Tools chosen: polymarket_direct polymarket_related kalshi_related claude_news gdelt_news wikipedia code_execution

Sub-questions (Fermi decomposition)

Planner reasoning

This is a Polymarket question on a German state election 15+ months out; the primary anchor is the Polymarket price, and the decisive empirical input is current MV state polling (AfD has been polling far ahead of SPD in Mecklenburg-Vorpommern, ~35% vs ~15-20%). I need recent Landtagswahl polls, candidate/incumbency dynamics (Manuela Schwesig), and cross-venue prices on the same event.

# Current state Polling as of August 2026 shows AfD leading SPD by ~7-9 points (36% vs 29% in the latest INSA/Infratest dimap surveys), a gap that has narrowed somewhat from earlier 2026 levels (SPD was at 22-27% in late 2024/early 2026) but remains large enough that AfD is heavily favored to finish first in votes/seats for the first time in MV. Manuela Schwesig (SPD incumbent MP) is confirmed running as SPD's lead candidate; election is scheduled for 2026-09-20, no credible postponement/legal risk identified. # Timeline of key events - 2021-09-26 (confirmed): SPD won landslide 39.6% in prior MV election; AfD 2nd at ~17%; formed SPD-Linke government under Schwesig. [Wikipedia] - 2024-10 (reported): NDR/Statista poll — SPD 22%, AfD ~28%, CDU 19%, BSW 14% — AfD already leading. [claude_news] - 2026-03 (reported): AfD-MV internal leadership reshuffle; Nikolaus Kramer replaced as faction chief, Holm/Schult emerge as co-leaders. [claude_news] - 2026-06-18 (reported): Poll shows AfD with "record 9-point lead" over CDU nationally; attack on AfD politician reported. [gdelt/zerohedge] - 2026-07 (reported): Infratest dimap July poll — AfD 36%, SPD 29% (+2 from 27%), Linke 12%, CDU 9%, Greens 5%, BSW 4%. [infratest-dimap.de] - 2026-08-13 (reported): INSA poll confirms AfD 36% (Holm) vs SPD 29% (Schwesig); left-wing parties reported pouring "record sums" into anti-AfD campaigning in eastern states. [t-online.de, zerohedge] - 2026-08-18 (reported): t-online names Leif-Erik Holm as AfD Spitzenkandidat (conflicts with AfD-MV site naming Enrico Schult as state-list leader — likely co-leadership, unresolved which is formal top candidate). # Event Will SPD win the most seats in the 2026 Mecklenburg-Vorpommern Landtag election (2026-09-20)? # Outcomes to forecast Yes (SPD most seats) / No (SPD does not win most seats) # Kalshi market anchor No Kalshi-direct price returned for this specific ticker in the raw research (kalshi_direct tool output absent); only kalshi_related returned an unrelated FDP federal-election market (1%) and unrelated non-German markets — no usable Kalshi anchor found. **Primary anchor is therefore Polymarket: 15.5% YES**, up +0.5% (7d) and +1.0% (30d), range 12.0%-30.5% over 91 days, $96.5K volume — suggesting the market has drifted down from an early high (~30%) toward the mid-teens as AfD's lead solidified. # Sub-question answers 1. **Polymarket SPD/AfD prices?** SPD-most-seats priced at 15.5% (this market). No separate AfD-most-seats Polymarket market was found (polymarket_related returned 0 matches for MV/AfD keywords). 2. **Recent MV polls?** July 2026 Infratest dimap: AfD 36%, SPD 29%, Linke 12%, CDU 9%, Greens 5%, BSW 4%. Aug 2026 INSA: AfD 36%, SPD 29%. AfD-SPD gap ≈7 points. [infratest-dimap.de, t-online.de] 3. **Gap trend 12-18mo?** Widened first (Oct 2024: AfD 28% vs SPD 22%, gap 6pts) then widened further into 2025/early 2026 before narrowing slightly by mid-2026 (gap ~7-9pts, down from a wider mid-2026 peak per code_execution's cited 18-point gap — sources conflict on exact magnitude, but consensus recent gap is 7-9 points, not 18). [claude_news, code_execution] 4. **Schwesig running? Approval vs AfD candidate?** Yes, confirmed running as SPD lead candidate; described as SPD's only vote-getter and personally popular in an otherwise CDU/AfD-leaning state, but no direct head-to-head approval numbers vs. Holm/Schult were provided. [claude_news] 5. **Deviation from polls ~12mo out in 2024 comparators?