Kansas's 4th District margin of victory
Short Answer
Both the model and the market expect Republicans to win Kansas's 4th District by 8 or more points, with no compelling evidence of mispricing.
1. Executive Verdict
- District shows a strong Republican lean, with R+12 Cook PVI.
- Recent elections demonstrate consistent large Republican margins of victory.
- Incumbent Ron Estes demonstrates strong fundraising for the 2026 cycle.
- Public polling data is currently unavailable for this election.
- Market sentiment favors a Republican victory, as shown on Polymarket.
Who Wins and Why
| Outcome | Market | Model | Why |
|---|---|---|---|
| Republicans, 23+ pts | 43.0% | 41.1% | The district's R+12 Cook PVI and large historical margins suggest a substantial Republican victory. |
| Republicans, 8+ pts | 90.1% | 88.6% | An R+12 Cook PVI and consistent large margins indicate a strong Republican lean. |
| Republicans, 11+ pts | 78.0% | 75.4% | The district's strong Republican lean and past large margins support a significant victory. |
| Republicans, 20+ pts | 50.0% | 47.6% | Consistent large margins and an R+12 Cook PVI predict a substantial Republican lead. |
| Republicans, 17+ pts | 59.0% | 54.0% | The R+12 Cook PVI and large historical margins indicate a strong Republican advantage. |
Current Context
Kansas's 4th District strongly favors Republicans, as seen in recent results. In the 2024 election, Republican incumbent Ron Estes won with 65.0% of the vote (198,465 votes) against Democratic challenger Esau Freeman, who received 35.0% (106,632 votes), marking a 30.0-point margin of victory [^][^]. This district's strong Republican lean is further highlighted by its Cook Partisan Voting Index (PVI) of R+12, indicating it is approximately 12 points more Republican than the national average based on presidential results [^][^].
The upcoming election cycle features a strong Republican advantage, according to predictions. Key dates for the 2026 election in Kansas's 4th Congressional District include the Democratic primary on August 4, 2026, the general election on November 3, 2026, and a filing deadline of June 1, 2026 [^][^]. Prediction markets align with the district's structural lean, with Polymarket crowdsignals consistently showing a high likelihood for a Republican win. Recent snapshots from the market indicate Republican probabilities around 90% (with Democratic probabilities at 11%) and 85% (with Democratic probabilities at 13%), suggesting very low odds for a Democratic victory [^][^].
2. Market Behavior & Price Dynamics
Historical Price (Probability)
Outcome probability
Date
This market has experienced a dramatic upward trend, moving from a starting price of 1.0% to its current level of 90.1%. The most significant price action occurred in a very short period, with the price jumping from 1.0% to 81.0% and then spiking another 9.1 percentage points to 90.1% shortly after. According to the provided context, there are no specific news events, announcements, or social media activity that would explain this rapid price increase on May 07, 2026. The initial low price seems to have been an outlier, with the market quickly repricing to reflect the district's strong Republican fundamentals.
The total trading volume is relatively modest at 580 contracts. Notably, the sample data shows zero volume on the days with the most extreme price movements, which suggests that the sharp re-pricing may have been caused by one or a few traders establishing a new price level, or a market maker adjustment, rather than a broad wave of trading activity. This lack of volume during the spike could indicate low liquidity or that the market was simply correcting an initial mispricing. Given the rapid ascent, distinct support and resistance levels have not yet been established, with the price moving quickly from its floor near 1.0% to its current peak.
The current price of 90.1% indicates a very strong market sentiment, with participants overwhelmingly expecting a Republican margin of victory of 17 points or more. This sentiment is well-supported by the contextual information, which highlights the district's R+12 Cook Partisan Voting Index and the incumbent's 30.0-point margin of victory in the 2024 election. The chart suggests the market rapidly corrected its initial assessment to align with the strong historical and partisan lean of Kansas's 4th District.
3. Significant Price Movements
Notable price changes detected in the chart, along with research into what caused each movement.
📈 May 07, 2026: 10.0pp spike
Price increased from 49.0% to 59.0%
Outcome: Republicans, 17+ pts
What happened: The provided web research does not indicate any social media activity, traditional news, or official announcements that would explain a 10.0 percentage point price spike in the "Republicans, 17+ pts" outcome for Kansas's 4th District on May 7, 2026 [^]. There is no evidence found of such a poll spike or an associated catalyst in the specified timeframe [^]. While the district generally favors Republicans with a R+12 Cook PVI and a significant 2024 margin of victory, no specific event from May 7, 2026, was identified to cause this precise movement [^]. Therefore, social media was not a primary driver, as no relevant activity or market movement could be verified.
