Short Answer

Louisiana's LA-05 House race is not expected to be won outright, an outcome the market prices at 5.0%.

1. Market Behavior & Drivers

This market is pricing a low probability of any Louisiana House race being won outright in the November primary, a view that is inconsistent with available reporting. Publicly available information, citing the Louisiana Secretary of State, suggests all six of the state's congressional districts are expected to be decided on November 3, avoiding the need for a December runoff. Under the state's all-party primary system, a candidate must secure more than 50% of the vote to win outright. The market's 3% valuation implies traders see a high probability that every race will be forced into a runoff.
The contract's price history shows a significant move to 64% before declining to its current low level. The provided context does not contain a specific news event or development that coincides with this price volatility. The candidate qualifying period was held August 5-7, but the market's pricing suggests this did not resolve uncertainty in favor of outright victories. The disparity between the market price and public expectations remains the key feature of this contract.
  • LA-05 leads forecasters' projections with 90%+ probability of a Republican outright win.
  • LA-06 faces high Republican vote-splitting risk, making a December 2026 runoff highly probable.
  • LA-01 (Scalise) and LA-02 (Carter) are considered high-probability outright wins for incumbents.

Who Wins and Why

Outcome Market Model Why
LA-06 3.0% 1.0% A candidate may win this Louisiana House race outright.
LA-05 5.0% 1.8% An outright victory in this Louisiana House race remains possible.
LA-01 0.0% 0.0% An outright win is a minor possibility for this House race.
LA-02 0.0% 0.0% This Louisiana House race could see an outright winner.
LA-03 0.0% 0.0% An outright victory for this House race is a slight possibility.

Current Context

Louisiana House races will likely see outright winners on November 3. All six districts are expected to be decided in the primary, avoiding a December 12, 2026 runoff [1][2]. Louisiana operates an all-party open-primary system, requiring a candidate to exceed 50% of the vote for an outright victory [1]. Qualifying for these contests was held August 5–7, with the November registration deadline set for October 5 and early voting from October 20–27 [1][3][4][5]. Recent procedural and legal developments, specifically the Supreme Court ruling in Louisiana v. Callais, led to the cancellation of previously scheduled primaries and implemented a redrawn map, which discounts prior incumbent-versus-challenger assumptions, particularly in LA-06 [1][6]. The current outlook projects Republican outright wins in LA-01, LA-03, LA-04, LA-05, and LA-06, with Democrat Troy Carter securing LA-02 [2][7][8][9][10][11][12].
Five districts show high confidence for outright wins based on forecasts. DDHQ rates LA-01 as Safe Republican with 99% win probability and a projected R+32 margin for the field led by Steve Scalise; Kalshi pricing indicates 97.9% Republican [9][13]. LA-02 is rated Safe Democratic with incumbent Troy Carter holding over 99% probability and a D+100 margin, making it the clearest Democratic outright-win pick [8]. In LA-03, Clay Higgins (R) is rated Safe Republican by DDHQ at over 99% with an R+29 margin, supported by Polymarket pricing near 96% for a Republican winner [7][14]. LA-05 is a clear Republican favorite; DDHQ projects an R+23 margin with 99% probability, and Call the Map prices the GOP at 93.4%, calling the seat Republican 99 in 100 [15][16][12]. LA-04, anchored by House Speaker Mike Johnson who won 85.8% in 2024, is structurally strong for a Republican outright win, though a current DDHQ district forecast has not surfaced. Kalshi pricing showed 91.0% Republican in LA-04 [6][16]. LA-06 presents the greatest runoff risk due to its redrawn boundaries and a fragmented field [11][17][18]. Despite this, DDHQ gives the Republican field 98% probability with an R+23 margin, although its market page labels the contest a potential flip. Kalshi reported 95.9% Republican for LA-06 on September 12 [11][17][18]. Prediction markets broadly align with these structural forecasts, but it should be noted that these are market-implied probabilities, not election probabilities, and can be noisy with thin trading volume [2].
Sources (18)
  1. 1DETAILS FOR U.S. HOUSE RACES IN FALL FINALIZED BATON ROUGE, La.sos.la.gov
  2. 2Louisiana Midterm Elections: Prediction Market Leaders Today – Forbes Advisorforbes.com
  3. 3Congressional Primary Dates and Candidate Filing Deadlines for Ballot Accessfec.gov
  4. 42026 ELECTIONSsos.la.gov
  5. 5United States House of Representatives elections in Louisiana, 2026 - Ballotpediaballotpedia.org
  6. 62026 United States House of Representatives elections in...en.wikipedia.org
  7. 72026 Louisiana US House 3 General Election Forecast | DDHQvotes.decisiondeskhq.com
  8. 82026 Louisiana US House 2 General Election Forecast | DDHQvotes.decisiondeskhq.com
  9. 92026 Louisiana US House 1 General Election Forecast | DDHQvotes.decisiondeskhq.com
  10. 102026 Louisiana US House 5 Live Election Results | DDHQvotes.decisiondeskhq.com
  11. 112026 Louisiana US House 6 General Election Results | DDHQvotes.decisiondeskhq.com
  12. 122026 Louisiana US House 5 General Election Forecast | DDHQvotes.decisiondeskhq.com
  13. 132026 Louisiana House Election: Polls & Odds | Prediction Edgepredictionedge.com
  14. 14https://polymarket.com/event/la-03-house-election-winnerpolymarket.com
  15. 15LA-05: Republican 99 in 100 — Call the Mapcallthemap.com
  16. 162026 Louisiana House Election: Polls & Odds | Prediction Edgepredictionedge.com
  17. 172026 Louisiana US House 6 Markets | DDHQvotes.decisiondeskhq.com
  18. 182026 Louisiana House Election: Polls & Odds | Prediction Edgepredictionedge.com

