Short Answer

The model sees potential mispricing regarding the FL-13 House winner, with the Republican party as the most likely outcome. The model assigns significantly higher odds to the Republican party at 84.2% compared to the market's 73.0%.

1. Market Behavior & Drivers

This prediction market, which tracks the probability of a Democratic win in Florida's 13th congressional district, has shown a relatively stable, sideways trend with a slight downward bias. The price began at 28.0% and has since settled into a narrower range, currently trading at 24.0%. The most significant movement was an early drop from the 28% level down to the 24% level. The provided context does not link this specific drop to a singular event, but it occurred within the broader environment of a Democratic challenger facing an incumbent Republican in a district rated as "Likely Republican" by the Cook Political Report. The price action reflects this challenging landscape for the Democratic candidate.
Trading volume in this market has been low, with a total of 387 contracts traded. The initial activity accounted for a notable portion of this volume, while subsequent periods have seen very little trading. This low and sporadic volume suggests a lack of broad market participation and conviction at this early stage of the campaign. The price has established a clear range, with the 28% mark acting as an initial resistance or ceiling and the 23-24% area serving as a support level where the price has since stabilized. Overall, the market sentiment is pessimistic about the Democratic candidate's chances. The stable, low probability reflects the external analysis that the district leans Republican, and traders have not yet seen any developments compelling enough to significantly reassess those odds.
  • District's "Likely Republican" rating and post-redistricting Trump +11 lean strongly favor Republicans.
  • Widespread economic dissatisfaction may pose headwinds for Republican incumbents by late April 2026.
  • Democratic challenger Leela Gray launched a significant fundraising effort in Q1 2026.
  • Recent redistricting shifted the district, bolstering Republican voter demographics and turnout.
  • The candidate filing deadline is June 12, 2026, preceding primary and general elections.

Who Wins and Why

Outcome Market Model Why
Republican party 73.0% 84.2% The district is rated 'Likely Republican' (R+5 Cook PVI) and benefited from redistricting.
Democratic party 24.0% 15.8% Research does not highlight strong supporting evidence.

Current Context

The FL-13 House race currently favors the Republican incumbent. The Cook Political Report rates Florida's FL-13 as "Likely Republican," with a Cook Partisan Voting Index (CPVI) of R+5 [1]. Incumbent Anna Paulina Luna holds this seat [1]. Prediction markets also reflect this lean, with the Republican candidate holding a 68% lead over the Democratic candidate at 27% on Polymarket, for a market scheduled to resolve around November 4, 2026 [2].
Democratic challenger Leela Gray is mounting a significant campaign. Gray launched her challenge against Representative Anna Paulina Luna in February 2026 [3]. Within months of entering the race, she reportedly raised over $561,000 [4]. Florida Politics highlighted Gray's campaign argument that recent redistricting, which reshaped Congressional District 13 by moving it north into Pasco County and altering its Pinellas-area voter composition, affects Luna's ability to withstand voter concerns regarding affordability and other backlash dynamics [5].
Sources (5)
  1. 1FL-13 2026 | Cook Political Reportcookpolitical.com
  2. 2FL-13 House Election Winner Predictions & Odds 2026 | Polymarketpolymarket.com
  3. 3'Stepping up': Leela Gray brings veteran background to challenge Anna Paulina Luna in CD 13floridapolitics.com
  4. 4Leela Gray hauls $561K within months of challenging Anna Paulina Luna for CD 13floridapolitics.com
  5. 5Redistricting shuffle: Leela Gray doubles down on CD 13 bidfloridapolitics.com

2. Price Chart

Historical Price (Probability)

Outcome probability
Date

3. Market Data

Contract Snapshot

This market resolves to "Yes" if the House member sworn in for Florida's 13th district for the term beginning in 2027 is a Republican; otherwise, it resolves to "No." The outcome is verified by the Library of Congress, and the event is mutually exclusive. The market opened on July 1, 2025, closes after the representative is sworn in or by November 3, 2027, and prohibits insider trading by federal office holders, campaign staff, polling organization employees, and foreign nationals, among others.

Available Contracts

Market options and current pricing

Outcome bucket Yes (price) No (price) Last trade probability
Republican party $0.75 $0.28 73%
Democratic party $0.29 $0.76 24%

Market Discussion

Prediction markets currently favor a Republican winner for Florida's 13th Congressional District in 2026, with Polymarket showing Republicans at 68% implied probability versus Democrats at 27% [1]. Kalshi's market also resolves "Yes" if a Republican is sworn in for the term beginning in 2027 [2]. The district's incumbent is Republican Anna Paulina Luna [3], and the general election is set for November 3, 2026 [4].

