Tools chosen: kalshi_direct kalshi_related polymarket_related wikipedia claude_news gdelt_news code_execution

Sub-questions (Fermi decomposition)

Planner reasoning

This is a long-dated Kalshi political market on Ghana's December 2028 parliamentary election, where the NDC won a landslide (~180+ of 276 seats) in December 2024. The key drivers are Ghana's strong historical two-term alternation pattern (incumbent party typically wins re-election after one term), current Mahama administration approval/economic performance, and any early polling. Market price on Kalshi is the primary anchor; cross-venue and news checks fill in fundamentals.

# Current state NDC (led by President Mahama) currently holds a dominant parliamentary supermajority (184/276 seats) after its Dec 2024 landslide win; the next parliamentary election is not until Dec 2028 (~2 years+ away). Kalshi currently prices NDC to repeat at 61% YES, reflecting incumbency strength tempered by long time horizon and Ghana's history of single-term-and-out swings at open-seat contests (not applicable here since this is a first-term-incumbent bid). # Timeline of key events - 2024-12-07 (confirmed): General election held; NDC wins parliamentary landslide, 184/276 seats (NPP 88, independents 4); Mahama wins presidency outright, no runoff. [Wikipedia] - 2025-01 (confirmed): Mahama inaugurated as president for a non-consecutive second term. - 2025–2026 (confirmed): Macroeconomic turnaround — inflation falls from 54% peak to 3.4% (Apr 2026), GDP grows 5.8% (2024)/6% (2025), cedi strengthens, Fitch/Moody's/S&P upgrade Ghana's credit rating. [World Bank, claude_news] - 2026-05 to 2026-08 (confirmed/reported): Mixed approval polling — Global InfoAnalytics shows Mahama approval rising 67%→71%→72% (Mar–Jul 2026); competing IEA poll shows decline 68%→58.9% (Dec 2025–May 2026), linked to power outages ("dumsor") and corruption concerns. [ghanamma.com, graphic.com.gh] - 2026 (ongoing, reported): NPP conducting regional executive elections/internal reorganization ahead of 2028; various NDC internal party timeline/executive elections also announced for 2026. [ghanasky.com, ghanamma.com] - 2026-06 to 2026-08 (rumored/opinion): Media commentary debates 2028 NDC candidates/strategy (e.g., "Asiedu Nketia commands pathway to victory"); an "APL Poll" reportedly shows Bawumia leading NPP hopefuls for 2028 — no comparable NDC vs. NPP head-to-head poll surfaced. [thechronicle.com.gh, newsghana.com.gh] - No confirmed by-election losses, major defections, or NPP resurgence signals found in 2025-2026 reporting (per claude_news search). # Event Will NDC win the next (2028) Ghanaian parliamentary election? # Outcomes to forecast Yes (NDC wins) / No (NDC does not win) # Kalshi market anchor **KXGHANAPARLI-28-NDC: currently 61% YES**, up from 56% over the past 7-30 days (thin liquidity: ~2 contracts/day avg, only 3 data points). This is the primary anchor to beat — market has been drifting upward but data is very sparse/illiquid, limiting confidence in price discovery. # Sub-question answers 1. **Kalshi price/history** — 61% YES currently; +5pts over both 7-day and 30-day windows; extremely low volume (avg 2 contracts/day, only 3 days of data), so the price reflects limited market conviction. [kalshi_direct] 2. **2024 seat breakdown** — NDC 184/276 (66.7%), NPP 88, independents 4 — a landslide majority, among the largest in Fourth Republic history. [Wikipedia] 3. **Historical base rate for first-term incumbent re-election** — Perfect record: 4/4 (100%) in 1996, 2004, 2012, 2020; by contrast, no party has ever won a 3rd consecutive term (0/4 in 2000, 2008, 2016, 2024). 2028 falls into the favorable "first-term incumbent" bucket. Smoothed estimates (Laplace/Jeffreys) put true base rate at 83-90%, with wide CI due to n=4. [code_execution] 4. **Presidential/parliamentary coupling** — Not directly detailed in research, but every cited election shows the presidential winner's party also won parliament (NDC 2024 swept both); Ghana's Fourth Republic shows tight coupling between presidential and parliamentary outcomes historically. 