2. Price Chart

Historical Price (Probability)

Outcome probability
Date

3. Market Data

Contract Snapshot

A YES resolution for the LA-03 market occurs if the Louisiana 3rd congressional district U.S. House race is won outright. Conversely, a NO resolution occurs if the LA-03 race is not won outright. The market is scheduled to resolve by November 3, 2027, which is listed as the "Max payout" date, and no special settlement conditions are detailed in the provided content.

Available Contracts

Market options and current pricing

Outcome bucket Yes (price) No (price) Last trade probability
LA-05 $0.05 $0.96 5%
LA-06 $0.05 $0.96 3%
LA-01 $0.97 $0.05 0%
LA-02 $0.97 $0.04 0%
LA-03 $0.96 $0.05 0%
LA-04 $0.97 $0.04 0%

Market Discussion

Incumbents Steve Scalise (LA-01), Troy Carter (LA-02), and Mike Johnson (LA-04) are strongly favored to win their Louisiana House races outright in the November 3 open primary, with market probabilities between 71% and 97% [1]. Representative Clay Higgins (LA-03) is also favored for an outright win, having won 70.6% in 2024 [2]. Conversely, LA-05 and LA-06 are seen as high runoff risks, with outright win probabilities as low as 1% to 7% due to crowded fields and vote splitting in these open seats, likely leading to a December 12 runoff [1].

Sources (2)
  1. 1Louisiana: Which House races will be won outright? - Cotes Kalshi | CoinRithmcoinrithm.com
  2. 2First Round Outright Winner in the LA-03 House Election?polymarket.com

4. Trust Index

Octagon Trust Index Kalshi 67 Caution

Order book is critically thin.

Primary risk· Trade quality

How it adds up
Integrity80% of score79Good

Market integrity is low (69), but Integrity averages all three scores, so the other two pull it up. Only a critically low score would cap the total.

Trade quality20% of score21Avoid

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

Trust score67Caution

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
69Caution

Outcome can be influenced

Thin-volume movesTrade signals · high confidence

“LA-05” made a sharp jump with almost no trading behind it.

Screened clean
Large tradesNo single trade dominates the tape. Clear
Size patternsNo distribution read 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
24Very thin

Hard to fill near the screen price

2 contracts · worst first · 4 below the volume floor — not scored

LA-0620
Very thin · low confidence

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

LA-0538
Very thin · low confidence

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

Move quality
56Mostly confirmed

Most moves carried real volume

2 contracts · worst first · 4 below the volume floor — not scored

LA-0556
Mostly confirmed · medium confidence

Volume confirms the move over 24h

LA-06—
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 · 4 below the volume floor — not scored

LA-05100
Clear · high confidence

All checks pass

objective outcome · Clearofficial source · Cleartime boundary · Clear
LA-06100
Clear · high confidence

All checks pass

objective outcome · Clearofficial source · Cleartime boundary · Clear
Trade quality
21Avoid

Order book is critically thin

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

Outcome quality 25 (notional-weighted across 2 scored legs)

$100 order: 0.5c slippage (~11% of a 4.5c contract)