Sources (4)
  1. 1FL-13 House Election Winner Predictions & Odds 2026 | Polymarketpolymarket.com
  2. 2FL-13 House winner? Odds & Predictions 2026 - Kalshikalshi.com
  3. 3Florida's 13th Congressional District - Ballotpediaballotpedia.org
  4. 4Florida's 13th Congressional District election, 2026 - Ballotpediaballotpedia.org

4. Trust Index

Octagon Trust Index Kalshi 79 Good
How it adds up
Integrity80% of score83Good
Trade quality20% of score64Caution

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
80Good

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 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
82Deep

Size fills near the screen price

2 contracts · worst first

Leela Gray63
Tradeable · low confidence

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

Anna Paulina Luna85
Deep · medium confidence

Typical bar range 1.4% of price over 5 traded bars

24h traded notional $4,909 · 24h
Move quality
70Stable

No significant moves

2 contracts · worst first

Anna Paulina Luna—
No significant move (6h)

Price was stable over the last 6 hours.

Leela Gray—
No significant move (24h)

Price was stable over the last 24 hours.

Rule clarity
100Clear

Counts toward Resolution quality, not here

2 contracts · worst first

Anna Paulina Luna100
Clear · high confidence

All checks pass

objective outcome · Clearofficial source · Cleartime boundary · Clear
Leela Gray100
Clear · high confidence

All checks pass

objective outcome · Clearofficial source · Cleartime boundary · Clear
Trade quality
64Caution

Order book is thin

Tradable, but expect execution cost beyond small sizes.

Outcome quality 82 (notional-weighted across 2 scored legs)

$100 order: 1.1c slippage (~4% of a 30.5c contract)

$1,000 order: 3.2c slippage (~10% of a 30.5c contract)

$10,000 order: book too thin to fill

Anna Paulina Luna85Market scoreLiquidity85Move quality–Rule clarity100
Why 85
Liquidity
85 · Deep · medium confidence

Typical bar range 1.4% of price over 5 traded bars

24h traded notional $4,909 · 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
Leela Gray63Market scoreLiquidity63Move quality–Rule clarity100
Why 63
Liquidity
63 · Tradeable · low confidence

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

Move quality
No significant move (24h)

Price was stable over the last 24 hours.

Rule clarity
100 · Clear · high confidence

All checks pass

objective outcome · Clearofficial source · Cleartime boundary · Clear

underwriting_v1.4 · computed Sep 23, 2026

5. What voter registration data and historical performance metrics underpin the Cook Political Report's 'Likely Republican' rating for FL-13 ahead of the 2026 election?

Cook Partisan Voter IndexR+5 [1][2]
2024 Incumbent Re-election Vote Share54.8% for Anna Paulina Luna [3]
2026 Prediction Market Probability (Republicans)68.5% [2]
Florida's 13th congressional district is "Likely Republican" due to its favorable partisan lean. The Cook Political Report assigns FL-13 this rating, primarily driven by its structural advantage, evidenced by an R+5 Cook Partisan Voter Index [1][2]. The district's electoral landscape was significantly reshaped by redistricting following the 2020 Census, which made it more favorable to Republican candidates [1].
Recent election outcomes demonstrate the district's strong Republican shift. In the 2024 general election, incumbent Anna Paulina Luna secured re-election with 54.8% of the vote against Democrat Whitney Fox's 45.2% [3]. This result marked an increased Republican margin of 9.6 points and higher voter turnout compared to 2022 [3]. Historically, prior to the 2022 redistricting, the district had been won by Democrat Charlie Crist in both the 2018 and 2020 general elections [3][4].
Prediction markets reinforce a strong Republican advantage for 2026. Current prediction market pricing for the 2026 FL-13 House winner indicates Republicans at $0.69, suggesting a 68.5% probability of retaining the seat, while Democrats are priced at $0.32, indicating a 31.5% probability of flipping it [2]. This market sentiment aligns with the district's structural GOP lean. As of 2024, FL-13 has a population of 769,211 and a median age of 50.7 years [1][5][6]. While the district's structural advantage favors the GOP, the potential entry of a strong Democratic challenger, such as Leela Gray, is noted as a factor that could temper the Republican advantage [2].
Sources (6)
  1. 1wikipedia.orgen.wikipedia.org
  2. 2lines.com
  3. 3ballotpedia.org
  4. 4ballotpedia.org
  5. 5akashicedge.com
  6. 6datausa.io

6. How do the 2026 policy platforms of Anna Paulina Luna and Leela Gray compare on key local issues for Pinellas and Pasco County voters, such as property insurance and cost of living?

