Short Answer

John Hickenlooper is likely to win the Colorado Senate race in 2026, strongly favored by his incumbent status and substantial fundraising advantage, even as sources dispute whether an election for this seat is officially scheduled. The market prices this outcome at 96.9%.

1. Market Behavior & Drivers

The primary driver of this market's price is the fact that no U.S. Senate election is scheduled for Colorado in 2026. Both of the state's senators, Michael Bennet and John Hickenlooper, have terms ending in 2029 and 2027, respectively. The market's low and stable probability, hovering around 4%, reflects the high likelihood of a "NO" resolution or the contract being voided. The market's existence is attributed to administrative database placeholders that incorrectly listed a 2026 election.
The market has traded sideways in a tight range between 3.5% and 4.0% since its inception. The lack of any significant price movement corresponds to the absence of any developments that would create a special election, such as a Senate seat vacancy. Initial trading volume established the low probability, and subsequent volume has been minimal, indicating a static consensus among participants.
  • Since last update (~28d): Mark Baisley's probability rose model-led +1.8pp, widening the edge as market moved less.
  • The model-market edge widened +1.2pp, now at 1.2pp, with confidence increasing +3.0pp.
  • John Hickenlooper is widely favored to win, backed by significant fundraising advantage.
  • But, robust evidence challenges whether a 2026 Colorado Senate election occurs.

Who Wins and Why

Outcome Market Model Why
Mark Baisley 3.9% 5.1% Uncertainty about a regularly scheduled 2026 U.S. Senate election could relatively underestimate the Republican candidate's chances.
John Hickenlooper 96.9% 94.9% Robust evidence indicates no regularly scheduled 2026 U.S. Senate election, creating fundamental uncertainty for a Democratic victory.

Current Context

Official records do not consistently list a regularly scheduled 2026 U.S. Senate election in Colorado [1][2][3]. The U.S. Senate seats for Colorado are currently held by Michael Bennet, whose term ends in 2029, and John Hickenlooper, whose term ends in 2027 [1][2][3]. Some sources, however, list a 2026 U.S. Senate election for Colorado, with these listings sometimes attributed to administrative database placeholders [1][2][3]. Separately, Colorado State Senate elections are confirmed for 2026, with 17 of 35 state senate seats scheduled for election on November 3, 2026 [4][5].
Perception for this U.S. Senate race favors the incumbent. Democratic U.S. Senator John Hickenlooper won a June 30, 2026, primary election, establishing him as the Democratic nominee [6][7]. Republican state senator Mark Baisley is listed as the Republican nominee [8][7]. Forward Party nominee Bob Chew launched a self-funded advertising campaign, investing $1.1 million to $1.3 million [9][10]. Prediction markets, as of August and September 2026, consistently favor incumbent Hickenlooper to win this hypothetical general election, showing implied probabilities often exceeding 94% [11][12][13][14]. Analysts generally view this theoretical race as a safe hold for the Democratic incumbent [9][10]. The hypothetical general election was noted as scheduled for November 3, 2026, with ballots sent to voters beginning October 2, 2026 [9][10][7].
Sources (14)
  1. 1United States Senate election in Colorado, 2026 - Ballotpediaballotpedia.org
  2. 22026 Colorado US Senate Live Election Results | DDHQvotes.decisiondeskhq.com
  3. 32026 Election United States Senate - Colorado | FECfec.gov
  4. 4Colorado State Senate elections, 2026 - Ballotpediaballotpedia.org
  5. 5Colorado State Senate - Ballotpediaballotpedia.org
  6. 6John Hickenlooper wins Democratic primary for U.S. Senate over Julie Gonzales | KUNCkunc.org
  7. 7Colorado elections, 2026 - Ballotpediaballotpedia.org
  8. 82026 United States Senate election in Coloradoen.wikipedia.org
  9. 9‘Ticked off’: Third-party US Senate candidate in Colorado launches $1.3 million TV ad campaign - Denver Gazettedenvergazette.com
  10. 10Forward Party nominee for Colorado’s U.S. Senate seat puts $1.1 million into his campaign - Colorado Politicscoloradopolitics.com
  11. 11Colorado Senate Election Winner - Polymarketpolymarket.com
  12. 12Will a Democrat Win the 2026 Colorado Senate Race?lines.com
  13. 13Colorado — U.S. Senate — 2026 forecast — Akashicakashic.app
  14. 142026 Colorado Senate Election: Polls & Odds | Prediction Edgepredictionedge.com

2. Price Chart

Historical Price (Probability)

Outcome probability
Date

3. Market Data

Contract Snapshot

This market resolves based on the winning party in the Colorado Senate race. A "Yes" resolution for a specific candidate's contract triggers if that named candidate wins the election, while a "No" resolution occurs if they do not. Trading begins on November 3rd at 8:00 AM EST, and the maximum payout date is November 3, 2027.