** Not directly answered in research; no specific Thuringia/Saxony/Brandenburg/Saxony-Anhalt deviation data retrieved. Gap noted. 6. **Election-occurrence risk?** No evidence found of postponement, legal challenge, or AfD-ban proceedings affecting this election; election appears on-track for 2026-09-20. 7. **Other venue pricing?** No Kalshi-specific market found for this election; only unrelated German federal FDP market at 1%. # Key facts (high-confidence, factual) 1. [Wikipedia] SPD won 39.6% in 2021, AfD ~17% (2nd), CDU 13.3%. 2. [infratest-dimap.de, Jul 2026] AfD 36%, SPD 29%, Linke 12%, CDU 9%, Greens 5%, BSW 4% (below threshold). 3. [t-online.de, Aug 2026] INSA confirms AfD 36%, SPD 29%. 4. [Wikipedia] Schwesig incumbent MP since 2017, confirmed 2026 candidate. 5. [claude_news] SPD+Linke+Greens combined ≈45% vs AfD+CDU ≈46%; CDU rules out AfD coalition — relevant to governance but not to "most seats" question. # Cross-market signals - Kalshi related: no direct market found; unrelated FDP federal market at 1% (not comparable). - Polymarket: 15.5% YES, declining from 30.5% high, now trending flat-to-slightly-up over 30d. - Sportsbook implied: none available. # Analyst opinions and speculation - Zerohedge/sott.net (Aug 2026): framing AfD as "surging" in the East, prompting record left-wing anti-AfD spending — bearish for SPD winning outright. - code_execution model: statistical/normal-distribution model using a (possibly inflated) 18-pt gap estimates P(SPD most seats) ≈1-7%, central estimate 2-5%; notes MMP systems almost always give most seats to vote-plurality winner, so votes≈seats probability transfers directly. - Commentary frames AfD plurality as "historic" but concedes SPD could remain in government via red-red-green coalition even while placing second — irrelevant to this "most seats" market. # Directional lean per outcome - **Yes (SPD)**: Supporting — Schwesig personal popularity, SPD recovering from 22-27% floor to 29%, incumbency. Opposing — consistent 7-9pt (or larger) polling deficit to AfD across multiple pollsters/dates, national AfD momentum in eastern states, Polymarket pricing only 15.5%. - **No (AfD or other wins most seats)**: Supporting — persistent, multi-pollster AfD lead of 7-9+ points sustained for over a year; MMP systems reliably convert vote plurality to seat plurality. Opposing — some narrowing of gap since 2024/early 2026 troughs, red-red-green coalition arithmetic suggests SPD could retain governing role (not relevant to this specific "most seats" resolution). # Gaps / unknowns - No direct Kalshi YES price for this ticker was retrieved (only unrelated Kalshi markets); reliance is on Polymarket as sole cross-market data point. - Conflicting reports on magnitude of AfD-SPD gap (7-9pts per news polls vs 18pts cited in code_execution's own stat model) — reconciled here toward the more directly-sourced infratest-dimap/INSA figures (~7pt gap). - No historical deviation data for comparable 2024/2025 eastern state elections (Thuringia, Saxony, Brandenburg, Saxony-Anhalt) was retrieved to calibrate polling-to-actual variance. - AfD lead candidate identity ambiguous (Holm vs. Schult) — unlikely to be decision-relevant. - No confirmed election-risk factors (ban, postponement) found, but explicit ban-proceeding research was not conducted. # Calibration anchors - Polymarket current YES price: 15.5% (anchor). - Statistical model estimate: ~2-5% based on gap/variance, though built on a possibly overstated 18-pt gap; using the more reliable ~7-9pt gap, probability of SPD closing deficit is plausibly higher than model's 2-5% but still likely well under Polymarket's 15.5%, given AfD's multi-year, multi-poll consistent lead and no historical precedent for a second-place-in-votes party winning most seats under MMP. - Precedent: 2021 MV election saw SPD outperform its own pre-election trend, but starting deficit then was reversed (SPD led polls); current situation is structurally different — AfD, not SPD, holds the sustained lead.

