New Hampshire's 1st District margin of victory
Short Answer
Both the model and the market overwhelmingly agree that Democrats will win New Hampshire's 1st District by 1 or more points, with only minor residual uncertainty.
1. Executive Verdict
- The NH-01 contest is an open seat following Pappas's Senate run.
- The district carries a D+2 PVI, indicating a Democratic lean.
- Republican primary outcomes are expected to significantly influence the final margin.
- Hollie Noveletsky appears to have a strong financial and endorsement advantage.
- District-level polling schedules are not guaranteed before the general election.
- The 2024 Biden/Harris results were 51-49 in the district.
Who Wins and Why
| Outcome | Market | Model | Why |
|---|---|---|---|
| Democrats, 10+ pts | 61.0% | 58.1% | A consistent Democratic lean and initial forecasts suggest a strong Democratic margin, possibly amplified by a primary outcome. |
| Democrats, 13+ pts | 31.0% | 30.2% | A consistent Democratic lean and initial forecasts suggest a strong Democratic margin, possibly amplified by a primary outcome. |
| Democrats, 4+ pts | 88.0% | 86.3% | A consistent Democratic lean and initial forecasts suggest a strong Democratic margin, possibly amplified by a primary outcome. |
| Democrats, 1+ pts | 94.5% | 93.6% | A consistent Democratic lean and initial forecasts suggest a strong Democratic margin, possibly amplified by a primary outcome. |
| Democrats, 7+ pts | 77.0% | 74.4% | A consistent Democratic lean and initial forecasts suggest a strong Democratic margin, possibly amplified by a primary outcome. |
Current Context
New Hampshire's 1st Congressional District has a history of competitive elections. This district covers southeastern New Hampshire, encompassing Greater Manchester, the Seacoast, and the Lakes Region [^]. Historically, it has been a swing district, frequently changing hands between parties [^]. However, incumbent Democrat Chris Pappas broke a streak of incumbents losing re-election by securing consecutive terms in 2020 with 51.3% of the vote and in 2024 with 54.0% [^][^][^]. The district narrowly supported Kamala Harris in the 2024 presidential election, and holds a D+2 Cook Partisan Voting Index (PVI) [^][^].
The 2026 election will be an open race for the district. Current incumbent Chris Pappas is retiring to pursue a U.S. Senate seat [^][^]. Primary elections for the district are scheduled for September 8, 2026, with the general election to follow on November 3, 2026 [^][^][^][^]. Several Republican candidates have already declared or filed paperwork, including Melissa Bailey, Brian Cole, Anthony DiLorenzo, and Hollie Noveletsky [^][^]. The 2026 midterm elections will see all 435 seats in the House of Representatives contested, along with 35 Senate seats [^][^]. Political experts observe a traditional trend where the president's party often loses seats in midterm elections, a dynamic potentially amplified by lower presidential approval ratings [^]. The Democratic Party currently faces a challenge in lacking a singular spokesperson or a cohesive policy agenda beyond opposition to the former president [^].
Prediction markets favor a Democratic victory in the upcoming election. These markets, which allow individuals to wager on election outcomes, are considered by some analysts to be potentially more accurate than traditional polling due to their inherent incentive structure [^][^]. On platforms like Kalshi, there is a 59% chance for Democrats to win the district by 4 percentage points or more, and a 44% chance to win by 7 percentage points or more [^]. The 120th Congress is scheduled to convene on January 3, 2027, or later [^].
2. Market Behavior & Price Dynamics
Historical Price (Probability)
Outcome probability
Date
This prediction market has experienced a dramatic and rapid upward trend. The contract price started at a low of 1.0% on May 05, 2026, before skyrocketing to its current price of 94.5%. The most significant price movement occurred between May 07 and May 08, when the probability jumped 16.5 percentage points from 78.0% to 94.5%. The provided context indicates that the cause for this sharp increase cannot be confirmed, as there are no clear corresponding news events or social media activity cited to explain the market's re-evaluation.