$1,000 order: book too thin to fill

$10,000 order: book too thin to fill

4 below the volume floor — not scored

LA-0538Market scoreLiquidity38Move quality56Rule clarity100
Why 38
Liquidity
38 · Very thin · low confidence

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

Move quality
56 · Mostly confirmed · medium confidence

Volume confirms the move over 24h

Rule clarity
100 · Clear · high confidence

All checks pass

objective outcome · Clearofficial source · Cleartime boundary · Clear
LA-06Primary20Market scoreLiquidity20Move quality–Rule clarity100
Why 20
Liquidity
20 · Very thin · 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 30, 2026

5. What is the risk of vote-splitting among Republicans in the redrawn LA-06 district forcing a December 2026 runoff?

Runoff Risk Estimate75% to 95% [1][2][3][4][5]
Republican Registrants41% (vs 30% Democrats) [1][2][3][4][6][7]
Total Candidates10 (6 Republicans) [1][2][3][4][7]
The risk of vote-splitting among Republicans in LA-06 makes a runoff highly probable. Estimates indicate a 75% to 95% risk of Republican vote-splitting in Louisiana's 6th Congressional District (LA-06), likely necessitating a December 2026 runoff [1][2][3][4][5]. The district's electoral system employs an all-candidate open primary on November 3, 2026. An outright victory requires a candidate to secure over 50% of the vote; otherwise, the top two contenders will advance to a runoff election scheduled for December 12, 2026 [1][2][3][4][7]. Despite the district's strong Republican lean, where approximately 41% of registrants are Republican compared to 30% Democrat, and Donald Trump carried it by roughly 32 points in 2024, the open-primary structure renders intra-party vote division a critical factor for the election's outcome [1][2][3][4][6][7].
A crowded Republican field and internal disputes impede outright victory. A total of ten candidates have qualified for the election, including six Republicans, among whom are state senators Blake Miguez and Rick Edmonds [1][2][3][4][7]. Early polling suggests no candidate is currently close to the more than 50% threshold needed for an outright win, implying ample opportunity for potential late consolidation of support [2][8][6]. However, efforts towards Republican unity are complicated by the Louisiana Republican Party's endorsement of Blake Miguez, which was disputed by Rick Edmonds, hindering uncontested consolidation of the Republican vote [1][3][7]. An outright Republican victory would necessitate rapid consolidation of the GOP vote through strategies such as endorsements, candidate withdrawals, strategic spending, or late strategic voting [1][2][3][4][5]. Prediction market data generally aligns with a runoff outcome, although signals have shown some inconsistency [9][5][10].
Sources (10)
  1. 1With 10 Candidates and No Clear Lane, Louisiana’s Redrawn 6th Looks Headed for a Runoff - The Bayou Progressivebayouprogressive.com
  2. 2Race for Cleo Fields’ 6th District House seat wide open | State Politics | theadvocate.comtheadvocate.com
  3. 3Louisiana GOP endorses Miguez in 6th District; Edmonds disputes selection process - Livingston Parish Newslivingstonparishnews.com
  4. 4Louisiana's 6th Congressional District election, 2026ballotpedia.org
  5. 5https://polymarket.com/event/first-round-outright-winner-in-the-la-06-house-electionpolymarket.com
  6. 6Race for Cleo Fields' 6th District House seat wide opennola.com
  7. 739 candidates qualify to run for Louisiana’s 6 congressional districts | KRVS Radio Acadiekrvs.org
  8. 8Louisiana 6th District: Lobbyists and Self-Funders Shape GOP Race | Dissenterdissenter.com
  9. 9Louisiana: Which House races will be won outright? - Cotes Kalshi | CoinRithmcoinrithm.com
  10. 10Louisiana Midterm predictions & oddspolymarket.com

6. How does Mike Johnson's 85.8% vote share in the 2024 LA-04 election support forecasts for an outright win in November 2026?