Luna - Corporate Home DivestmentCompanies must divest single-family homes over a ten-year period [1][2][3]
Luna - Flood Insurance PaymentsAllow monthly flood insurance payments [4]
Gray - Insurance Cost ConcernFloridians are "being crushed by the high cost of insurance" [5][6]
Anna Paulina Luna and Leela Gray offer distinct approaches to property insurance. Luna advocates for specific legislative measures, including a bill that would permit monthly flood insurance payments to alleviate financial burdens for families [4]. Leela Gray, conversely, emphasizes that Floridians are "being crushed by the high cost of insurance" and pledges to "tackle the Affordability and Insurance Crisis" [5][6]. Gray has explicitly criticized Luna for inaction on "skyrocketing costs of insurance," positioning herself as a proactive leader on this issue, although specific details of her proposed "CHEAPER Act" were not provided [5][6].
Regarding cost of living and housing, both candidates present differing strategies. Luna's strategy includes regulating corporate home-buying, mandating companies divest single-family homes over ten years, and reducing federal spending to combat inflation [1][2][3]. She opposes what she describes as "Biden's endless spending sprees" as a means to curb inflation [3]. However, Luna has faced criticism for her votes on legislation that opponents argue would have increased housing costs or failed to provide tax relief for middle-class families and hurricane victims [6]. Gray focuses on improving overall affordability for families, criticizing Luna for not adequately addressing escalating costs across insurance, housing, gas, and groceries [7][5][8]. Gray aims to bring "common-sense leadership to lower costs and improve people's lives" [7][5][8].
Sources (8)
  1. 1floridianpress.com
  2. 2house.govluna.house.gov
  3. 3house.govluna.house.gov
  4. 4tampabay.com
  5. 5floridapolitics.com
  6. 6whitneyfoxforcongress.com
  7. 7leelagray.com
  8. 8floridapolitics.com

7. How will the recent redistricting, which shifted FL-13 further into Pasco County, affect the voter demographic and turnout models for Anna Paulina Luna and Leela Gray in 2026?

Pasco residents added to FL-13Approximately 62,000 (41% Republican, 27% Democratic registration) [1][2][3]
Hypothetical Trump 2024 vote share+11 [1]
Cook PVI ratingR+5 [4][5]
Recent redistricting significantly altered Florida's 13th congressional district's political landscape. The district was reconfigured by adding approximately 62,000 residents from Pasco County, an area characterized by 41% Republican and 27% Democratic voter registration. Concurrently, a Democratic-leaning bloc was removed from St. Petersburg [1][2][3]. These changes significantly strengthened the district's Republican lean, resulting in a hypothetical Trump +11 vote in 2024 and a Cook PVI rating of R+5 [1][4][5].
The demographic shift is expected to bolster incumbent Anna Paulina Luna. This shift is anticipated to strengthen the position of the incumbent, Anna Paulina Luna, who was projected to secure a 54.8% vote share in 2024 [4]. While Leela Gray is reportedly continuing her campaign for CD 13, the district's newly configured partisan composition indicates a more challenging path for Democratic candidates [2]. Further evidence of this challenge is a Polymarket prediction showing the GOP at 68% for the 2026 election [2][6].
Sources (6)
  1. 1Breaking down the changes in Florida’s new Congressional districts – NBC 6 South Floridanbcmiami.com
  2. 2Redistricting shuffle: Leela Gray doubles down on CD 13 bidfloridapolitics.com
  3. 3New Florida congressional map shakes up districts for Suncoast frontrunners - The Bradenton Timesthebradentontimes.com
  4. 4FL-13 2026 | Cook Political Reportcookpolitical.com
  5. 5Florida's 13th congressional districten.wikipedia.org
  6. 6FL-13 House Election Winner Predictions & Odds 2026 | Polymarketpolymarket.com

8. What do the 2026 quarterly FEC filings for Anna Paulina Luna and Leela Gray reveal about their respective fundraising strengths, donor bases, and cash on hand?