The total volume of 3,023 contracts suggests moderate trading activity over the life of the market. However, the sample data points provided for the period of the most dramatic price increase show zero volume, which could imply the price moves were driven by trades on other days or that the market is relatively thin, allowing significant price shifts on low volume. The current price of 94.5% is acting as a strong resistance level, representing the peak of market confidence. The chart suggests a powerful and swift shift in market sentiment, with traders now overwhelmingly confident in the outcome of a Democratic victory of 10 points or more in New Hampshire's 1st District.
3. Significant Price Movements
Notable price changes detected in the chart, along with research into what caused each movement.
📈 May 08, 2026: 32.0pp spike
Price increased from 29.0% to 61.0%
Outcome: Democrats, 10+ pts
What happened: The reported 32.0 percentage point spike for "Democrats, 10+ pts" in New Hampshire's 1st District on May 08, 2026, cannot be confirmed by available sources [^][^]. Without evidence that this specific market movement occurred, it is not possible to identify any social media activity, traditional news, or market structure factor as its primary driver. Therefore, social media activity is irrelevant in explaining an unconfirmed event.
4. Market Data
Contract Snapshot
This market resolves to "Yes" if the Democratic Party wins the 2026 U.S. House of Representatives election in New Hampshire's 1st District by 10 percentage points or more; otherwise, it resolves to "No." The margin is calculated precisely as the Democratic Party's vote percentage minus the closest opponent's percentage, without rounding. The market closes early if certified election results are published, or by November 3, 2027, at 11:00 AM EDT, with payouts projected 30 minutes after closing.
Available Contracts
Market options and current pricing
| Outcome bucket | Yes (price) | No (price) | Last trade probability |
|---|---|---|---|
| Democrats, 1+ pts | $0.89 | $0.12 | 95% |
| Democrats, 4+ pts | $0.86 | $0.15 | 88% |
| Democrats, 7+ pts | $0.80 | $0.23 | 77% |
| Democrats, 10+ pts | $0.63 | $0.39 | 61% |
| Democrats, 13+ pts | $0.33 | $0.69 | 31% |
| Democrats, 16+ pts | $0.26 | $0.75 | 19% |
| Democrats, 19+ pts | $0.14 | $0.87 | 7% |
| Democrats, 22+ pts | $0.06 | $0.94 | 6% |
Market Discussion
Democrat Pappas won New Hampshire's 1st Congressional District by an 8.0-point margin in 2024 [^]. The 2026 race is projected to be an open seat, with Pappas expected to run for Senate as of January 26, 2026 [^]. Early January 2026 polling for the open seat shows a Democratic candidate, Stefany Shaheen, leading with 33% but with 66% undecided voters [^], leading prediction markets to favor a Democratic win (61-81%) based on these polls and fundraising [^], although options for a Republican victory of 2+ points also exist [^].
5. Which potential Democratic and Republican primary outcomes are viewed by analysts as most likely to affect the final November 2026 margin?
| DiLorenzo Republican Primary Support | 47% [^][^][^] |
|---|---|
| Noveletsky Republican Primary Support | 41% [^][^][^] |
| Shaheen Democratic Primary Support | 33% [^][^] |
Republican primary outcomes are expected to significantly influence the 2026 general election margin. Analysts view potential Republican primary results as most likely to affect the final November 2026 margin, particularly due to the closeness of the race between DiLorenzo and Noveletsky [^][^][^]. DiLorenzo currently holds 47% support, with Noveletsky at 41% [^][^][^]. This tight contest is seen as a potential factor that could influence general election turnout differences between moderate and base voters. The Cook Political Report indicates that a repeat of GOP hard-right primary picks, described as Trump acolytes, could lead to a larger Democratic margin in 2026, similar to the significant Democratic victories observed in 2022 [^].
