Tools chosen: polymarket_direct polymarket_related kalshi_related claude_news gdelt_news wikipedia code_execution claude_news

Sub-questions (Fermi decomposition)

Planner reasoning

This is a German state election question where polling is the dominant signal: AfD has been polling far ahead of the incumbent SPD in Mecklenburg-Vorpommern, so the key empirical questions are current poll levels, trend, and Manuela Schwesig's personal popularity/incumbency effect. I anchor on the Polymarket price, triangulate with Kalshi/Polymarket related markets, and pull recent polling news plus historical base rates for poll-to-result movement over ~9 months.

# Current state The 2026 MV Landtagswahl (Sept 20, 2026) has not yet occurred as of the latest research (data through ~mid-July 2026). All available 2026 polling consistently shows AfD leading SPD by 7–14 points; no market data point post-dates the election. Resolution depends on official seat counts, not vote share leads in polls. # Timeline of key events - 2021-09-26 (confirmed): SPD won 2021 MV election with 39.6% (landslide), AfD 2nd at 16.7%; SPD-Linke coalition formed under Schwesig. [Wikipedia] - 2025-06-25 (confirmed): MV Landtag passed (amended) motion to review an AfD ban procedure; no formal ban initiated. [claude_news] - 2026-01-14 (confirmed): Hamburg parliament rejected a Left-party motion for AfD ban procedure (separate state, contextual). [claude_news] - 2026-02-09/16 (confirmed, Forsa poll): AfD 37%, SPD 23% — widest gap of the cycle (14 pts). [Wikipedia/dawum] - 2026-02-25 (reported): Lower Saxony motion for AfD ban review ongoing (contextual, not MV-specific). - 2026-03-08 (confirmed): Baden-Württemberg election — AfD surged to 18.8% (+9.1pts), SPD collapsed to 5.5%. - 2026-03-22 (confirmed): Rhineland-Palatinate election — AfD reached 19.5% (best-ever western state result, won a district outright), SPD fell to 25.9% (historic low, still lost lead to CDU). - 2026-05-07/11 (confirmed, Infratest dimap): AfD 36%, SPD 27% (9-pt gap). [Wikipedia] - 2026-06-11/18 (confirmed, INSA/Nordkurier): AfD 35%, SPD 28% (7-pt gap). - 2026-07-09 (confirmed, Infratest dimap/NDR): AfD 36%, SPD 29% (7-pt gap) — most recent poll. - Ongoing (reported): Procedural dispute over SPD-aligned election committee members challenging AfD candidate list validity in MV; list ultimately confirmed valid by other committee members — no indication of postponement/ban affecting the election date. [claude_news] # Event Will SPD win the most seats (not necessarily an outright majority) in the September 20, 2026 Mecklenburg-Vorpommern Landtag election? # Outcomes to forecast - Yes (SPD wins most seats) - No (SPD does not win most seats, i.e., AfD or another party does) # Kalshi market anchor No Kalshi-direct data returned for this specific market (ticker appears to be a Polymarket CTF ID, not a native Kalshi ticker). The corresponding **Polymarket price is the closest direct-market anchor: currently 15.0% YES**, down from a 30.5% high and up from an 11.5% low over the 91-day window tracked; 7-day trend -0.5pp, 30-day trend -2.5pp (drifting lower). Volume $92,387 total — modest but non-trivial. Kalshi-related search found no MV/AfD/Germany-election matches beyond generic unrelated markets (UK, US, Canada) with no arbitrage relevance. # Sub-question answers 1. **AfD vs SPD poll gap (2025-2026):** Latest polls (Feb–Jul 2026): Forsa (Feb) AfD 37/SPD 23 (14pt gap); Infratest dimap (May) AfD 36/SPD 27 (9pt); INSA (Jun) AfD 35/SPD 28 (7pt); Infratest dimap (Jul) AfD 36/SPD 29 (7pt). DAWUM weighted average: AfD 35.7%/SPD 28.7% (~7pt gap). [claude_news, Wikipedia, dawum.de] 2. **12-month trend:** Gap has narrowed modestly from 14pts (Feb) to ~7pts (Jul), suggesting slight SPD stabilization/recovery rather than AfD consolidation, but AfD has led every single poll since at least Sept 2025. [claude_news] 3. **Schwesig as Spitzenkandidatin:** Confirmed — Schwesig remains SPD's Spitzenkandidatin and incumbent Minister-President seeking re-election; no personal approval-vs-party polling breakdown found in research. [t-online.de, Wikipedia] 4. **Historical polling shifts / comeback base rate:** No specific historical base-rate data was found in research; the Fermi decomposition question is unanswered by sources. Monte Carlo modeling (code_execution) substitutes for this: with a 21-point gap and realistic volatility (std 5-7pts), P(overtake)≈0.5-4%; a 10-point gap would yield ~15%. 