolve to "Other". The resolution source for this market will be a consensus of official Democrat sources, including https://democrats.org/. Any replacement of the nominee before election day will not change the resolution of the market.

Resolution Oracles
UMA Optimistic Oracledemocrats.orgConsensus of Sources
Learn more:How to Read Prediction Market PricesCompare Fees Before You TradeNew to Polymarket?

About Shannon Bird

Shannon Bird is a Democratic candidate for Colorado's 8th Congressional District in the 2026 election. She served as a state representative from 2019 to 2026, including a term on the Joint Budget Committee. Her legislative experience and recent resignation to focus on her congressional campaign make her a key contender in the Democratic primary.
99.2%
Platforms2
Candidates6
Leader

Manny Rutinel

75.8% avg