Short Answer

Both the model and the market expect Democrats to win Colorado's 3rd District by 3 or more points, with no compelling evidence of mispricing.

1. Market Behavior & Drivers

This market has shown a significant upward trend, moving from a low of 2.0% to its current price of 25.0%. The most prominent price action was a sharp 10.0 percentage point spike on May 06, 2026, which saw the probability jump from 15.0% to 25.0%. According to the provided context, this increase likely stemmed from the release of a national generic ballot poll that showed a significant advantage for Democrats. This suggests that traders reacted to national-level political sentiment and extrapolated its potential impact on this specific district race, even though the district is described as strongly Republican.
The total volume of 1,607 contracts indicates a moderate level of interest in the market over its lifetime. However, the sample data shows no volume during the recent price spike, which could suggest the move was initiated by a few traders or that broader market conviction has not yet solidified at this new level. The price of 25.0% has acted as a point of resistance or consolidation since the spike. Overall, the chart reflects a marked shift in market sentiment. While the market initially priced in a very low probability, in line with the district's partisan lean, the recent surge suggests a growing perception that the race may become more competitive, driven by external political factors.
  • Incumbent Jeff Hurd maintains a substantial financial lead over Democratic challengers.
  • Non-partisan forecasters like Cook and Sabato's rate CO-03 "Likely Republican."
  • Jeff Hurd won the 2024 general election by a 5.0 point margin.
  • Hurd's potential vulnerability in the Republican primary appears a key factor.
  • Early polling data suggests a competitive 2026 general election in Colorado's 3rd.

Who Wins and Why

Outcome Market Model Why
Democrats, 3+ pts 25.0% 19.2% A Democratic victory exceeding three points faces headwinds from the R+5 PVI and incumbent's strong support.
Democrats, 6+ pts 14.0% 10.8% A Democratic victory exceeding six points faces substantial headwinds from the R+5 PVI and incumbent's strong support.

Current Context

Jeff Hurd won Colorado's 3rd District by a 5.0-point margin in 2024. In the 2024 election, Republican Jeff Hurd secured 50.8% of the vote with 201,951 votes, defeating Democrat Adam Frisch, who received 45.8% with 182,147 votes. This resulted in a margin of 19,804 votes, equivalent to 5.0 percentage points [1]. Colorado's 3rd Congressional District is identified as the most Republican nationally, based on 2020 election results [2]. Current prediction market odds indicate Republicans at 57% and Democrats at 33% for the general election [3].
Hurd has solidified his position for the upcoming 2026 election cycle. The primaries for 2026 are scheduled for June 30, 2026, and the general election will be held on November 3, 2026 [2]. In March 2026, Jeff Hurd received a re-endorsement from Donald Trump, which led to primary challenger Scheppelman exiting the race [4]. Financially, Hurd has raised a total of $3 million and held $1.9 million in cash on hand as of April 2026 [5].
Sources (5)
  1. 1Colorado's 3rd Congressional District election, 2024 - Ballotpediaballotpedia.org
  2. 2Colorado's 3rd Congressional District election, 2026 - Ballotpediaballotpedia.org
  3. 3CO-03 House Election Winner Predictions & Odds | Polymarketworldcoin.polymarket.com
  4. 4Trump re-endorses U.S. Rep. Jeff Hurd, convinces Republican primary challenger to drop out, in another shakeup for western Colorado race | AspenTimes.comaspentimes.com
  5. 5Colorado Democratic House challengers rake in cash, but contested primaries loom | Colorado Newslinecoloradonewsline.com

2. Price Chart

Historical Price (Probability)

Outcome probability
Date

3. Significant Price Movements

Notable price changes detected in the chart, along with research into what caused each movement.