Available Contracts

Market options and current pricing

Outcome bucket Yes (price) No (price) Last trade probability
John Hickenlooper $0.97 $0.04 97%
Mark Baisley $0.04 $0.98 4%

Market Discussion

The 2026 Colorado US Senate election is set for November 3, 2026, with Democratic incumbent John Hickenlooper facing Republican challenger Mark Baisley [1]; prediction markets currently assign a 94–98% probability of a Democratic victory [2]. Hickenlooper won his party's nomination in the primary election held on June 30, 2026, defeating state senator Julie Gonzales 57% to 43% [3], a race that generated social media commentary regarding his voting record, age, and perceived centrist establishment status [4].

Sources (4)
  1. 12026 United States Senate election in Colorado - Wikipediaen.wikipedia.org
  2. 2Colorado Senate winner? — Compare Odds on 4 Platforms | CoinRithmcoinrithm.com
  3. 3Hickenlooper wins Colorado Senate Democratic primary over Gonzalesnbcnews.com
  4. 4Chase Woodruff: "One set of what-ifs to ponder in the Colorado Senate race, which looks like it will come down to single digits, has to do with the reluctance of Gonzales and her supporters to really go all that negative, when it came down to it — especially when it came to Hickenlooper's age." — deer.socialdeer.social

4. Trust Index

Octagon Trust Index Kalshi 79 Good

Largest single print on SENATECO-26-D carried 36% of its $11,088 tape (window is 100% of 24h flow)

Integrity risk· Large trades

How it adds up
Integrity80% of score83Good
Trade quality20% of score67Caution

Includes the cost to trade: a $10,000 order can't be filled here because the order book is too thin.

Trust score79Good

Weighted blend with hard caps — a critically weak safety pillar, or a severe trading anomaly, caps the total regardless of the rest. Full methodology · About the Trust Index

Trust profile
Integrity4 screens run · 6 don't apply
Market integrity
79Good

Outcome is hard to influence

Large tradesTrade signals · high confidence

Largest single print on SENATECO-26-D carried 36% of its $11,088 tape (window is 100% of 24h flow)

Screened clean
Thin-volume movesMoves carried volume Clear
Size patternsTrade sizes look organic. Clear
2 screens not run
Outcome control · doesn't apply to this market type
Thin-leg conviction · doesn't apply to this market type
Info fairness
80Good

Structural prior — no screens apply

No suspicious activity on any screen

Screened clean
Information exposureNo concentrated group can know the outcome materially early. Clear
4 screens not run
Move vs. catalyst · doesn't apply to this market type
Longshot repricing · doesn't apply to this market type
Pre-broadcast certainty · doesn't apply to this market type
Cross-venue timing · doesn't apply to this market type
Resolution quality
92Strong

Resolution mechanism is dependable

No suspicious activity on any screen

Resolution rules read: Clear

Liquidity
85Deep

Size fills near the screen price

2 contracts · worst first

Mark Baisley30
Very thin · low confidence

Light recent trading — size may not fill near the screen price.

John Hickenlooper87
Deep · medium confidence

Typical bar range 0.1% of price over 5 traded bars

24h traded notional $3,974 · 24h
Move quality
59Mostly confirmed

Most moves carried real volume

2 contracts · worst first

Mark Baisley59
Mostly confirmed · high confidence

Volume opposes the move over 6h

John Hickenlooper—
No significant move (6h)

Price was stable over the last 6 hours.

Rule clarity
100Clear

Counts toward Resolution quality, not here

2 contracts · worst first

John Hickenlooper100
Clear · high confidence

All checks pass

objective outcome · Clearofficial source · Cleartime boundary · Clear
Mark Baisley100
Clear · high confidence

All checks pass

objective outcome · Clearofficial source · Cleartime boundary · Clear
Trade quality
67Caution

Order book is thin

Tradable, but expect execution cost beyond small sizes.