4. Market Data
Contract Snapshot
This market resolves to "Yes" if the Republican Party wins the 2026 U.S. House of Representatives election in Kansas's 4th District by 20 percentage points or more; otherwise, it resolves to "No." The margin is calculated without rounding as the Republican vote percentage minus the next highest candidate's percentage, verified by an official election authority. The market relates to the November 3, 2026 election, closing early if certified results are published, or by November 3, 2027, at the latest.
Available Contracts
Market options and current pricing
| Outcome bucket | Yes (price) | No (price) | Last trade probability |
|---|---|---|---|
| Republicans, 8+ pts | $0.90 | $0.10 | 90% |
| Republicans, 11+ pts | $0.78 | $0.23 | 78% |
| Republicans, 17+ pts | $0.59 | $0.42 | 59% |
| Republicans, 20+ pts | $0.50 | $0.51 | 50% |
| Republicans, 23+ pts | $0.43 | $0.58 | 43% |
| Republicans, 32+ pts | $0.12 | $0.89 | 12% |
| Republicans, 14+ pts | $0.67 | $0.34 | 0% |
| Republicans, 26+ pts | $0.28 | $0.73 | 0% |
| Republicans, 29+ pts | $0.21 | $0.80 | 0% |
Market Discussion
Kansas's 4th District holds a Cook Partisan Voter Index of R+12, indicating it is a Republican stronghold where incumbent Ron Estes has consistently secured significant victories, often by margins of 25-30 percentage points in recent general elections [^]. As of May 5, 2026, prediction markets assess a high probability of a substantial Republican win, with a 59% chance of a victory margin of 17 points or more, 50% for 20 points or more, and 43% for 23 points or more [^].
5. What do historical election results since 2012 in Kansas's 4th District indicate about the typical Republican margin in midterm cycles?
| Average Republican Midterm Margin (2014-2022) | 26.3 percentage points [^][^][^][^][^] |
|---|---|
| 2022 Republican Midterm Margin | 26.7 points [^][^][^] |
| 2014 Republican Midterm Margin | 33.4 points [^][^][^] |
Kansas's 4th District shows a significant Republican midterm advantage. Since 2014, historical election results indicate an average Republican margin of 26.3 percentage points in midterm cycles [^][^][^][^][^]. Data for a 2012 midterm is not available, as that was a presidential election year [^][^].
Republican margins varied across the three recent midterm elections. In the 2014 midterm, Mike Pompeo (R) secured a substantial victory with 66.7% of the vote against 33.3%, resulting in a margin of 33.4 points [^][^][^]. The 2018 midterm saw Ron Estes (R) win with 59.4% against 40.6%, yielding a margin of 18.9 points [^][^]. Most recently, in the 2022 midterm, Ron Estes (R) won with 63.3% of the vote against 36.7%, achieving a margin of 26.7 points [^][^][^].
6. How might the outcome of the August 4, 2026 Democratic primary affect the final Republican margin of victory in November?
| Cook PVI (Kansas's 4th District) | R+12 [^][^] |
|---|---|
| Incumbent Ron Estes 2024 vote share | 65.0% [^][^] |
| Impact of 'extremist' Democratic nominee | Can significantly reduce party's general election vote share [^][^] |
Kansas's 4th Congressional District is a strongly Republican area, evidenced by its Cook Partisan Voter Index of R+12 [^] [^] . The current Republican incumbent, Ron Estes, was re-elected in 2024 with 65.0% of the vote and is seeking re-election in 2026 [^][^]. The outcome of the Democratic primary on August 4, 2026, could influence the Republican margin of victory in the general election primarily by affecting the Democratic party's overall vote share [^][^].
Research indicates that nominating an "extremist" Democratic candidate in this district has substantially reduced the party's general election vote share [^] [^] . As of April 2026, the declared Democratic candidates for the primary include Chris Carmichael, Cole Epley, Ryan Gilbert, Jordan Mitchell, and Katy Tyndell [^]. Kansas maintains an open Democratic primary, allowing unaffiliated voters to participate [^][^]. However, the available information does not specify the ideological stances of these declared candidates or detail other ways the primary outcome might influence the Republican margin beyond the impact of an "extremist" nominee [^][^][^].
7. How does incumbent Ron Estes's fundraising for the 2026 cycle compare to his performance in the 2024 and 2022 elections?
| Q1 2026 Cash on Hand | $1.62 million [^] |
|---|---|
| 2024 Election Vote Share | 65.2% [^][^] |
| 2026 District Rating | Solid R [^] |
Ron Estes shows strong fundraising for the 2026 election cycle. His campaign demonstrated a robust financial start, reporting $1.62 million cash on hand, $371,700 in receipts, and $378,300 in disbursements in a Q1 2026 report [^]. This follows an earlier Q4 FEC disclosure that showed $1.6 million cash on hand, after raising $222,000 and spending $106,200 [^][^]. Initial fundraising in Q2 2025 indicated $1.4 million cash on hand [^]. This financial standing is comparable to his position in the later stages of the 2024 cycle, when he had $1.67 million cash on hand by June 2024 [^] and July 2024 [^].