5. **March 2026 BW/RLP as AfD-performance signal:** Both elections showed AfD roughly doubling its prior vote share (BW: 9.8%→18.8%; RLP: ~9%→19.5%, best-ever western result, won a district outright) while SPD collapsed to record lows in both (BW 5.5%, RLP 25.9%). This suggests AfD has been outperforming its already-strong polling in 2026, not underperforming — a bearish signal for SPD in MV. [claude_news] 6. **Election-occurrence risk:** No evidence of postponement. AfD-ban motions in various states (Hamburg rejected, Lower Saxony ongoing, MV passed with amendments in 2025) remain unresolved/rejected — no ban affecting MV election eligibility. A dispute over AfD candidate-list validity in MV was resolved with the list confirmed valid. [claude_news] # Key facts (high-confidence, factual) 1. [Wikipedia] 2021 result: SPD 39.6%, AfD 16.7% — SPD's best postwar result. 2. [claude_news/Wikipedia] Every MV poll since ~Sept 2025 through July 2026 shows AfD leading SPD by 7-14 points; no poll shows SPD ahead. 3. [dawum.de] Latest weighted average (Jun-Jul 2026): AfD 35.7%, SPD 28.7%. 4. [claude_news] BW (Mar 8) and RLP (Mar 22) 2026 elections both saw AfD roughly double vote share vs. prior baseline and outperform trajectory; SPD hit record lows in both. 5. [Wikipedia] Schwesig confirmed incumbent MP and SPD Spitzenkandidatin for 2026; Holm confirmed AfD Spitzenkandidat. 6. [Polymarket] Current YES price 15.0%, down from a 30.5% high three months prior. # Cross-market signals - Kalshi related: no MV/Germany-specific markets found; irrelevant comparisons only. - Polymarket (this exact market): 15.0% YES, declining trend (-2.5pp/30d), moderate volume ($92k total). - Sportsbook implied: none available. # Analyst opinions and speculation - t-online/Nordkurier framing: media consistently describes AfD as having a "clear lead" (klarer Vorsprung), not a close race. - taz.de headline ("Wie eine AfD-Regierung doch noch verhindert werden könnte") implies analysts view an AfD plurality as the base case, with commentary focused on how other parties might block AfD from *governing* (coalition-forming), not on SPD overtaking AfD in seats. - code_execution Monte Carlo: even generous volatility/correlation assumptions yield only 1-4% P(SPD overtakes AfD) at current ~21pt underlying model gap (though live poll gap is closer to 7-9pts per most recent data — reconciliation note below). # Directional lean per outcome - **Yes (SPD wins most seats):** Weak support — Schwesig incumbency, gap narrowing from 14 to ~7pts since Feb. Opposing: zero polls in 2026 show SPD ahead; AfD outperformed polls in two March 2026 comparable elections; Polymarket prices only 15%. - **No (SPD does not win most seats):** Strong support — consistent, persistent AfD lead across all 2026 polls; AfD momentum confirmed by BW/RLP overperformance; Polymarket assigns 85% to non-SPD outcome (though this includes CDU/other winning, not certainty for AfD specifically). # Gaps / unknowns - No native Kalshi-direct price was returned for this ticker; anchor relies on Polymarket only. - No polling for CDU/Linke overtaking either party for seat-count purposes (question resolves on seats, not vote share; MV's proportional system with 5% threshold could create seat-allocation nuances, e.g., BSW/Greens near threshold affecting proportionality). - No coalition-formation analysis (irrelevant to "most seats" resolution, but relevant to broader race narrative). - No historical base-rate data found for large poll-gap reversals in German state elections (sub-question 4 unanswered by sources). # Calibration anchors - Polymarket current YES price: 15.0% (anchor for this exact market). - Model-based estimate (Monte Carlo, ~7-9pt live gap per most recent polls, not the 21pt gap used in the tool's base case): using the tool's own sensitivity table, a 10pt gap implies ~15% P(SPD wins), a 15pt gap ~6%. Given current gap sits near 7-9pts, true model-consistent estimate is likely modestly higher than the tool's headline "1.5%" (which used a stale/wider 21pt assumption) — plausibly in the 10-20% range, roughly consistent with Polymarket's 15%.