1. Forecast 1 invokes a "2024 Brandenburg precedent" of an eastern SPD incumbent overcoming a similar deficit, but this is not in the brief's evidence at all—it's an unsubstantiated addition that inflates confidence upward (0.18 vs Polymarket's 0.155) without brief support, and the brief explicitly notes "no historical deviation data for comparable 2024/2025 eastern state elections... was retrieved." 2. Neither forecaster grapples with the brief's calibration anchor note that the statistical model (~2-5%) may actually be more reliable once the gap is properly measured at 7-9pts rather than 18pts, yet both land above even the higher end of that range near Polymarket's 15.5% without explaining why they discount the model further toward its floor. 3. Both forecasts treat Polymarket's 15.5% as essentially authoritative, but the brief flags this is thin ($96.5K volume) and highly volatile (12%-30.5% range in 91 days) — neither discusses the possibility that 15.5% itself is stale or mispriced given the *most recent* Aug 13 INSA confirmation of a persistent 36-29 gap, which arguably should have pushed the market (and their estimates) lower, not anchored near it. 4. Neither forecaster addresses the CDU/Linke/Greens vote share fragmentation (CDU 9%, Linke 12%, Greens 5% below threshold) as a scenario risk — e.g., if Greens/BSW fail to clear the 5% threshold, wasted votes could mechanically shift seat allocation in ways that either help or hurt SPD's seat share disproportionately to raw vote share, a factor the brief flags as a gap but both forecasts ignore entirely. 5. Both forecasts converge tightly (0.13–0.18) with high stated confidence (0.62–0.68), but given the brief's own uncertainty about which gap figure is correct (7pt vs 9pt vs previously-cited 18pt) and the ambiguous AfD candidate situation, a wider spread or lower confidence might be warranted — the tight convergence may reflect anchoring on each other's likely output rather than independent uncertainty quantification. 6. Neither forecast considers that the closing time (2026-09-20T00:00) is the *election date itself*, not a resolution date after results are known — if results reporting is delayed or contested (as with some MMP systems), there could be ambiguity in whether "most seats" is knowable exactly at close, a mechanical resolution-timing risk the brief's "election-occurrence risk" section didn't fully explore.

13% (65% confidence)

Yes: 13% No: 87%

Two independent pollsters (Infratest dimap July, INSA August 2026) agree on AfD 36% vs SPD 29%, a gap that has been sustained across more than a year, and MMP allocation reliably converts a vote plurality into a seat plurality, so the polling leader is very likely to take the most seats. The only usable cross-market anchor is Polymarket at 15.5%, which has drifted down from ~30% as AfD's lead solidified; I settle slightly below it because the most recent August poll re-confirmed the deficit and the naive statistical model on a 7-9pt gap implies far less than 15% for SPD. Against that, Brandenburg 2024 shows a popular eastern SPD incumbent can close a mid-single-digit AfD deficit through late anti-AfD mobilization, and reports of 'record sums' of anti-AfD spending plus Schwesig's personal popularity are precisely that mechanism — so I do not collapse toward the model's 2-5% floor. Threshold effects (Greens/BSW near 5%) are second-order noise relative to a 7-point gap and cut both ways. Net: No is strongly favored, with Yes at roughly 13%.

Total pipeline time: 234.2s