Short Answer

Both the model and the market expect Democrats to win Colorado's 5th District by 2 or more points, with no compelling evidence of mispricing.

1. Market Behavior & Drivers

This prediction market has experienced a significant upward trend, with the contract price rising from a low of 2.0% to a current level of 27.0%. The most dramatic movement was a 16.0 percentage point spike on May 06, 2026. This sharp increase is attributed to the release of an NPR poll which reported a national +10 generic ballot advantage for Democrats. According to the provided context, this shift in the national mood, influenced by external events, directly caused traders to re-evaluate the likelihood of a smaller Republican margin of victory in Colorado's 5th District, causing the price to jump.
The price has since stabilized, establishing a new support level around 26.0% and a current ceiling at 27.0%, a price point it has maintained for several days. Total volume stands at 1,985 contracts, though the sample data indicates that the major price repricing on May 06 may have occurred on low volume, suggesting the market adjusted rapidly to new information rather than through a high-volume trading frenzy. The overall price action indicates a major shift in market sentiment. Initially, traders saw a narrow margin of victory as a very low-probability event. Now, the market has priced in a much higher chance, reflecting the belief that national political headwinds for Republicans could significantly impact the outcome in this otherwise Republican-leaning district.
  • Republican margins in the district have steadily decreased since 2020.
  • A proposed 2026 redistricting initiative may reshape the district's partisan lean.
  • An internal poll in November 2025 indicated a competitive toss-up race.
  • Democratic challengers appear to have strong, competitive fundraising for 2026.
  • Unaffiliated voters now form a clear majority in El Paso County.
  • The district's Cook PVI appears reduced to R+5, indicating a tighter race.

Who Wins and Why

Outcome Market Model Why
Democrats, 8+ pts 8.4% 8.6% An internal poll suggesting a toss-up and DCCC targeting point to a more competitive race.
Democrats, 5+ pts 18.0% 17.9% A reduced Cook PVI to R+5 and strong Democratic fundraising suggest a much tighter race.
Democrats, 2+ pts 27.0% 26.8% The consistent trend of narrowing Republican margins indicates a significantly tighter race.

Current Context

Colorado's 5th Congressional District demonstrated a clear Republican preference in 2024. Jeff Crank, the Republican candidate, secured victory with 54.7% of the vote against Democrat River Gassen, who received 40.9%, resulting in an approximately 14-point margin from a total of 362,000 votes [1]. The district's political lean, as measured by the Cook Partisan Voter Index (PVI), is R+5 based on 2024/2020 presidential results, which represents a decrease from its prior R+9 rating [2][3]. Incumbent Crank, first elected in 2024, has already amassed $2.3 million in campaign funds by March 2026, according to FEC reports [2].
The 2026 election outlook for CO-05 involves key dates and political developments. The primaries are scheduled for June 30, 2026, and as of now, no major Democratic challenger has been named [2]. A significant factor that could influence future elections is a redistricting ballot effort, funded by a group allied with Democratic leadership in the US House, which aims to redraw Colorado’s congressional maps post-2026 [4]. Prediction markets reflect a degree of uncertainty, with a Democratic win implied at 35% on Lines.com, while other platforms suggest a 65% implied probability for a Republican victory. Kalshi specifically offers contracts related to the CO-05 margin of victory [5][6][7][8].
Sources (8)
  1. 1Colorado House District 5 Election 2024 Live Resultsnbcnews.com
  2. 2Colorado's 5th Congressional District election, 2026 - Ballotpediaballotpedia.org
  3. 3CO-05 2026 | Cook Political Reportcookpolitical.com
  4. 4Group tied to Democratic leadership in US House is funding attempt to redraw Colorado’s congressional map - The Colorado Suncoloradosun.com
  5. 5Colorado's 5th District margin of victory Odds & Predictions - Kalshikalshi.com
  6. 6Will a Democrat Win Colorado's 5th Congressional District in 2026?lines.com
  7. 7CO-05 House Election Winner Predictions & Odds | Polymarketpolymarket.com
  8. 8Colorado's 5th District margin of victory Odds & Predictionskalshi.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: 16.0pp spike