📈 May 06, 2026: 10.0pp spike

Price increased from 15.0% to 25.0%

Outcome: Democrats, 3+ pts

What happened: The 10.0 percentage point spike likely stemmed from an NPR national generic ballot poll released on May 06, 2026, indicating Democrats held a +10 percentage point advantage nationally due to factors like gas prices and Trump's unpopularity [1][2]. This national sentiment appears to have fueled a belief among traders that Democrats might perform exceptionally well across the board, including in Republican-leaning districts like CO-03 [3][4]. However, there is no evidence of specific CO-03 polling or social media activity on that date predicting a Democratic 3+ point victory in this particular district [5]. Social media was irrelevant, as there is no provided evidence of relevant posts driving this specific market move.
Sources (5)
  1. 1Democrats gain midterm edge, NPR poll shows. And, U.S. pauses 'Project Freedom' | KUNCkunc.org
  2. 2Poll: Trump blamed for gas prices as Democrats gain midterm edge | KUNCkunc.org
  3. 3Colorado's 3rd Congressional District - Ballotpediaballotpedia.org
  4. 4Colorado's 3rd Congressional District election, 2026 - Ballotpediaballotpedia.org
  5. 5CO-03 2026 | Cook Political Reportcookpolitical.com

4. Market Data

Contract Snapshot

This market resolves to YES if the Democratic Party wins the 2026 U.S. House of Representatives election in Colorado's 3rd District by a margin of 3 percentage points or more, calculated without rounding from official election results. It resolves to NO if the Democratic Party wins by less than 3 percentage points, ties, or loses the election. The election is scheduled for November 3, 2026, and the market will close upon the publication of certified election results, but no later than November 3, 2027, 11:00 am EDT.

Available Contracts

Market options and current pricing

Outcome bucket Yes (price) No (price) Last trade probability
Democrats, 3+ pts $0.26 $0.75 25%
Democrats, 6+ pts $0.15 $0.86 14%

Market Discussion

Republican Jeff Hurd won Colorado's 3rd Congressional District election against Democrat Adam Frisch by a margin of 19,804 votes, or 5.0 percentage points (pp), with Hurd receiving 50.8% to Frisch's 45.8% of the 397,553 total votes cast [1][2]. This margin of victory for Hurd, with the race called on December 6, 2024, was notably larger than the 0.2 pp margin in the 2022 race between the incumbent and Frisch [1][2], and was consistent with pre-election predictions that favored Republicans for Hurd at 57-62% [3].

Sources (3)
  1. 1Colorado 3rd District election results 2024 live updates | The Washington Postwashingtonpost.com
  2. 2Colorado's 3rd Congressional District election, 2024 - Ballotpediaballotpedia.org
  3. 3CO-03 House Election Winner Predictions & Odds | Polymarketworldcoin.polymarket.com

5. Trust Index

Octagon Trust Index Kalshi 72 Good

Order book is critically thin.

Primary risk· Trade quality

How it adds up
Integrity80% of score95Strong
Trade quality20% of score5Avoid

Includes the cost to trade: a $1,000 order can't be filled here because the order book is too thin.

Trust score72Good

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
Market integrity95
Structural prior — no screens applyStrong
Info fairness95
Structural prior — no screens applyStrong
Trade quality5
Order book is critically thinAvoid
Market integrity
95Strong

Structural prior — no screens apply

No suspicious activity on any screen

Screened clean
Thin-volume movesNo significant move Clear
4 screens not run
Outcome control · doesn't apply to this market type
Thin-leg conviction · doesn't apply to this market type
Large trades · data source not connected
Size patterns · data source not connected
Info fairness
95Strong

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
Trade quality
5Avoid

Order book is critically thin

Thin market — entering or exiting at fair value will be difficult.

