Scan: Will New Hampshire Governor winner be Republican party and New Hampshire Senate winner be Democratic party? — Republican Governor, Democratic Senator

1. Planner Fable 5.1 · Fermi decomposition + tool plan

Tools chosen: kalshi_direct kalshi_related polymarket_related article_search claude_news wikipedia code_execution

Sub-questions (Fermi decomposition)

What are the current Kalshi/Polymarket prices for the individual NH Governor (Republican win) and NH Senate (Democratic win) markets, and does the combo price imply plausible correlation between them?
Is Kelly Ayotte running for re-election in 2026, what is her approval rating in NH, and who is the Democratic gubernatorial challenger and how do they poll head-to-head?
Who are the Republican and Democratic candidates in the 2026 NH US Senate race (Pappas vs. John E. Sununu / Scott Brown), and what do recent general-election polls show?
What is the national 2026 midterm environment (generic ballot, Trump approval) and how does it historically affect NH federal vs. state races?
What is the historical base rate of NH electing a Republican governor and Democratic US senator in the same cycle (e.g., 2022, 2016, 2020)?
Are there any developments (scandals, retirements, primary upsets, redistricting or ballot issues) that could shift either race away from the current favorite?

Planner reasoning

This is a combo market on the 2026 New Hampshire elections: Republican Gov. Kelly Ayotte's re-election bid and the open US Senate seat (Jeanne Shaheen retiring) where Democrat Chris Pappas faces a Republican (John E. Sununu or Scott Brown). Split-ticket outcomes are historically common in NH (Sununu/Hassan 2022), so the key drivers are Ayotte's approval and polling, the Senate primary field and general-election polling, and the national 2026 environment. Kalshi's direct combo price plus the two component markets (and Polymarket equivalents) let us check whether the combo is priced consistently with the marginals given positive/negative correlation.

2. Research Parallel tool calls

tool	status	time	items	summary
kalshi_direct	OK	0.2s	1	## This Market's Kalshi Data Republican Governor, Democratic Senator (KXNHSENGOVCOMBO-26NOV-REPDEM) - Current price (probability): 70.00% - 7-day price change: +1.00% - 30-day price change: -1.00% - Average daily volume: 442 contracts - Price range: 40.00% - 77.00% - Data points: 38 days
kalshi_related	OK	12.6s	2	2 related markets / summaries. series KXNHSENGOVCOMBO: 0 markets (skipped 4 no-signal) \| series KXSENATENH: 0 markets (skipped 0 no-signal) \| series KXGOVNH: 0 markets (skipped 0 no-signal) \| series KXSENATERACE: 0 markets (skipped 0 no-signal) \| series KXGOVRACE: 0 markets (skipped 0 no-signal) \| k
polymarket_related	OK	0.1s	0	Scanned 100 active Polymarket markets, kept 0 matches. keyword 'New Hampshire Senate': 0 markets \| keyword 'New Hampshire Governor': 0 markets \| keyword 'Ayotte': 0 markets \| keyword 'Pappas': 0 markets \| keyword 'Sununu': 0 markets
article_search	OK	13.3s	15	Fetched 15 unique articles across 4 queries (lookback=60d). 'New Hampshire 2026 Senate race poll Pappas Sununu': 10 articles \| 'Kelly Ayotte re-election 2026 approval poll': 10 articles \| 'New Hampshire governor race 2026 Democratic candidate': 10 articles \| 'Scott Brown John Sununu Republican Senat
claude_news	OK	21.7s	17	## Key Findings Governor Race (Ayotte R vs. Warmington D) - Nominees confirmed after Sept. 8, 2026 primary: Incumbent Republican governor Kelly Ayotte is running for re-election to a second term in office , facing Democrat Cinde Warmington. (Ballotpedia/Wikipedia) - Latest UNH poll (late Aug 2
wikipedia	OK	12.6s	4	Fetched 4 Wikipedia entries (0 missing pages).
code_execution	OK	37.0s	0	## Key Findings: NH Governor (R) AND Senate (D) — Joint Probability Analysis Independence baseline (using placeholder market prices P(R Gov)=0.75, P(D Sen)=0.70): - Joint P(R Gov ∩ D Sen) under independence = 0.75 × 0.70 = 0.525 (52.5%) - Frechet-Hoeffding bounds on the joint probability: *