Price increased from 10.0% to 26.0%

Outcome: Democrats, 2+ pts

What happened: The primary driver of the price spike was the release of an NPR poll on May 06, 2026, which reported a national +10 generic ballot advantage for Democrats [1]. This significant shift in national sentiment, attributed to rising gas prices and former President Trump's handling of an Iran conflict, directly coincided with the market movement [1]. Given CO-05's trending left and the Democratic Party's increased targeting of the district, this national polling boost made a "Democrats, 2+ pts" outcome more plausible [2][3][4]. Social media was not a primary driver, as no relevant activity was identified in the provided information.
Sources (4)
  1. 1Poll: Trump approval drops, Democrats gain midterm edge: NPRnpr.org
  2. 2CO-05 2026 | Cook Political Reportcookpolitical.com
  3. 3Is Colorado's 5th Congressional District in play for Democrats?preprod.denverpost.com
  4. 4National Democrats add Republican Jeff Crank in Colorado’s 5th CD to list of targeted GOP-held seats - Colorado Politicscoloradopolitics.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 5th District by a margin of 2 percentage points or more; otherwise, it resolves to "No." The margin is calculated by subtracting the vote percentage of the trailing candidate/party from the Democratic Party's vote percentage, with no rounding applied (2.0% is the minimum for a "Yes" resolution). The market begins on May 5, 2026, and will close upon the publication of certified election results (or by November 3, 2027, if not earlier), with payouts projected 30 minutes after closing.

Available Contracts

Market options and current pricing

Outcome bucket Yes (price) No (price) Last trade probability
Democrats, 2+ pts $0.27 $0.74 27%
Democrats, 5+ pts $0.18 $0.83 18%
Democrats, 8+ pts $0.13 $0.92 8%

Market Discussion

Colorado's 5th District is widely considered a Republican-leaning district, evidenced by its R+5 PVI and Jeff Crank's 13.8-point victory in 2024 [1][2][3]. The Cook Political Report rates the district as "Likely R" as of January 2026, with Crank having raised $1.7M for the upcoming election [4]. While prediction markets feature specific margin of victory options, some snapshots for the 2026 winner suggest a strong Republican lead (65% Rep), while others indicate a potentially closer race (47% Dem / 44% Rep) [5][6][7][8].

Sources (8)
  1. 1Colorado 5th District election results 2024 live updates | The Washington Postwashingtonpost.com
  2. 2Colorado's 5th Congressional District election, 2024 - Ballotpediaballotpedia.org
  3. 3Colorado's 5th Congressional District election, 2026 (June 30 Republican primary) - Ballotpediaballotpedia.org
  4. 4CO-05 2026 | Cook Political Reportcookpolitical.com
  5. 5CO-05 House Election Winner Predictions & Odds | Polymarketpolymarket.com
  6. 6Will a Democrat Win Colorado's 5th Congressional District in 2026?lines.com
  7. 7Colorado's 5th District margin of victory Odds & Predictionskalshi.com
  8. 8Colorado's 5th District margin of victory Odds & Predictions - Kalshikalshi.com

5. Trust Index

Octagon Trust Index Kalshi 71 Good

Order book is critically thin.

Primary risk· Trade quality

How it adds up
Integrity80% of score94Strong
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 score71Good

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 integrity92
Outcome is hard to influenceStrong
Info fairness95
Structural prior — no screens applyStrong
Trade quality5
Order book is critically thinAvoid
Market integrity
92Strong

Outcome is hard to influence

No suspicious activity on any screen

Screened clean
Large tradesNo single trade dominates the tape. Clear
Thin-volume movesNo significant move Clear
Size patternsTape too thin 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
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: 9.8c slippage (~40% of a 24.5c contract)

$1,000 order: book too thin to fill

$10,000 order: book too thin to fill

Killin, 2+ 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 5d

No trades in the last 5d — nothing to confirm

Rule clarity
100 · Clear · high confidence

All checks pass

objective outcome · Clearofficial source · Cleartime boundary · Clear
Killin, 5+ 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 5d

No trades in the last 5d — nothing to confirm

Rule clarity
100 · Clear · high confidence

All checks pass

objective outcome · Clearofficial source · Cleartime boundary · Clear
Killin, 8+ 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 6d

No trades in the last 6d — 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. How might the proposed 2026 redistricting ballot initiative reshape the partisan lean of Colorado's 5th District?