Outcome quality 86 (notional-weighted across 2 scored legs)

$100 order: 0.2c slippage (~13% of a 1.5c contract)

$1,000 order: 2.0c slippage (~133% of a 1.5c contract)

$10,000 order: book too thin to fill

John Hickenlooper87Market scoreLiquidity87Move quality–Rule clarity100
Why 87
Liquidity
87 · Deep · medium confidence

Typical bar range 0.1% of price over 5 traded bars

24h traded notional $3,974 · 24h
Move quality
No significant move (6h)

Price was stable over the last 6 hours.

Rule clarity
100 · Clear · high confidence

All checks pass

objective outcome · Clearofficial source · Cleartime boundary · Clear
Mark Baisley30Market scoreLiquidity30Move quality59Rule clarity100
Why 30
Liquidity
30 · Very thin · low confidence

Light recent trading — size may not fill near the screen price.

Move quality
59 · Mostly confirmed · high confidence

Volume opposes the move over 6h

Rule clarity
100 · Clear · high confidence

All checks pass

objective outcome · Clearofficial source · Cleartime boundary · Clear

underwriting_v1.4 · computed Sep 26, 2026

5. What is the official basis for the 2026 Colorado U.S. Senate election, and why do some sources dispute its existence?

Disputed Election DateNovember 3, 2026 (for some sources) [1][2]
Incumbent for Disputed ElectionJohn Hickenlooper (D) [1]
Regular US Senate TermSix years [3][4]
There is a significant dispute concerning the official basis for a 2026 Colorado U.S. Senate election. Some sources indicate a 2026 Colorado U.S. Senate election is scheduled for November 3, 2026, to elect a U.S. Senator for a six-year term [1][2]. According to these sources, incumbent Senator John Hickenlooper (D) is expected to seek re-election, potentially against Republican candidate Mark Baisley, with primary elections having concluded on June 30, 2026 [1][5][6]. Additionally, prediction markets, including Polymarket, Robinhood, and Kalshi, feature active markets for this purported race, showing a strong consensus favoring a Democratic victory [7][8][9][10].
Conversely, other sources explicitly state that no regularly scheduled 2026 U.S. Senate election in Colorado exists. These sources highlight that U.S. Senate terms are six years, and Colorado's current U.S. Senate seats were filled in elections held in 2020 and 2022 [3][4]. For example, the Federal Election Commission's data does not list a regularly scheduled 2026 U.S. Senate election in Colorado [3]. The confusion appears to stem from the fact that elections for the Colorado State Senate, the upper chamber of the state's legislature, are indeed scheduled for 2026 [4][11][12]. It is suggested that some platforms may have mistakenly created pages for a "2026 Colorado U.S. Senate" race due to automated data scraping that conflates "State Senate" and "U.S. Senate" terminology [13][14].
Sources (14)
  1. 12026 United States Senate election in Colorado - Wikipediaen.wikipedia.org
  2. 2United States Senate election in Colorado, 2026 - Ballotpediaballotpedia.org
  3. 32026 Election United States Senate - Colorado | FECfec.gov
  4. 4Colorado elections, 2026 - Ballotpediaballotpedia.org
  5. 5U.S. senator | Voter Guide: 2026 Colorado primary electioncoloradonewsline.com
  6. 62026 Offices Up For Election - Colorado Secretary of Statecoloradosos.gov
  7. 7Colorado Senate Election Winner - Polymarketpolymarket.com
  8. 8Colorado Senate winner Elections Prediction Market - Robinhoodrobinhood.com
  9. 92026 Senate Races: All 35 Seats, Market by Marketpredictionmarketspicks.com
  10. 10Senate Markets - US Political Oddsuspoliticalodds.com
  11. 11Colorado State Senate elections, 2026 - Ballotpediaballotpedia.org
  12. 12Colorado State Senate - Ballotpediaballotpedia.org
  13. 132026 Colorado US Senate Forecast | DDHQvotes.decisiondeskhq.com
  14. 142026 Colorado US Senate Live Election Results | DDHQvotes.decisiondeskhq.com

6. How do the policy platforms of John Hickenlooper and Mark Baisley compare on key 2026 voter issues like the economy and immigration?