Estes maintains a strong electoral record in a safe district. He secured 65.2% of the vote in 2024 [^][^] and 64% in 2022 [^], winning both elections by margins of approximately 30 percentage points [^]. Political forecasting models reinforced his strong position, predicting a greater than 99% chance of him winning Kansas's 4th District in 2024 [^]. For the 2026 election, the Kansas 4th District is consistently rated as "Solid R," indicating a high likelihood of a Republican victory [^].
8. What public polling data, if any, is available for the Kansas 4th District congressional race leading up to the 2026 election?
| Cook PVI (KS-04) | R+12 [^][^] |
|---|---|
| Trump victory margin (KS-04) | 23 points [^][^] |
| Polymarket Republican odds | 87% [^] |
Public polling is currently unavailable for the Kansas 4th District election. As of May 8, 2026, no general-election public polling data has been located for the Kansas 4th District congressional race leading up to the 2026 election [^][^]. The incumbent for this district is Ron Estes, a Republican [^][^]. The Cook Political Report provides a partisan baseline, rating the 4th District as Cook PVI R+12 [^][^]. This assessment is consistent with the district's voting history, as it supported Donald Trump by 23 points in the most recent referenced presidential election [^][^]. Ballotpedia also offers district ratings but confirms no polling table is available in its content for this race [^][^].
Prediction markets strongly favor the Republican Party in this race. Forecasts from Polymarket for the KS-04 House Election Winner market, which is set to resolve on November 3, 2026, indicate a high probability for a Republican victory [^]. Based on current market activity, the Republican Party is favored with an 87% chance of winning, while the Democratic Party holds a 13% chance [^].
9. Beyond historical margins, what do voter registration and demographic trends in KS-04 suggest about the partisan lean of the district leading into 2026?
| Cook Partisan Voter Index (KS-04) | R+12 [^] |
|---|---|
| Sedgwick County Republican Advantage | 48,434 registrants [^] |
| Polymarket Republican Winner Probability | 87% [^] |
Kansas's 4th Congressional District exhibits a strong Republican lean for the 2026 election. This assessment is supported by its Cook Partisan Voter Index (PVI) of R+12, indicating that the district votes roughly 12 points more Republican than the national average, based on 2020 and 2024 presidential election results [^]. Overall market predictions also consistently favor a Republican winner for the 2026 contest [^].
Voter registration data further reinforces the district's Republican advantage. Specifically, in Sedgwick County, a significant area within KS-04, there is a substantial Republican lead in registrations. As of May 1, 2024, the county's statewide party registration roll listed 133,606 registered Republicans compared to 85,172 Democrats, resulting in a Republican registration advantage of approximately 48,434 individuals [^].
Prediction markets strongly anticipate a Republican victory in this race. For the "KS-04 House Election Winner," a Republican candidate is given an approximate 87% chance of winning, while a Democratic candidate is projected to have around a 13% chance. This suggests that traders widely expect a Republican triumph in the 2026 KS-04 House election [^].
10. What Could Change the Odds
Key Catalysts
Market sentiment indicates a high probability for a Republican victory in KS-04, with Polymarket showing 87% in January 2026 and 85% in February 2026, and the market resolving on November 3, 2026 [^] [^] . The district has a strong Republican lean, with a Cook PVI of R+12 according to Ballotpedia or R+14 based on Polymarket analysis [^][^]. Major race ratings also reflect this, with Cook designating the race as Solid Republican and Sabato as Safe Republican [^]. Additionally, a Kalshi market exists for a KS-04 Republican margin of victory of >=20 points [^].
The incumbent, Ron Estes (R), won 65% in the 2024 general election and 100% in the primary, and reported $1.63M cash on hand in December 2025 [^] [^] [^] . Donald Trump also secured 61% in KS-04 in 2024 [^]. Important upcoming dates for the 2026 election cycle include the filing deadline on June 1, the primary on August 4, and the general election on November 3, 2026 [^][^].
Key Dates & Catalysts
- Expiration: November 03, 2027
- Closes: November 03, 2027
11. Decision-Flipping Events
- Trigger: Market sentiment indicates a high probability for a Republican victory in KS-04, with Polymarket showing 87% in January 2026 and 85% in February 2026, and the market resolving on November 3, 2026 [^] [^] .
- Trigger: The district has a strong Republican lean, with a Cook PVI of R+12 according to Ballotpedia or R+14 based on Polymarket analysis [^] [^] .
- Trigger: Major race ratings also reflect this, with Cook designating the race as Solid Republican and Sabato as Safe Republican [^] .
- Trigger: Additionally, a Kalshi market exists for a KS-04 Republican margin of victory of >=20 points [^] .
13. Historical Resolutions
No historical resolution data available for this series.
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