Johnson 2024 Vote Share85.8% (against Republican opponent) [1][2][3]
District Partisan IndexR+17 [2][4]
Outright Win Probability97% (prediction market) [5][6]
Mike Johnson's 2024 vote share demonstrated strong support, but with limitations. He secured an 85.8% vote share in the 2024 LA-04 election against a fellow Republican, receiving 262,821 out of 306,248 votes [1][2][3]. This performance is cited as evidence of his strong incumbency and a high potential for future performance [1][3][7][2][4][5]. However, because the 2024 contest involved only Republican candidates, its outcome cannot be directly projected as a probability estimate for the 2026 Louisiana majority-vote primary, which will include both Democratic and Republican candidates [1][3][7][2][4][5].
Strong indicators support Johnson's outright win in the 2026 primary. Despite the limitations of the 2024 results, several factors point to an outright victory for Johnson in the 2026 LA-04 primary [3]. Key indicators include his incumbency, the district's Cook Partisan Voting Index of R+17, and a "Safe Republican" rating from Decision Desk HQ, which forecasts a 99% chance of a Republican win with an R+28 margin [2][4][3]. Furthermore, Johnson holds a significant fundraising advantage, having raised $20.98 million compared to his lower-profile opponents [3]. Prediction markets also indicate a high probability, with the Louisiana outright-race market showing 97% for LA-04 on September 28-29, specifically defining outright victory as exceeding 50% in the first round on November 3 [5][6]. Combining Johnson's past performance, the district's partisan lean, financial resources, and strong forecasts presents a compelling case for an outright victory in 2026 [1][3][7][2][4][5].
Sources (7)
  1. 1Louisiana Fourth Congressional District Election Resultsnytimes.com
  2. 2Louisiana's 4th Congressional District election, 2026 - Ballotpediaballotpedia.org
  3. 32026 Louisiana US House 4 Forecast | DDHQvotes.decisiondeskhq.com
  4. 4LA-04 2026 | Cook Political Reportcookpolitical.com
  5. 5Louisiana: Which House races will be won outright? - Cotes Kalshi | CoinRithmcoinrithm.com
  6. 6https://polymarket.copilot.markets/event/first-round-outright-winner-in-the-la-04-house-electionpolymarket.copilot.markets
  7. 7LA-04: Republican 99 in 100 — Call the Mapcallthemap.com

7. How do the partisan lean and incumbent strength in LA-01 (Scalise) and LA-02 (Carter) compare as indicators for an outright win in 2026?

LA-01 Partisan LeanCook PVI R+20 [1][2]
LA-02 Partisan LeanCook PVI D+25 [1][2]
LA-02 Implied Win Probability97% (September 29, 2026) [3]
LA-02's partisan lean offers a slightly better indicator for an outright win. While both districts are considered high-probability outright wins for 2026, LA-02's partisan lean appears marginally more reliable than LA-01's incumbent advantage [1][4][5]. As of September 29, 2026, market snapshots supported this, indicating implied outright-win probabilities of approximately 96% for LA-01 and 97% for LA-02, thus reinforcing LA-02 as marginally favored [3].
LA-01 features a strong incumbent, but faces vote-splitting risks. This district exhibits a stronger partisan baseline, holding a Cook PVI of R+20 and rated Solid Republican [1][2][6][7]. Incumbent Steve Scalise boasts a strong personal and incumbency profile, having secured 66.8% of the vote in 2024 and demonstrating substantial fundraising and spending by July 18, 2026 [8][1][9][10]. However, the presence of multiple Republican candidates alongside a Democrat and an unaffiliated candidate in the first round poses a risk of vote-splitting, which could create a threshold challenge for achieving an outright majority despite Scalise's considerable strength [11][10][8][5].
LA-02's strong partisan environment reduces fragmented opposition's impact. With a Cook PVI of D+25, this district is rated Solid Democratic and benefits from a safer partisan environment [1][2][9][8]. Incumbent Troy Carter also maintains a high probability of winning, having garnered 60.3% of the vote in 2024, though his financial edge is more modest compared to Scalise in terms of fundraising and spending by July 18, 2026 [8][1][9][10]. The D+25 environment in LA-02 significantly reduces the likelihood that fragmented opposition votes would prevent an outright majority, making its partisan lean a slightly better indicator for an outright win than LA-01's incumbent strength [5].
Sources (11)
  1. 12026 Louisiana US House 1 General Election Forecast | DDHQvotes.decisiondeskhq.com
  2. 2The 2026 Cook Partisan Voting Index (Cook PVI℠) | Cook Political Reportcookpolitical.com
  3. 3Louisiana: Which House races will be won outright? - Cotes Kalshi | CoinRithmcoinrithm.com
  4. 42026 Louisiana US House 2 General Election Forecast | DDHQvotes.decisiondeskhq.com
  5. 5https://polymarket.copilot.markets/event/first-round-outright-winner-in-the-la-02-house-electionpolymarket.copilot.markets
  6. 6LA-01: Republican 99 in 100 — Call the Mapcallthemap.com
  7. 7LA-01 2026 | Cook Political Reportcookpolitical.com
  8. 82026 United States House of Representatives elections in Louisianaen.wikipedia.org
  9. 9LA-02 2026 | Cook Political Reportcookpolitical.com
  10. 10Louisiana's 2nd Congressional District - Ballotpediaballotpedia.org
  11. 11Louisiana's 1st Congressional District - Ballotpediaballotpedia.org

8. What is the historical rate of Louisiana U.S. House incumbents winning outright by exceeding the 50% threshold in past open primaries?