Leela Gray 2026 Q1 Total Receipts$564,999.77 (FEC filings, 2026 Q1) [1]
Leela Gray 2026 Q1 Cash on Hand$500,234.95 (FEC filings, 2026 Q1) [1]
Anna Paulina Luna 2026 Q1 FundraisingNo comparable 2026 Q1 receipts or cash on hand figures available (FEC evidence) [2][3]
Leela Gray demonstrated strong initial fundraising in Q1 2026. Her FEC filings for the first quarter of 2026 indicate total receipts of $564,999.77 and a significant cash on hand balance of $500,234.95 at the close of the period [1]. Total contributions amounted to $557,999.77, comprising $475,290.00 from itemized individual contributions and $59,709.77 in unitemized contributions. Her total disbursements were $64,764.82, with $64,264.82 attributed to operating expenditures, showing that her fundraising efforts substantially outpaced her spending [1]. A press report also noted Gray raised over $561,000 in Q1, with more than 75% of contributions originating from Florida [4].
Comparative analysis for Anna Paulina Luna's 2026 filings is not possible. The available FEC evidence for Anna Paulina Luna does not include the necessary 2026 quarterly receipts or cash on hand figures needed to assess her fundraising strength against Gray's for the same period [2][3]. Although some Form 3 information from non-2026 quarters for Luna was retrieved, such as an October 2019 filing showing $55,225.00 in net contributions and $52,290.77 in cash on hand, this data is not relevant for a direct Q1 2026 comparison [2][3].
Sources (4)
  1. 1GRAY, LEELA J - Candidate overview | FECfec.gov
  2. 2FEC Disclosure Form 3 for Anna Paulina Luna for Congressdocquery.fec.gov
  3. 3FEC Disclosure Form 3 for ANNA PAULINA LUNA FOR CONGRESSdocquery.fec.gov
  4. 4Leela Gray hauls $561K within months of challenging Anna Paulina Luna for CD 13floridapolitics.com

9. Which national political trends for the 2026 midterms, such as presidential approval or the economic outlook, pose the most significant risk or benefit to Anna Paulina Luna's incumbency?

Trump Approval (April/May 2026)37–38% [1]
FL-13 Cook Partisan Voter IndexR+5 [2]
Polymarket Republican Hold Odds68% [3]
Anna Paulina Luna's incumbency faces significant risks from national political trends. Former President Trump's approval ratings currently range from 37–38% approval and 59–61% disapproval as of late April/early May 2026 [1]. Dissatisfaction with Trump's economic management is particularly high, with 61% disapproval, alongside general concerns about affordability and gas prices [1][4]. These economic sentiments typically correlate with poorer House outcomes for the president's party in midterm elections [1][4][5].
Despite these national headwinds, Florida's 13th congressional district leans strongly Republican. The district is rated as Likely Republican with a Cook Partisan Voter Index of R+5 [2]. Prediction markets reflect this district-specific advantage, with a Republican hold currently priced at approximately two-in-three odds; Polymarket shows 68% and lines.com implies 68.5% [3][6]. These figures suggest that national trends alone may not be sufficient to flip the seat [2][3][6]. The Polymarket FL-13 House winner market, set to resolve around November 4, 2026, directly assesses the risk to Luna's incumbency by measuring the odds of a Republican hold versus a Democratic flip [3].
Sources (6)
  1. 1National mood is against GOP; redistricting may soften the blow: NPRnpr.org
  2. 2FL-13 2026 | Cook Political Reportcookpolitical.com
  3. 3FL-13 House Election Winner Predictions & Odds 2026 | Polymarketpolymarket.com
  4. 4Home of the Marist Poll | Polls, Analysis, Learning, and Moremaristpoll.marist.edu
  5. 5GOP midterm prospects darken as Trump approval falls | Brookingsbrookings.edu
  6. 6Will Republicans Win the FL-13 House Election in 2026?lines.com

10. What Could Change the Odds

Key Catalysts

Key catalysts for the FL-13 House election market include crucial dates in the 2026 election cycle. The filing deadline for the 2026 cycle is June 12, 2026 [1], which could clarify the field of candidates. Following this, the Florida-13th Congressional District primary is scheduled for Aug 18, 2026 [1]. The general election itself will occur on Nov 3, 2026 [1].
Individual candidate developments are also significant, as demonstrated by Democrat Leela Gray filing to challenge incumbent Anna Paulina Luna (R) in FL-13 in early 2026, becoming a key Democratic challenger candidate [2]. Furthermore, potential changes to district boundaries through redistricting could act as a major catalyst. Reporting on Florida map disputes indicates that map outcomes can move election-model probabilities [3], and the FL-13 race is described as a “Toss-up” or highly competitive GOP-held seat heading into the 2026 cycle [4][5], making it sensitive to such changes.

Key Dates & Catalysts

  • Expiration: November 03, 2027
  • Closes: November 03, 2027
Sources (5)
  1. 1Florida's 13th Congressional District election, 2026 - Ballotpediaballotpedia.org
  2. 2'Stepping up': Leela Gray brings veteran background to challenge Anna Paulina Luna in CD 13flapol.com
  3. 3DeSantis, Jeffries clash over Florida maps as Democrats eye 2026 House controlcryptobriefing.com
  4. 4Florida's Competitive House Seats 2026: FL-13 and FL-27 Under the Microscope | USPollingData | USPollingData.comuspollingdata.com
  5. 5Will Republicans Win the FL-13 House Election in 2026?lines.com