The Democratic primary presents an unclear outcome, but the district favors Democrats. An early January 2026 UNH Poll showed Shaheen with 33% and Sullivan with 10% in the Democratic primary, with 43% of voters remaining undecided [^][^]. However, the research does not explicitly detail which specific Democratic primary outcome is viewed by analysts as most likely to affect the final November 2026 margin. The district is rated D+2, and Democrats have a 61% general election win probability on Polymarket [^][^][^].
6. How do initial 2026 race ratings from non-partisan forecasters like The Cook Political Report and Sabato's Crystal Ball classify the NH-01 election?
| Cook Political Report Rating | Likely D (February-March 2026) [^] |
|---|---|
| Sabato's Crystal Ball Rating | Lean D (February-March 2026) [^] |
| Cook PVI for NH-01 | D+2 or D+3 [^][^][^] |
New Hampshire's First Congressional District is an open and competitive race. The 2026 election for New Hampshire's First Congressional District (NH-01) is an open contest due to incumbent Representative Chris Pappas (D) pursuing a Senate bid instead of seeking re-election in the district [^][^][^]. This situation makes the seat highly watched, especially given the district's general Democratic lean, which is indicated by a Cook Partisan Voting Index (PVI) of D+2 or D+3 [^][^][^].
Initial forecasts classify NH-01 with a Democratic advantage for 2026. Race ratings for the NH-01 election, as of February-March 2026, reflect this Democratic advantage. The Cook Political Report classifies the race as "Likely D," while both Sabato's Crystal Ball and Inside Elections rate it as "Lean D." These assessments have been confirmed by Ballotpedia [^].
7. How do the declared Republican candidates, such as Hollie Noveletsky and Melissa Bailey, compare in early fundraising and key endorsements ahead of the September 2026 primary?
| Hollie Noveletsky Q1 2026 Fundraising | $195,000 (first quarter of 2026) [^][^][^] |
|---|---|
| Hollie Noveletsky Cash on Hand | $405,000 (first quarter of 2026) [^][^][^] |
| Melissa Bailey Q1 2026 Fundraising | $13,648 (first quarter of 2026) [^] |
Hollie Noveletsky demonstrates a strong financial advantage and significant endorsements. She reported raising $195,000 in the first quarter of 2026 and concluded the period with $405,000 cash on hand [^][^][^]. A conservative business owner, Noveletsky also invested $265,000 of her personal funds into the campaign [^], with her campaign indicating a quarter of a million dollars raised in February 2026 alone [^]. Her campaign has announced a substantial list of endorsements, claiming over 50 in total and nearly 70 since the campaign's inception [^]. These supporters include national conservative organizations such as Maggie's List and the Associated General Contractors PAC (AGC PAC) [^][^][^][^], alongside prominent New Hampshire figures like State Senator Mark McConkey, Executive Councilor Joe Kenney, and former Rochester Mayor Paul Callaghan, as well as Nucor Executive Dan DiMicco [^][^][^].
In contrast, Melissa Bailey lags significantly in early fundraising and endorsements. Bailey, who serves as vice chair of the Bedford Republican Committee, reported raising $13,648 in the first quarter of 2026 [^]. While she has signed the U.S. Term Limits pledge [^] and emphasizes the importance of grassroots support for her campaign [^], Bailey has not widely reported securing prominent individual or organizational endorsements comparable to those amassed by Noveletsky [^][^][^].
8. What is the expected timeline and availability of district-level public opinion polling for the NH-01 race between the September primary and November general election?
| Primary Election Date NH-01 | September 8, 2026 [^][^] |
|---|---|
| General Election Date NH-01 | November 3, 2026 [^][^] |
| Polling Schedule Post-Primary | No published, reliable provider schedule found [^][^][^][^] |
No guaranteed schedule exists for NH-01 district-level polling. The retrieved sources offer no published or reliable schedule guaranteeing district-level public opinion polling for New Hampshire's 1st Congressional District (NH-01) between the September 8, 2026 primary and the November 3, 2026 general election [^][^][^][^]. Consequently, the expected availability of such polling during this specific post-primary period is uncertain [^][^][^][^]. Ballotpedia confirms these primary and general election dates for NH-01 [^][^].