Election SystemOpen primary system for U.S. House elections (Louisiana) [1][2][3][4][5][6][7][8]
Outright Win ThresholdExceeding 50% vote threshold [1][2][3][4][5][6][7][8]
Incumbent Outright Win RateVery high historical rate (runoffs uncommon for incumbents 2014-2024) [1][9][10][5][11][12][13][6][14][15][16][17][18][19][20][21][22][23][24][25]
Louisiana's open primary system allows outright U.S. House victories. The state employs an open primary system for its U.S. House elections, where candidates can achieve an outright win by securing more than 50% of the votes [1][2][3][4][5][6][7][8]. This threshold eliminates the need for a subsequent runoff election if a candidate surpasses the majority vote [1][2][3][4][5][6][7][8].
Incumbents rarely face runoffs, often winning outright. Historically, incumbents in Louisiana's U.S. House races have consistently demonstrated a very high rate of winning outright in these open primaries, exceeding the 50% mark [1][9][10][5][11][12][13][6][14][15][16][17][18][19][20][21][22][23][24][25]. Consequently, runoffs have been relatively uncommon for incumbents, particularly during election cycles between 2014 and 2024 [1][9][10][5][11][12][13][6][14][15][16][17][18][19][20][21][22][23][24][25]. However, the provided information does not specify the precise numerical percentage for this historical rate of incumbents winning outright.
Sources (25)
  1. 12018 United States House of Representatives elections in Louisianaen.wikipedia.org
  2. 2What is Louisiana's "jungle primary"? | AP Newsapnews.com
  3. 3Louisiana's 1st Congressional District election, 2026 - Ballotpediaballotpedia.org
  4. 4United States House of Representatives elections in Louisiana, 2012 - Ballotpediaballotpedia.org
  5. 5United States House of Representatives elections in Louisiana, 2014 - Ballotpediaballotpedia.org
  6. 6United States House of Representatives elections in Louisiana, 2016 - Ballotpediaballotpedia.org
  7. 7United States House of Representatives elections in Louisiana, 2020 - Ballotpediaballotpedia.org
  8. 8United States House of Representatives elections in Louisiana, 2024 - Ballotpediaballotpedia.org
  9. 9Louisiana secretary of state's race moves to December runoff | AP Newsapnews.com
  10. 10Louisiana's 1st Congressional District elections, 2014 - Ballotpediaballotpedia.org
  11. 11Louisiana's 2nd Congressional District elections, 2014 - Ballotpediaballotpedia.org
  12. 12Louisiana's 3rd Congressional District elections, 2014 - Ballotpediaballotpedia.org
  13. 13Louisiana's 1st Congressional District election, 2016 - Ballotpediaballotpedia.org
  14. 14Louisiana's 6th Congressional District election, 2016 - Ballotpediaballotpedia.org
  15. 15Louisiana's 2nd Congressional District election, 2016 - Ballotpediaballotpedia.org
  16. 16Louisiana's 5th Congressional District election, 2022 - Ballotpediaballotpedia.org
  17. 17Louisiana's 1st Congressional District election, 2020 - Ballotpediaballotpedia.org
  18. 18Louisiana's 6th Congressional District election, 2020 - Ballotpediaballotpedia.org
  19. 19Louisiana's 1st Congressional District election, 2018 - Ballotpediaballotpedia.org
  20. 20Louisiana's 2nd Congressional District election, 2018 - Ballotpediaballotpedia.org
  21. 21Louisiana's 6th Congressional District election, 2018 - Ballotpediaballotpedia.org
  22. 22Louisiana's 3rd Congressional District election, 2018 - Ballotpediaballotpedia.org
  23. 23Louisiana's 1st Congressional District election, 2024 - Ballotpediaballotpedia.org
  24. 24Louisiana's 4th Congressional District election, 2024 - Ballotpediaballotpedia.org
  25. 25Louisiana's 2nd Congressional District election, 2024 - Ballotpediaballotpedia.org

9. What specific district data from DDHQ and other forecasters validates the 90%+ probability of a Republican outright win in LA-05 for 2026?