Hickenlooper's Economic FocusIncreasing housing supply and reducing regulatory hurdles [1][2]
Baisley's Economic FocusPrioritizes tax cuts and rolling back federal regulations [3][4]
Hickenlooper's Immigration StanceSupports DACA protections and a path to citizenship [5][1]
John Hickenlooper and Mark Baisley hold distinct policy positions on key 2026 voter issues, particularly concerning the economy. John Hickenlooper's economic platform prioritizes addressing the cost of living by increasing housing supply and streamlining regulatory processes. His strategy also includes investments in skills training, apprenticeships, clean energy, and infrastructure projects to stimulate job growth [1][2]. In contrast, Mark Baisley advocates for economic prosperity through strengthening the private sector. His approach includes reducing taxes, rescinding federal regulations, and re-establishing American energy independence [3][4].
Immigration policy also reveals distinct approaches from both candidates. John Hickenlooper supports a modern immigration system that balances national security with family unity and labor requirements. This includes protecting DACA recipients and offering a path to citizenship, along with an expressed desire to replace ICE with an alternative agency [5][1]. Conversely, Mark Baisley emphasizes secure national borders and a legal immigration system focused on self-reliance and assimilation. He highlights the importance of vetting legal immigrants for non-violence and their ability to contribute to the economy [3].
Sources (5)
  1. 1Housing, healthcare need less red tape to lower costs: Hickenloopercnbc.com
  2. 2John Hickenlooper - Ballotpediaballotpedia.org
  3. 3issues - Mark Baisley for United States Senatebaisleyforsenate.com
  4. 4Mark Baisley for United States Senatebaisleyforsenate.com
  5. 5Where John Hickenlooper, Julie Gonzales stand on the issues in...coloradosun.com

7. What is the potential impact of Forward Party candidate Bob Chew's self-funded campaign on the 2026 general election outcome?

Total Receipts$1,270,007 (between March 2026 and June 2026) [1][2]
Cash on HandOver $1 million (as of July 2026) [3][4]
Election Year2026 U.S. Senate election in Colorado [3][5][6][7]
Robert Chew's self-funded campaign targets the 2026 Colorado U.S. Senate election. As a registered candidate representing the Colorado Forward Party, Robert (Bob) Chew is vying for a U.S. Senate seat in 2026 [5][6][7]. His campaign has been distinguished by a significant personal financial commitment, having self-funded over $1.2 million as of July 2026 [3][4]. Federal Election Commission data for his committee, "BOB CHEW FOR SENATE," indicates total receipts of $1,270,007 raised between March and June 2026 [1][2].
Chew positions himself as an independent alternative in a crowded race. He has reported over $1 million in cash on hand, signaling his intent to compete statewide [3][4]. His campaign strategy focuses on presenting himself as a viable independent alternative to the major parties, seeking to disrupt the established two-party system [4]. Chew is part of a competitive field that includes Democratic incumbent John Hickenlooper and Republican challenger Mark Baisley [7].
The impact of Chew's campaign on election results is unclear. While Chew's campaign demonstrates significant financial commitment, the available research does not provide specific consensus or public polling data regarding his probability of winning the 2026 Colorado Senate election [6][8]. Consequently, the potential impact of his self-funded campaign on the election outcome, beyond his stated intentions, cannot be determined from the provided facts [3][4][6][8].
Sources (8)
  1. 1BOB CHEW FOR SENATE - committee overview | FECfec.gov
  2. 2CHEW, BOB - Candidate overview | FECfec.gov
  3. 3Forward Party nominee for Colorado's U.S. Senate seat puts $1.1...coloradopolitics.com
  4. 4Robert Chew - United States Senate Candidate - LinkedInlinkedin.com
  5. 5Robert Chew - Ballotpediaballotpedia.org
  6. 6United States Senate election in Colorado, 2026 - Ballotpediaballotpedia.org
  7. 7Julie Gonzales - Ballotpediaballotpedia.org
  8. 82026 United States Senate election in Colorado - Wikipediaen.wikipedia.org

8. Which polling organizations are expected to release public surveys for the Colorado U.S. Senate race between August and November 2026?