Liquidity unreadable

No significant moves to grade

$100 order: 18.9c slippage (~94% of a 20c contract)

$1,000 order: book too thin to fill

$10,000 order: book too thin to fill

Romero, 3+ pts–Market scoreLiquidity–Move quality–Rule clarity100
Why this score
Liquidity
No recent trading to measure

No recent trading to measure

Move quality
No trading in 4d

No trades in the last 4d — nothing to confirm

Rule clarity
100 · Clear · high confidence

All checks pass

objective outcome · Clearofficial source · Cleartime boundary · Clear
Romero, 6+ pts–Market scoreLiquidity–Move quality–Rule clarity100
Why this score
Liquidity
No recent trading to measure

No recent trading to measure

Move quality
No trading in 4d

No trades in the last 4d — nothing to confirm

Rule clarity
100 · Clear · high confidence

All checks pass

objective outcome · Clearofficial source · Cleartime boundary · Clear

underwriting_v1.4 · computed Sep 23, 2026

6. What do voter registration trends in Colorado's 3rd District since the 2024 election indicate about a potential shift in the electorate?

Democratic Active Voters (April 2026)1,003,187 (down 3.7% since 2024) [1]
Republican Active Voters (April 2026)910,438 (down 1.7% since 2024) [1]
Unaffiliated Active Voters (April 2026)2,032,366 [1]
Colorado voter registration shows a notable shift since 2024. Since the 2024 election, Colorado has experienced a decline in both Democratic and Republican party affiliations statewide, alongside a significant surge in unaffiliated voters. By April 2026, active Democratic voters decreased by 3.7% to 1,003,187, while active Republican voters saw a 1.7% decline, reaching 910,438. In stark contrast, active unaffiliated voters climbed to 2,032,366 during the same period, now constituting the largest bloc across all eight Colorado congressional districts [1][2][3].
Unaffiliated voter growth is particularly strong among younger demographics. Statewide, unaffiliated voters experienced a 3.1% growth between January and July 2025, adding approximately 60,000 new voters [2]. This trend is also pronounced among younger individuals; the 18-24 age group has seen a 16% reduction in both Democratic and Republican registrations since 2024, while unaffiliated registrations within this group increased by 10% [1]. Although Colorado's 3rd Congressional District has a Cook PVI of R+5, specific numerical changes for this particular district were not provided in the available data [4]. However, the statewide patterns of declining partisan affiliation and increasing unaffiliated voters are consistent across all eight congressional districts, including the 3rd [1][2][3].
Sources (4)
  1. 1The uncharted implications of increasing unaffiliateds ahead of Colorado's primaries | Paula Noonan - Colorado Politicscoloradopolitics.com
  2. 2Colorado sees surge in unaffiliated voters, decline in party registrationssentinelcolorado.com
  3. 3Unaffiliated voters are the biggest bloc in every Colorado congressional districtcoloradosun.com
  4. 4Colorado's 3rd Congressional District - Ballotpediaballotpedia.org

7. How might the outcome of the June 30, 2026 Democratic primary affect general election polling and fundraising against Jeff Hurd?

Alex Kelloff Delegate Support51% [1]
Jeff Hurd Total Raised$2.99M in 2026 [2][3]
District PVIR+5 [4][3]
The Democratic primary presents a close contest influencing future Democratic efforts. Alex Kelloff has secured 51% of delegates and raised over $1 million, while Dwayne Romero, a veteran, holds 49% of delegates [1][5][6]. A victory for Kelloff in the June 30, 2026 primary is expected to boost Democratic polling and fundraising more significantly than a win for Romero, primarily due to Kelloff's existing resources and head start [7][6][8].
Incumbent Republican Jeff Hurd holds a strong financial and electoral position. Hurd has demonstrated substantial financial standing, having raised $2.99 million in 2026 and maintaining $1.9 million cash-on-hand as of March 2026 [2][3]. The district, with a PVI of R+5, saw Hurd secure a 5-point victory in 2024, the same year Donald Trump won by 10 points [3][4]. This context leads the Cook Political Report to rate the race as "Likely R," and Polymarket predicts a Republican win with a 57-62% probability [4][9].
Sources (9)
  1. 1Colorado Democrats select 2026 CO-3 primary candidateschieftain.com
  2. 2Jeff Hurd - Ballotpediaballotpedia.org
  3. 3Colorado's 3rd Congressional District election, 2026 (June 30 Republican primary) - Ballotpediaballotpedia.org
  4. 4CO-03 2026 | Cook Political Reportcookpolitical.com
  5. 52 Roaring Fork Valley candidatespunch tickets to congressional primary – The Sopris Sunsoprissun.com
  6. 6Democratic primary to unseat Republican Rep. Jeff Hurd in western Colorado turns competitive  | AspenTimes.comaspentimes.com
  7. 7Dwayne Romero enters Democratic primary in 3rd Congressional Districtdenverpost.com
  8. 8Pitkin County Democratic Party delegates majority support Alex Kelloff | AspenTimes.comaspentimes.com
  9. 9CO-03 House Election Winner Predictions & Odds | Polymarketworldcoin.polymarket.com