Current CD5 Partisan Split56.1% Republican to 38.9% Democratic (Cook PVI R+5) [1][2][3]
Proposed CD5 Partisan Split52.2% Democratic to 45.0% Republican [3]
Projected Partisan Swing (CD5)Approximately 17-point swing from R to D [3]
Colorado's proposed 2026 redistricting initiative aims to flip Congressional District 5. A Democratic-led ballot initiative seeks to transform the 5th Congressional District (CD5) from Republican to Democratic for the 2028 and 2030 election cycles [3][4]. This effort specifically targets CD5, along with CD3 and CD8, with the goal of shifting these districts' partisan lean through a temporary map [5][6][3].
The proposed map dramatically shifts CD5's partisan lean, which is currently categorized with a Cook PVI of R+5, indicating a partisan vote distribution of 56.1% Republican to 38.9% Democratic [1][2][3]. Under the new map, this balance would shift to 52.2% Democratic and 45.0% Republican, representing an approximate 17-point swing in partisan lean [3]. The district's sitting incumbent, Jeff Crank (R), won the 2024 general election with 54.7% of the vote [1].
The initiative faces a signature deadline and Republican opposition. Formally filed in February 2026, the deadline for signature submission is August 3, 2026 [4][7]. If passed, the new map would exclusively impact the 2028 and 2030 elections [4]. In response, Republicans have introduced their own counter-initiative, #327, proposing a GOP-aligned map, alongside other measures designed to block the Democratic initiative [7].
Sources (7)
  1. 1CO-05 2026 | Cook Political Reportcookpolitical.com
  2. 2Colorado's 5th Congressional District - Ballotpediaballotpedia.org
  3. 3Colorado Joins Redistricting Wars – The ELLIS Insightellisinsight.com
  4. 4Colorado Temporary Congressional Redistricting Map Initiative (2026) - Ballotpediaballotpedia.org
  5. 5Democrats would be favored to flip 3 Colorado congressional seats under new redistricting proposal - The Colorado Suncoloradosun.com
  6. 6National redistricting fight reaches Colorado with ballot measures targeting GOP-held congressional districts - Colorado Politicscoloradopolitics.com
  7. 7Colorado Republicans advance measures to block Democrats' 2028 redistricting plan | Colorado Newslinecoloradonewsline.com

7. What do historical voting patterns in Colorado's 5th District since 2020 indicate for a potential 2026 election margin?

2024 Republican Margin+13.8 points (R-D) (based on 362k total votes) [1][2][3]
2025 Cook PVIR+5 [4][5][6][2][7]
Republican Hold Probability (Prediction Market)65% [8]
Republican margins in Colorado's 5th District have steadily decreased since 2020. In the 2020 election, Republican Doug Lamborn secured a victory with a +20.2-point margin over Democrat Jillian Freeland [9][10]. This margin narrowed to +15.7 points in 2022 when Lamborn defeated Democrat David Torres [11][12]. The trend continued into the 2024 election, where Republican Jeff Crank won by +13.8 points against Democrat River Gassen, based on a total of 362,000 votes [1][2][3]. Overall, the Republican margin of victory in the district decreased by 6.4 points between 2020 and 2024 [10][12][1][3].
The district's partisan lean has shifted, making 2026 a potential target for Democrats. The Cook Partisan Voting Index (Cook PVI℠) for the district moved from R+9 in 2022 to R+5 for the 2025 Cook PVI℠, positioning it as the 190th most Republican district nationally [4][5][6][2][7]. Looking ahead to the 2026 election, the race is currently rated "Likely R" by the Cook Political Report, and the Democratic Congressional Campaign Committee (DCCC) has designated the district as a target [13][7][14]. A prediction market currently suggests an expected Republican margin of approximately +14 points, with a 65% probability of a Republican hold [8]. The Democratic primary for the 2026 election is scheduled for June 30, 2026 [7][14].
Sources (14)
  1. 1Colorado's 5th Congressional District election, 2024 - Ballotpediaballotpedia.org
  2. 2Colorado's 5th congressional districten.wikipedia.org
  3. 32024 Colorado U.S. House Election Results & Map | The Gleanerthegleaner.com
  4. 4Colorado's 5th Congressional District - Ballotpediaballotpedia.org
  5. 5The 2025 Cook Partisan Voting Index (Cook PVI℠) | Cook Political Reportcookpolitical.com
  6. 6Cook Partisan Voting Indexen.wikipedia.org
  7. 7Colorado's 5th Congressional District election, 2026 - Ballotpediaballotpedia.org
  8. 8Will a Democrat Win Colorado's 5th Congressional District in 2026?lines.com
  9. 92020 Colorado U.S. House Election Results & Map | The Spectrumthespectrum.com
  10. 10Colorado's 5th Congressional District election, 2020 - Ballotpediaballotpedia.org
  11. 112022 Colorado U.S. House Election Results & Map | Tallahassee Democrattallahassee.com
  12. 12Colorado's 5th Congressional District election, 2022 - Ballotpediaballotpedia.org
  13. 13CO-05 2026 | Cook Political Reportcookpolitical.com
  14. 14Is Colorado's 5th Congressional District in play for Democrats?preprod.denverpost.com