3. Evidence Brief Sonnet 5 · 7055 chars

# Current state Both parties have set their nominees for the Nov 3, 2026 general election following the Sept 8, 2026 primary: Republican incumbent Gov. Kelly Ayotte (running for a 2nd term) vs. Democrat Cinde Warmington for Governor; Democrat Chris Pappas vs. Republican John Sununu for the open Senate seat (Shaheen retiring). Ayotte is a clear favorite (Likely R); the Senate race is rated a Toss-up with conflicting polls. Resolution requires BOTH races to land on the stated party — not just polling leads. # Timeline of key events - 2024-11: Ayotte (R) elected Governor, defeating Joyce Craig (D) — confirmed (Wikipedia). - 2025-01: Ayotte sworn in as governor; occasional friction with GOP-controlled legislature (33 vetoes in last session) — confirmed (CNN). - 2026-04-24: UNH poll shows Ayotte leading Warmington 47%-39% (10% undecided) — confirmed (Boston Globe/UNH). - 2026-06: Earlier Senate polling reportedly showed Pappas ahead of Sununu — reported (Newsweek/UNH via claude_news). - 2026-08-27/28: UNH poll shows Ayotte's lead widening over Warmington (49%-39%, approval 49/42) and Sununu edging Pappas 45%-43% — confirmed (UNH/WCAX). - 2026-09-03: Cook Political Report and Sabato's Crystal Ball move NH Senate from Lean/Tilt D to Toss-up — confirmed (Cook Political). - 2026-09-08: NH state primary — Ayotte wins GOP gov nomination easily (2 challengers); Pappas wins Dem Senate nomination (65% vs Manzur); Sununu wins GOP Senate nomination (68.5% vs Brown) — confirmed (Wikipedia, CBS, NHPR, CNN). - 2026-09-08/10: Post-primary Rasmussen poll shows Pappas leading Sununu 45%-34% (11 pts), contradicting the late-Aug UNH result — reported, conflicting with UNH poll. - 2026-09-10: Inside Elections moves NH Senate from Tilt R to Toss-up — confirmed. - Ongoing (as of research cutoff): RealClearPolling average has Pappas +2; prediction markets (per claude_news) reportedly price Democratic Senate win ~83% — reported, not independently verified against Kalshi-direct data here. # Event Will the 2026 NH Governor winner be Republican AND the 2026 NH Senate winner be Democratic (both must occur)? # Outcomes to forecast - Yes (R Governor + D Senate) - No (any other combination) # Kalshi market anchor **KXNHSENGOVCOMBO-26NOV-REPDEM: YES = 70.00%** (7-day: +1%, 30-day: −1%; range 40%-77% over 38 days; avg daily volume 442 contracts). This is the primary consensus to beat. # Sub-question answers 1. **Individual market prices / correlation** — A related Kalshi listing shows "GOVPARTYNH...R" (Ayotte) at 88% and "SENATENH...R" at 9% (i.e., ~91% implied D Senate), though tickers are oddly labeled "-28-" and may reference a different cycle — treat with caution. Naive independence of ~0.88 R-gov × ~0.91 D-sen ≈ 80%, higher than the 70% combo price, suggesting the combo market is pricing in some negative correlation or extra uncertainty (code_execution analysis separately used placeholder marginals of 75%/70% independence ≈52.5%, structurally lower than Kalshi's 70%). 2. **Ayotte re-election / approval / opponent** — Yes, Ayotte is running for re-election vs. Democrat Cinde Warmington. Aug 2026 UNH poll: Ayotte 49% approve/42% disapprove; leads Warmington 49%-39% (WCAX/UNH). Race rated Likely R (Cook, Sabato). 3. **Senate candidates/polls** — Chris Pappas (D) vs. John Sununu (R), confirmed nominees post-Sept 8 primary. Polls conflict: UNH (late Aug) has Sununu +2 (45-43); Rasmussen (post-primary) has Pappas +11 (45-34); RCP average has Pappas +2. Nonpartisan raters moved to Toss-up in early Sept 2026. 