Republican Win Probability (DDHQ/Call the Map)93%-99%+ (as of Sep 30, 2026) [1][2][3][4]
Cook PVIR+17 [5][6][4]
Prediction Market Probability88%-95% [7][8][3]
Leading forecasters consistently project a high probability of a Republican victory in LA-05. As of September 30, 2026, leading election forecasters such as Decision Desk HQ (DDHQ) and Call the Map estimate Republican victory probabilities ranging from 93% to over 99% for Louisiana's 5th Congressional District [1][2][3][4]. This robust forecast is firmly anchored by the district's structural advantage, notably indicated by a Cook Partisan Voter Index (PVI) of R+17, and the consistent pattern of Republican candidates securing double-digit margins in recent elections [5][6][4].
Prediction markets show slightly lower odds due to the state's open primary. Historically, prediction markets have priced the Republican Party's win probability in LA-05 between 88% and 95% [7][8][3]. These figures account for the inherent volatility associated with Louisiana's open primary system and the current fragmented field of eight Republican candidates [7][8][3]. Both forecasters and markets identify the primary risk not as a potential Democratic flip, but rather the possibility that a fragmented Republican vote could necessitate a December 12 runoff. An outright majority (greater than 50%) is required on November 3 to avoid such a runoff election [7][2][6][4].
Sources (8)
  1. 12026 Louisiana US House 5 Forecast | DDHQvotes.decisiondeskhq.com
  2. 2LA-05: Republican 99 in 100 — Call the Mapcallthemap.com
  3. 3https://polymarket.copilot.markets/event/la-05-house-election-winnerpolymarket.copilot.markets
  4. 42026 Louisiana's 5th Congressional District Election | Smarter.Votesmarter.vote
  5. 5Louisiana's 5th Congressional District election, 2026ballotpedia.org
  6. 6Louisiana qualifying: See who’s running for Congress | Local Elections | nola.comnola.com
  7. 7LA-05 House Race 2026: Republican Odds Drop to 88% | Prediction.comprediction.com
  8. 8Will a Republican Win the LA-05 House Race? Winner Odds | Lines.comlines.com

10. What Could Change the Odds

Key Catalysts

Louisiana's 2026 U.S. House elections are conducted via an open "jungle primary" system, where all candidates appear on a single ballot on November 3, 2026 [1][2][3]. The primary catalyst for these races centers on the requirement for a candidate to receive more than 50% of the vote to secure an outright win [1][2][3]. As of late September 2026, forecast models generally project outcomes based on safe partisan baselines, yet clearing this 50% threshold on Election Day remains the key driver of runoff uncertainty in multi-candidate fields [4][5][6].
If no candidate achieves the necessary majority on November 3, 2026, a runoff election is scheduled for December 12, 2026, between the top two finishers [1][2][3]. This potential runoff represents a critical event that could significantly shift market probabilities. Further, fundraising reports, such as those due in July 2026 for the pre-primary period, provide additional insights into candidate viability and campaign strength [7][8].

Key Dates & Catalysts

  • Expiration: November 03, 2027
  • Closes: November 03, 2027
Sources (8)
  1. 12026 United States House of Representatives elections in...en.wikipedia.org
  2. 2United States House of Representatives elections in...ballotpedia.org
  3. 3Louisiana qualifying: See who’s running for Congress | Local Elections | nola.comnola.com
  4. 42026 Louisiana US House 1 General Election Forecast | DDHQvotes.decisiondeskhq.com
  5. 52026 Louisiana US House 6 General Election Forecast | DDHQintegration-votes.decisiondeskhq.com
  6. 62026 Louisiana US House 5 General Election Forecast | DDHQvotes.decisiondeskhq.com
  7. 72026 ELECTIONSsos.la.gov
  8. 8FEC | Dates and deadlines | Louisiana House primary/general election report notice (2026)fec.gov

12. Related News

-61.0pp
Last updated: September 30, 2026, 13:04 UTC

Crowded Fields in LA-05, LA-06 Prompt Runoff Bets in House Markets

Prediction market odds for an outright November victory in two key Louisiana U.S. House races plummeted on Tuesday, September 29, 2026, as traders priced in the high likelihood of December runoffs. Th...