8. How does Rep. Jeff Crank's fundraising through Q2 2026 compare to his 2024 cycle and that of Democratic challengers in similar R+5 districts?

Rep. Jeff Crank Total Receipts$1.74M through Q1 2026 [1][2]
CO-05 District PVIR+5 PVI [3][4]
Jessica Killin Cash on Hand$1.1 million entering 2026 [5]
Rep. Jeff Crank demonstrates significant fundraising growth for the 2026 election cycle. Through the first quarter of 2026, he reported $1.74 million in total receipts, which includes $1.37 million in contributions. This performance represents a substantial increase compared to the $302,000 he raised throughout the entire 2024 cycle [1][2]. Crank's campaign also spent $640,000 during Q1 2026. His district, Colorado's 5th congressional district (CO-05), is rated R+5 PVI, where Crank secured a 14-point victory in 2024 [3][4][2].
Democratic challengers, including in CO-05, show strong competitive fundraising trends. In Crank's district, Democratic challenger Jessica Killin raised $611,000 in Q4 2025, with $257,000 of that being self-funded [3][6]. Killin entered 2026 with $1.1 million cash on hand, surpassing Crank's $968,000 cash on hand for the same period [5]. This competitive trend extends to other R+5 or otherwise competitive Republican districts, where Democratic challengers are reportedly outraising GOP incumbents. Examples include Rebecca Cooke in Wisconsin's 3rd congressional district (WI-3) with $2.4 million in Q1, as well as candidates in Iowa's 3rd district (IA-3) and Arizona's 6th district (AZ-6), each raising $1.7 million and $2.4 million respectively in Q1 [7][8]. This broader pattern indicates that Democrats are competitive or leading in fundraising efforts across several key target races [9][10].
Sources (10)
  1. 1Jeff Crank - Ballotpediaballotpedia.org
  2. 2CRANK, JEFF - Candidate overview | FECfec.gov
  3. 3Rep. Lauren Boebert heavily outraised at end of 2025denverpost.com
  4. 42026 United States House of Representatives election ratingsen.wikipedia.org
  5. 5FOR IMMEDIATE RELEASE: Democrat Jessica Killin heads into 2026 with a record-breaking total of more than $1.1 million cash on handmailchi.mp
  6. 6FOR IMMEDIATE RELEASE: Jessica Killin Sets New Fundraising Record in CO-05mailchi.mp
  7. 7Rebecca Cooke again outraises US Rep. Derrick Van Orden in pivotal Wisconsin House race - WPRwpr.org
  8. 8Democrats Are Dominating the Fundraising Race in Critical Congressional Contests - NOTUS — News of the United Statesnotus.org
  9. 9The Downballot's 1Q 2026 Senate and House fundraising reports roundupthe-downballot.com
  10. 10Democratic candidates start 2026 with a fundraising bang – Roll Callrollcall.com