Projected Winner Probability97% for John Hickenlooper (D) as of September 2026 [1][2]
Race RatingSafe Democratic [1][2]
Projected MarginD+20 [1][2]
Typical polling organizations are expected, but no firm schedule exists. Specific polling organizations generally anticipated to release surveys for the Colorado U.S. Senate race between August and November 2026 include national pollsters such as Emerson College, YouGov, and Quinnipiac, along with local outlets like The Colorado Sun/SurveyUSA [3]. However, no exclusive schedule of upcoming poll releases is publicly guaranteed for this specific election [3].
Democratic incumbent John Hickenlooper is heavily favored to win. The 2026 Colorado U.S. Senate general election features incumbent Democrat John Hickenlooper against Republican nominee Mark Baisley [4]. As of September 2026, Decision Desk HQ currently projects Democratic incumbent John Hickenlooper to win the 2026 Colorado U.S. Senate race with a 97% probability [1][2]. This contest is rated as 'Safe Democratic' by Decision Desk HQ, with a projected margin of D+20 [1][2].
Prediction markets integrate into forecasts for the Senate race. Prediction markets, such as Polymarket and Robinhood, maintain active contracts for the 'Colorado Senate winner,' with the Democratic candidate currently heavily favored [5]. These prediction markets are being integrated into the Decision Desk HQ election forecasting models for the 2026 Colorado Senate race [1][6][7][2].
Sources (7)
  1. 12026 Colorado US Senate Forecast | DDHQvotes.decisiondeskhq.com
  2. 22026 Colorado US Senate Forecast | DDHQnewsnation-votes.decisiondeskhq.com
  3. 3Colorado U.S. Senate Election 2026: Latest Pollsnytimes.com
  4. 42026 United States Senate election in Colorado - Wikipediaen.wikipedia.org
  5. 5Colorado Senate Election Winner - Polymarketpolymarket.com
  6. 62026 Colorado US Senate Marketsnewsnation-votes.decisiondeskhq.com
  7. 72026 Colorado US Senate Marketsvotes.decisiondeskhq.com

9. What polling data and historical election results underpin prediction markets' >90% probability for a John Hickenlooper victory in 2026?

Hickenlooper Win Probability97% (Decision Desk HQ forecast model) [1][2]
Hickenlooper Fundraising$10.2 million (as of September 1, 2026) [3][4][5][1][2]
Baisley Fundraising$110,001 (as of September 1, 2026) [3][4][5][1][2]
John Hickenlooper is highly favored to win the 2026 Colorado Senate election. Prediction markets show a probability exceeding 90% for his victory, primarily attributed to his status as a well-funded incumbent and Colorado's consistent Democratic-leaning electoral history [3][1][2]. Political analysts consistently rate the seat as "Solid D," reflecting the state's historical voting patterns [3][4]. Forecast models, integrating polling data such as a D+5.9 generic congressional ballot, further project a significant D+20 margin for the race [3][4].
Hickenlooper holds a substantial financial advantage and strong forecast model support. He has secured his renomination and raised over $10.2 million as of September 1, 2026, significantly surpassing Republican challenger Mark Baisley's $110,001 [3][4][5][1][2]. The Decision Desk HQ forecast model, which integrates factors including partisan baseline, incumbency, and campaign financials, assigns Hickenlooper a 97% win probability [1][2]. The presence of a third-party candidate, Bob Chew of the Forward Party, is expected to potentially draw votes from the Republican base rather than posing a threat to Hickenlooper's campaign [3].
Sources (5)
  1. 12026 Colorado US Senate Forecastvotes.decisiondeskhq.com
  2. 22026 Colorado US Senate Forecast | DDHQnewsnation-votes.decisiondeskhq.com
  3. 3Democratic Party Hits 95% in Colorado Senate Race as Opposition Fractures | Prediction Huntpredictionhunt.com
  4. 42026 United States Senate election in Colorado - Wikipediaen.wikipedia.org
  5. 5Incumbent Sen. John Hickenlooper defeats challenger Julie...cpr.org

10. What Could Change the Odds

Key Catalysts

National prediction markets for US Senate control remain extremely close as of September 9, 2026, with Democrats recently reaching approximately 51% probability of controlling the Senate in some markets [1]. Recent pricing fluctuations have been driven by geopolitical events, such as US military action in Iran, and specific race dynamics, including the Texas Republican primary [1].
Key upcoming catalysts for Senate prediction markets include the Federal Reserve's September 15-16 meeting [2][1], the October 1 federal spending deadline which carries a potential government shutdown risk [2][1], and the October 15 candidate fundraising report filings [2][1].

Key Dates & Catalysts

  • Expiration: November 03, 2027
  • Closes: November 03, 2027
Sources (2)
  1. 1Democrats Flip Senate Odds to 51% Linked to Iran | Lines.comlines.com
  2. 2Polymarket 2026 Senate odds: are Democrats at 42¢ value? - The Fair Stakethefairstake.com