8. How does the fundraising and cash-on-hand of the leading Democratic candidate compare to that of incumbent Jeff Hurd for the 2026 election cycle?

Jeff Hurd Total Raised$2,386,940 (February 2026) [1]
Alex Kelloff Total Raised$855,170 (February 2026) [1]
Jeff Hurd Cash on Hand$2,158,638 (February 2026) [1]
Incumbent Jeff Hurd holds a substantial financial lead over Democratic challengers. As of February 2026, Hurd had accumulated $2,386,940 in total fundraising and maintained $2,158,638 in cash on hand [1]. This robust financial standing positions him well ahead of the current leading Democratic fundraiser. Hurd's fundraising total is approximately 2.8 times greater than that of Alex Kelloff, and his cash on hand is roughly 3.5 times larger [1].
Alex Kelloff leads Democratic primary fundraising, yet trails the incumbent significantly. Kelloff, the current frontrunner among Democratic candidates in fundraising, had raised $855,170 and reported $613,518 in cash on hand as of February 2026 [1]. His first-quarter 2026 fundraising included $73,000 in contributions, supplemented by a $120,000 loan to his campaign [2]. Another Democratic candidate, Dwayne Romero, who entered the race in March 2026, raised $226,000 in Q1 and contributed a $280,000 loan to his own campaign [2]. The Democratic primary for Colorado's 3rd congressional district is set for June 30, 2026, and a nominee has not yet been chosen as of May 8 [3][4].
Sources (4)
  1. 1Colorado 2026 Federal Campaign Finance: Complete Data Analysis - High Country Advocatehighcountryadvocate.org
  2. 2Colorado Democratic House challengers rake in cash, but contested primaries loom | Colorado Newslinecoloradonewsline.com
  3. 3Colorado Primary Election Results 2026: NPRapps.npr.org
  4. 42 Roaring Fork Valley candidatespunch tickets to congressional primary – The Sopris Sunsoprissun.com

9. What public polling data is available for the Colorado's 3rd District general election matchup for the 2026 cycle, and how reliable has it been historically?

Hurd Polling (March 2026)46% (Ragnar Research) [1]
Kelloff Polling (March 2026)41% (Ragnar Research) [1]
Republican CO-03 House probability~57% (Polymarket) [2]
Early polling data indicates a competitive 2026 general election in CO-03. A Ragnar Research poll, conducted on March 20, 2026, for Colorado's 3rd District general election matchup, showed incumbent Hurd with 46%, Kelloff with 41%, and Other candidates receiving 13% [1]. This survey involved 400 likely voters and had a reported margin of error of +/-5% [1]. While specific information regarding the historical reliability of polling data for Colorado's 3rd District is unavailable, the district has an R+5 Partisan Voter Index [3].
Historical election results show Republican strength within the district. In 2024, incumbent Hurd (R) won with 50.8% of the vote, and former President Trump carried the district by approximately 10 points that same year [4]. The 2026 primaries are scheduled for June 30, with Democratic candidates including Kelloff and Romero, while Republican incumbent Hurd also faces a primary challenge [4]. Current predictions from Polymarket suggest a Republican has approximately a 57% probability of winning the CO-03 House seat in the general election [2].
Sources (4)
  1. 12026 Polls: Colorado House District 3 - 270toWin270towin.com
  2. 2CO-03 House Election Winner Predictions & Odds | Polymarketworldcoin.polymarket.com
  3. 3CO-03 2026 | Cook Political Reportcookpolitical.com
  4. 4Colorado's 3rd Congressional District election, 2026 (June 30 Democratic primary) - Ballotpediaballotpedia.org

10. How do non-partisan election forecasters like the Cook Political Report and Sabato's Crystal Ball rate the competitiveness of Colorado's 3rd District for the 2026 cycle?