9. How do the latest voter registration trends by party in El Paso County compare to the 2024 and 2022 election cycles?

Unaffiliated Voter Share52.46% (March 23, 2026) [1]
Total Active Voters501,336 (March 23, 2026) [1]
Republican Voter Share28.46% (March 23, 2026) [1]
Unaffiliated voters now form a clear majority in El Paso County. As of March 23, 2026, Una ffiliated voters constitute 52.46% of the active electorate in El Paso County, totaling 263,013 out of 501,336 registered voters [1]. This represents a steady increase, surpassing 50% in early 2024, and rising from 50.52% in October 2024 and approximately 47% in November 2022 [1][2][3].
Major parties have seen their voter share decline amidst overall growth. While El Paso County has experienced an overall increase in total voter numbers, both the Republican and Democratic parties have seen a decrease in their percentage share of registered voters [1][2][3]. The Republican Party (GOP) now accounts for 28.46% of voters, a decline from 29.71% in October 2024 and about 32% in November 2022 [1][3][2]. Similarly, Democratic voters comprise 16.38% as of March 2026, which is a decrease from 17.3% in October 2024 and around 19% in November 2022 [1][3][2].
Sources (3)
  1. 1Resources and Registered Voters Data - El Paso County Clerk and Recorderclerkandrecorder.elpasoco.com
  2. 2Unaffiliated voters in El Paso County claim the majoritygazette.com
  3. 3Number of unaffiliated voters in Colorado has hit a record high— here's one key reason why - Colorado Springs Gazettegazette.com

10. What polling data or campaign developments could explain the May 2026 price spike on prediction markets for a Democratic win?

Cook PVI for CD-5R+5 [1]
2024 Election Result (Crank)54.7% [1][2]
Primary Election DateJune 30, 2026 [2]
Democratic redistricting efforts likely caused a May 2026 prediction market spike. A significant price spike on prediction markets in May 2026, indicating a higher probability of a Democratic victory in Colorado's 5th District (CD-5), was specifically linked to a Democratic-funded redistricting proposal reported on May 5, 2026 [3]. This proposal is designed to favor a Democratic pickup in CD-5 for the 2028 map [3].
Earlier market activity and district fundamentals set the stage. Prior to this May surge, the market had also experienced a spike in late April 2026, which was associated with a Cook 'Likely R' shift [4]. Colorado's 5th District currently holds a Cook PVI of R+5, and the incumbent, Republican Crank, secured a win in the 2024 election with 54.7% of the vote [1][2]. The primary election for this district is scheduled for June 30, 2026 [2].
Internal polling in late 2025 indicated a competitive race. While there was no direct polling data from May 2026 to explain the recent market surge, an internal poll conducted in October/November 2025 for Democratic challenger Jessica Killin showed the race as a toss-up [5][6]. This poll indicated Killin leading 41-39 after messages, reversing an initial lead for Crank at 43-40 [5][6].
Sources (6)
  1. 1CO-05 2026 | Cook Political Reportcookpolitical.com
  2. 2Colorado's 5th Congressional District election, 2026 - Ballotpediaballotpedia.org
  3. 3Group tied to Democratic leadership in US House is funding attempt to redraw Colorado’s congressional map - The Colorado Suncoloradosun.com
  4. 4Will a Democrat Win Colorado's 5th Congressional District in 2026?lines.com
  5. 5New Poll Shows Colorado’s 5th Congressional District is a Toss-Upkillinforcolorado.com
  6. 6Jeff Crank challenger Jessica Killin's internal poll shows toss-up race in Colorado's 5th CD - Colorado Politicscoloradopolitics.com

11. What Could Change the Odds

Key Catalysts

An internal poll for Democratic challenger Jessica Killin in November 2025 indicated a competitive race, showing incumbent Jeff Crank at 43%, Killin at 40%, and an independent candidate at 5%, with a margin of error of 4.6% [1]. Killin's campaign also reported raising over $1.6M by December 2025, exceeding Crank's $1.2M [2]. Despite the district's R+9 PVI, it is identified as the fastest Dem-trending district [3].
Further indicating a potentially shifting landscape, the DCCC added CO-05 to its "Districts in Play" in February 2026, referencing Jeff Crank's record on costs and healthcare [4]. The district was rated Likely R as of January 2026 [3]. These factors could influence market probabilities ahead of the primary on June 30, 2026, and the general election on November 3, 2026 [5].

Key Dates & Catalysts

  • Expiration: November 03, 2027
  • Closes: November 03, 2027
Sources (5)
  1. 1Jeff Crank challenger Jessica Killin's internal poll shows toss-up race in Colorado's 5th CD - Colorado Politicscoloradopolitics.com
  2. 2Is Colorado's 5th Congressional District in play for Democrats?canoncitydailyrecord.com
  3. 3CO-05 2026 | Cook Political Reportcookpolitical.com
  4. 4DCCC Adds CO-05 To Districts In Play As Democrats Further Expand Battlefield for 2026 Midterms - DCCCdccc.org
  5. 5Colorado's 5th Congressional District election, 2026 - Ballotpediaballotpedia.org