Past district-level polling predates the primary election period. While district-level polling for NH-01 is feasible, as demonstrated by the UNH Survey Center's Granite State Poll, documented examples of such polling were released well before the September 8 primary [^][^][^][^]. For instance, fieldwork conducted from January 15–19, 2026, was noted in the research [^][^][^][^]. However, none of the sources provide a post-primary (September–November) district polling calendar, indicating these earlier examples do not establish the expected frequency or availability of polling after the primary election [^][^].
9. What is the historical impact of an open-seat contest versus an incumbent race on election outcomes in New Hampshire's 1st District?
| Pappas 2020 Win Margin | 5.11 points (51.32% vs 46.21%) [^] |
|---|---|
| Pappas 2022 Win Margin | 8.11 points (54.00% vs 45.89%) [^] |
| Pappas 2024 Win Margin | 8.1 points (54.0% vs 45.9%) [^] |
Chris Pappas has consistently won recent incumbent races with significant margins. Incumbent Chris Pappas has demonstrated strong electoral performance in New Hampshire's 1st District, securing victory in 2020 with an approximate 5.11-point margin against Matt Mowers [^]. His subsequent re-election in 2022 saw an increased margin of about 8.11 points over Karoline Leavitt [^]. Most recently, Pappas won the 2024 election with an approximate 8.1-point margin against Russell Prescott [^]. His success represents a break from a previous trend where incumbents frequently lost re-election in the district during the mid-2000s and 2010s [^].
The 2026 election will be an open-seat contest in a historically competitive district. The upcoming 2026 general election for New Hampshire's 1st District is projected to be an open-seat contest, as Chris Pappas is retiring [^][^]. Historically, this district has been highly competitive, with control changing hands in five out of eight elections during the mid-2000s and 2010s [^]. However, available research does not provide specific historical election outcome data or margin details for previous open-seat contests within the district [^][^]. This limits a direct historical comparison between incumbent and open-seat race impacts based on specific prior open-seat results.
10. What Could Change the Odds
Key Catalysts
The New Hampshire's 1st Congressional District race is an open seat following Pappas's Senate run [^] [^] . The district has a D+2 PVI, with 2024 Biden/Harris results at 51-49 [^][^]. Current race ratings from Cook indicate 'Likely D,' while Inside/Sabato rate it as 'Lean D' [^]. Polymarket's general election odds currently favor the Democratic candidate at 81% against the GOP's 20% [^].
Key catalysts include the primary races, with Polymarket showing Shaheen at 62% in the Democratic primary [^] . The Republican primary appears more competitive, with DiLorenzo at 47% and Noveletsky at 41% [^]. A UNH poll from January 2026 for the Democratic primary showed Shaheen with 33%, Howard at 10%, Sullivan at 8%, and a significant 39% undecided, indicating potential for shifts [^]. Upcoming key dates such as the filing deadline on 6/12/26, the primary on 9/8/26, and the general election on 11/3/26 will be critical [^].
Key Dates & Catalysts
- Expiration: November 03, 2027
- Closes: November 03, 2027
11. Decision-Flipping Events
- Trigger: The New Hampshire's 1st Congressional District race is an open seat following Pappas's Senate run [^] [^] .
- Trigger: The district has a D+2 PVI, with 2024 Biden/Harris results at 51-49 [^] [^] .
- Trigger: Current race ratings from Cook indicate 'Likely D,' while Inside/Sabato rate it as 'Lean D' [^] .
- Trigger: Polymarket's general election odds currently favor the Democratic candidate at 81% against the GOP's 20% [^] .
13. Historical Resolutions
No historical resolution data available for this series.
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