Sabato's Crystal Ball 2026 RatingLikely Republican [1][2]
March 2026 Poll (Jeff Hurd)46% [3]
Cook PVIR+5 [4][5]
Colorado's 3rd District is rated "Likely Republican" by Sabato's Crystal Ball. This rating for the 2026 election cycle was updated on May 6, 2026 [1][2]. The district exhibits a strong Republican lean, having supported Donald Trump by nearly 10 points and possessing a Cook Partisan Voting Index (PVI) of R+5 [4][5]. Republican Jeff Hurd first secured election in 2024, obtaining 50.8% of the vote share in CO-03 [4].
Recent polling indicates CO-03 retains some competitiveness. Despite the district's Republican lean and its "Likely Republican" designation, a poll conducted in March 2026 showed Republican Jeff Hurd with 46% support, while Democrat Kelloff garnered 41% [3]. The available facts did not explicitly state The Cook Political Report's specific competitiveness rating for CO-03 for the 2026 cycle.
Sources (5)
  1. 12026 House - Sabato's Crystal Ballcenterforpolitics.org
  2. 2Sabato's Crystal Ball 2026 House Ratings - 270toWin270towin.com
  3. 32026 Polls: Colorado House District 3 - 270toWin270towin.com
  4. 4CO-03 2026 | Cook Political Reportcookpolitical.com
  5. 5Colorado's 3rd Congressional District election, 2026 (June 30 Democratic primary) - Ballotpediaballotpedia.org

11. What Could Change the Odds

Key Catalysts

The CO-03 district is rated as Likely R by Cook as of March 2026, with a Cook PVI implying a Trump +10 margin [1]. Incumbent Jeff Hurd (R) won the CO-03 2024 general election by 5.0 points (201,951 votes 50.8% vs Adam Frisch (D) 45.8%) after securing 41% in a crowded primary [1][2]. However, Hurd's potential vulnerability in the primary is a key factor; as of Feb 2026, Polymarket shows Hurd's GOP primary odds at 50% against Hope Scheppelman at 41% [3][4][5][6].
Upcoming election dates represent critical catalysts that could shift market probabilities. The filing deadline is approximately March 17, 2026, leading to the primary on June 30, 2026, and the general election on November 3, 2026 [7]. These events will directly impact the current market sentiment, which indicates a Polymarket GOP general win at approximately 57-70% [3][4][5]. Kalshi markets are also tracking the party winner and margin of victory, such as Republican by 3+ points or Democrat by 3+ points [8][9][10].

Key Dates & Catalysts

  • Expiration: November 03, 2027
  • Closes: November 03, 2027
Sources (10)
  1. 1CO-03 2026 | Cook Political Reportcookpolitical.com
  2. 2Polidex — Live Election Forecaststhepolidex.com
  3. 3Polymarket Odds: CO-03 House Election Winner (AI Predictions)polychances.com
  4. 4CO-03 House Election Winner Predictions & Odds | Polymarketworldcoin.polymarket.com
  5. 5CO-03 Republican Primary Winner Predictions & Odds | Polymarketbase.polymarket.com
  6. 6Colorado District 3 Republican Primary Dynamics Explainedhopeforcolorado.com
  7. 7Colorado's 3rd Congressional District election, 2026 - Ballotpediaballotpedia.org
  8. 8Colorado's 3rd District margin of victory Odds & Predictions - Kalshikalshi.com
  9. 9Colorado's 3rd District margin of victory Odds & Predictions - Kalshikalshi.com
  10. 10Which party will win the House race for CO-03? Odds & Predictions 2026kalshi.com