4. **National environment** — Jan 2026 polling: Democrats +11 generic ballot nationally; Trump approval only 32% in NH, while Ayotte's approval remained net-positive — indicating Ayotte outperforms the national GOP brand in-state (favorable split-ticket dynamic). 5. **Historical base rate** — In NH's 5 concurrent Gov+Senate cycles since 2010 (2010,2014,2016,2020,2022), the R-Gov/D-Sen combination occurred in 2016, 2020, 2022 = 60% base rate, the dominant recent pattern (code_execution). 6. **Disruptive developments** — None major reported beyond normal primary dynamics; Trump endorsed Sununu (a mild complicating factor given Trump's low NH approval); Ayotte's occasional friction with her own legislature over vetoes noted but not race-altering (CNN). # Key facts (high-confidence, factual) 1. [Wikipedia] Ayotte (R) is the incumbent governor seeking re-election vs. Warmington (D); nominees finalized 2026-09-08. 2. [Wikipedia/CBS] Pappas (D) vs. Sununu (R) are confirmed Senate nominees for Shaheen's open seat. 3. [UNH/WCAX] Ayotte leads Warmington 49-39 (Aug 2026); approval 49/42. 4. [Cook/Sabato/Inside Elections] NH Senate race rated Toss-up as of Sept 2026, moved from Lean/Tilt D or Tilt R. 5. [Kalshi] Combo market YES priced 70%, relatively stable (±1% over 7/30 days). # Cross-market signals - Kalshi related: GOVPARTYNH "-28-R" 88% (Ayotte/R gov), SENATENH "-28-R" 9% (implying ~91% D Senate) — ticker year labeling ambiguous, use cautiously. - Polymarket: No matching markets found (0 results). - Sportsbook implied: N/A (not a sports market); claude_news mentions unspecified "prediction markets" pricing D Senate win at ~83%, unverified independently. # Analyst opinions and speculation - Cook Political: "hard time seeing Republicans pulling off the upset" in tough midterm environment, despite recent GOP bullishness after an Emerson tie poll. - Newsweek/analysts frame Senate race as "knife-edge," highlighting Trump endorsement of Sununu as double-edged given his low NH approval. - claude_news synthesis: joint outcome "plausible but not assured," hinging on Pappas holding a lead in a race that tightened over summer. # Directional lean per outcome - **Yes (R Gov + D Sen)**: Supported by Ayotte's solid, growing lead (Likely R) + historical 60% base rate for this exact combo + Democratic-leaning national environment favoring Pappas in Senate. Opposed by genuine Senate toss-up status and one recent poll (UNH) showing Sununu ahead. - **No**: Supported by Senate race volatility/toss-up rating and Trump endorsement momentum for Sununu; would occur if Sununu wins OR (less likely) if Warmington upsets Ayotte. # Gaps / unknowns - No Polymarket data for cross-validation. - Ambiguity around "-28-" ticker labels for related Kalshi markets — unclear if same 2026 cycle or a future one; reduces confidence in the 88%/9% figures as direct comparators. - No clear resolution of conflicting Senate polls (UNH vs. Rasmussen vs. RCP); underlying likely-voter models/methodology not detailed. - Exact independent Kalshi prices for standalone 2026 NH Governor and NH Senate markets not directly confirmed (only inferred/related tickers). # Calibration anchors - Kalshi current YES price: **70%** (primary anchor). - Historical NH base rate for this exact combination (R Gov/D Sen) in concurrent cycles: **60%** (3 of last 5: 2016, 2020, 2022). - Independence-based estimate from marginal probabilities: **~52.5-80%** depending on which marginals used (wide range reflects data ambiguity).