1. Neither forecast addresses the seat-vs-vote-share distinction explicitly: MV's proportional system with 5% threshold could mechanically favor SPD if AfD-adjacent or fringe votes are "wasted" (e.g., BSW/Greens near threshold), meaning SPD could theoretically win seat plurality despite a vote-share deficit — the brief flags this as an unresolved gap that both forecasts ignore. 2. Both forecasts treat the Monte Carlo "1-4%" figure as essentially superseded by the market price without independently reconciling why a live 7-9pt gap yields such divergent model outputs (1-4% vs. 15%) depending on which base assumption is used; neither explains why they trust the 15% recalibrated range over the tool's raw 1-4% output, leaving the reasoning under-scrutinized. 3. Neither forecaster considers tail scenarios like a late-campaign shock, scandal, or AfD list disqualification post-hoc (the candidate-list dispute was resolved, but campaign-period litigation risk over two remaining months isn't addressed) that could suppress AfD seats independent of polling. 4. Both anchor tightly to Polymarket's 15%/14% with only ~1-2pt deviation, but the brief notes this market has only $92k volume and swung from an 11.5% low to 30.5% high over 91 days — a market this volatile with modest liquidity warrants wider uncertainty bands than the near-point-estimate confidence (0.70/0.69) implied. 5. Neither forecast weighs the BW/RLP "AfD overperforms polls" evidence against the fact that both were western states with different AfD/SPD baselines than MV's east-German context (where SPD has a much stronger historical base, per the 39.6% 2021 result) — treating that comparison as a clean bearish signal for SPD without noting the reference-class mismatch. 6. Both converge suspiciously close to each other (16% vs 14%) and to the market, suggesting anchoring bias rather than independent triangulation; given the acknowledged model instability (1-4% vs 10-20% depending on gap assumption), a genuinely independent estimate might justify more spread or explicit sensitivity ranges rather than single-point convergence near Polymarket.

14% (70% confidence)

Yes: 14% No: 86%

Every MV poll from Sept 2025 through July 2026 shows AfD ahead of SPD, with the current weighted average around AfD 35.7% / SPD 28.7% (~7pt gap), and media/analyst framing treats an AfD plurality as the base case (debate centers on blocking an AfD government, not on SPD overtaking). The narrowing from 14pts to ~7pts plus Schwesig's incumbency provide a genuine comeback path over two remaining campaign months, which is why I stay meaningfully above the raw Monte Carlo output rather than at 1-4%. The critique's seat-vs-vote-share point is real but weak in direction: MV's proportional allocation with a 5% threshold redistributes wasted votes roughly proportionally and would rarely flip a 7-point plurality deficit; likewise late-campaign shocks cut both ways (AfD has recently overperformed polls in BW/RLP, albeit in western reference classes). Given modest Polymarket liquidity ($92k) and its 11.5%-30.5% range, I accept wider uncertainty but see no evidence justifying a large deviation from the ~15% anchor, so I settle marginally below it at 14% for Yes.

Total pipeline time: 274.1s