4. Forecasters Fable 5.1 + GPT-5.6 Sol · in parallel

claude-fable-5-1

52% conf

Yes	68%
No	32%

Kalshi prices the R-Gov/D-Sen combo at 70%, stable over 7/30 days, and this is the primary anchor. Ayotte is a solid Likely R favorite (49-39 UNH, net-positive approval despite Trump at 32% in NH), so the joint outcome hinges almost entirely on Pappas vs. Sununu, which raters call a Toss-up but where the RCP average (Pappas +2), a D+11 national generic ballot, and a Rasmussen +11 poll lean Democratic — roughly 70-75% Pappas. Multiplying ~0.88 (Ayotte) by ~0.73 (Pappas) with a small haircut for wave-scenario correlation (a strong wave either way breaks the split-ticket outcome) yields the high-60s, consistent with the market and the 60% historical base rate for this exact NH combination. I shade slightly below Kalshi given genuine Senate polling conflict (UNH had Sununu +2) and Trump's endorsement momentum for Sununu.

gpt-5.6-sol

67% conf

Yes	68%
No	32%

Kalshi’s 70% YES price is the primary anchor, and the evidence broadly supports the split-ticket outcome, though I shade slightly lower because the Senate race remains genuinely uncertain. Ayotte’s 49%-39% polling lead, positive approval, and Likely R ratings make a Republican gubernatorial win substantially more likely than not. For Senate, the Pappas +2 polling average and Democratic national environment favor Pappas, but the conflicting Sununu +2 and Pappas +11 polls plus Toss-up ratings limit confidence. New Hampshire’s 60% recent base rate for this exact party combination and Ayotte’s clear outperformance of the national GOP brand reinforce the split-ticket case, while ambiguous standalone-market tickers deserve little weight.

5. Devil's Advocate Sonnet 5 · red-team critique

Both forecasters converge on 0.68, essentially anchoring tightly to Kalshi's 70% with only a token haircut, but neither seriously engages with the "-28-" cross-market signal implying independence math of ~80% (0.88×0.91), which — if that data is even roughly valid — should push their estimate toward or above Kalshi rather than below it; they dismiss it as "ambiguous" without exploring why Kalshi's combo might be priced lower (e.g., correlation risk that a wave election flips both seats the same direction, which they mention only briefly).

Neither forecaster explicitly quantifies the Warmington-upset tail risk (Ayotte losing the Governor race), which the brief frames as "less likely" but nonzero — Forecast 1 uses 0.88 for Ayotte, but historical NH gubernatorial polling leads of 10 points rarely collapse, so this marginal seems reasonable, yet it's asserted rather than justified against a reference class of polling-lead-to-outcome accuracy at this stage (early Sept, 8 weeks out).

Both treat the Rasmussen (+11 Pappas) and UNH (Sununu +2) polls as roughly offsetting into "Pappas +2 RCP average," but Rasmussen is widely considered to have a methodological house effect/lean, and neither forecaster discusses potential poll-weighting quality differences that might make the true Pappas lead smaller than the naive average suggests — this is a reference-class/poll-averaging error worth flagging.

Neither forecaster addresses the historical base rate's small sample size (3 of 5 cycles, n=5) with appropriate skepticism — treating 60% as a meaningful independent data point rather than a noisy signal from a tiny sample that happens to point the same direction as current polling, which is somewhat circular reasoning support.

Both forecasters land on identical 0.68 point estimates via similar multiplicative logic, which is suspicious given they're supposed to be independent — this convergence suggests anchoring bias to Kalshi's 70% rather than genuine independent triangulation, and neither explores scenarios where the combo could be priced too efficiently (e.g., thin volume of 442 contracts/day) allowing for mispricing that a truly independent estimate might catch.

Neither forecaster grapples with the Trump-endorsement-of-Sununu factor as a two-sided risk: while framed as "double-edged" in the brief, a highly engaged Trump base turning out for the primary winner (Sununu won his primary 68.5%) could also suppress Pappas-leaning independent turnout in a way pure polling averages don't capture, which is a scenario neither model weights explicitly.

6. Aggregator Fable 5.1 · final calibrated forecast

69% (60% confidence)

Yes: 69% No: 31%

Kalshi prices the R-Gov/D-Sen combo at 70% with a stable 7/30-day trend, and both forecasters converged on 68% via consistent multiplicative logic (≈0.88 Ayotte × ≈0.75 Pappas with a correlation haircut). The critique's points cut in both directions: the '-28-' cross-market signal implying ~80% under independence argues for staying at or above Kalshi, while the Rasmussen house-effect concern and Trump-driven Sununu turnout argue for a slightly smaller Pappas edge than the naive RCP average suggests. Neither exposes a shared directional flaw, so I stay essentially at the market anchor, with a tiny shade for genuine Senate toss-up status and the negative correlation risk that a wave election breaks the split-ticket outcome. Ayotte's 10-point lead and net-positive approval despite Trump's 32% NH approval make the governor leg high-confidence, so the residual uncertainty is almost entirely the Pappas-Sununu race.

Pipeline Timing

Total pipeline time: 141.8s

Per-tool research timings shown in the Research section above.