5. **Economy/approval 2025-2026** — Inflation down sharply (54%→3.4%, ticking back up to 3.7% by May 2026); GDP growth 5.8-6%; credit rating upgrades (Fitch/Moody's/S&P); cedi strengthened then partially retraced. Approval: 58.9-72% range depending on pollster, generally net positive; concerns include power outages ("dumsor") and corruption. [worldbank.org, claude_news] 6. **By-elections/defections/polls** — No significant by-election losses or high-profile defections found for NDC 2025-2026. NPP is rebuilding organizationally (regional executive elections). No head-to-head NDC vs NPP horse-race poll found for 2028. [claude_news, gdelt_news] 7. **Other venues** — Polymarket has zero matching markets on Ghana. Related Kalshi market KXGHANAPRES-28-MBAW (Bawumia to win presidency) prices at only 22% (up from 10-16%), implying NPP presidential chances are seen as weak — roughly consistent with/supportive of NDC parliamentary dominance given historical coupling. [kalshi_related] # Key facts (high-confidence, factual) 1. [Wikipedia] NDC won 184/276 seats in Dec 2024 (66.7%), a landslide. 2. [code_execution] Every first-term incumbent in Ghana's 4th Republic (1996,2004,2012,2020) won re-election (4/4). 3. [World Bank/claude_news] Inflation fell from 54% peak to ~3.4-3.7%; GDP growth 5.8-6%; credit upgrades from all 3 major agencies. 4. [kalshi_related] Rival NPP presidential candidate (Bawumia) priced at only 22% to win 2028 presidency. 5. [claude_news] No major by-election losses/defections detected for NDC through mid-2026. # Cross-market signals - Kalshi related: KXGHANAPRES-28-MBAW (NPP's Bawumia for president) at 22% — implies NPP weak on presidential side too, consistent with NDC parliamentary dominance given historical party coupling. - Polymarket: No Ghana-related markets exist (0 matches). - Sportsbook implied: None available. # Analyst opinions and speculation - Kwesi Pratt (NDC-aligned commentator) cautions against "assuming victory" in 2028 — signals some intra-party concern about complacency. [gdelt_news] - Pro-NDC commentary (newsghana.com.gh) touts "pathway to victory" via party figure Asiedu Nketia — self-serving, low evidentiary value. - KNUST professor argues Mahama's approval "should be below 15%" — outlier, unsupported by poll data, reflects partisan opposition rhetoric. - Academic/pollster framing suggests NPP is in rebuilding mode (regional elections) but no signs of imminent competitiveness threat. # Directional lean per outcome - **Yes (NDC wins)**: Strong support — 100% historical base rate for first-term incumbents, landslide 2024 majority, strong macro turnaround (disinflation, growth, credit upgrades), approval ratings net positive (58-72%), NPP presidential candidate priced low (22%) on related market, no by-election reversals detected. - **No (NPP or other wins)**: Weaker support — long 3-year horizon leaves room for macro shocks (Ghana's history of debt crises has flipped elections, e.g., 2016), cedi/inflation showed mid-2026 wobbles, power outage ("dumsor") discontent, corruption concerns, and NPP is actively reorganizing. Small sample base rate (n=4) carries wide uncertainty (Wilson CI down to 51%). # Gaps / unknowns - No direct NDC-vs-NPP 2028 parliamentary horse-race polling found (only presidential-preference/approval polls). - Kalshi market itself is extremely illiquid (2 contracts/day) — price may not reflect informed consensus. - No detail on constituency-level dynamics, redistricting, or election-timing risk (constitutional referendum tied to 2027 assembly elections could reshape dynamics). - Unclear how the Kalshi question resolves if no single party wins outright majority (coalition scenarios not addressed in rules). # Calibration anchors - Kalshi current YES price: **61%** (anchor, thin volume caveat). - Historical base rate for first-term incumbents in Ghana: **100% (4/4)**, smoothed to ~83-90% for small-sample correction. - Blended quantitative estimate from base-rate model: **~75-80%** central, range 60-85%. - Related market (NPP presidential candidate at 22%) implies opposition weakness, modestly supportive of higher NDC parliamentary probability than raw base rate alone.

1. Both forecasts converge tightly (74% vs 76%) despite the brief's stated blended range being much wider (60-85%) and explicitly noting Wilson CI could go as low as 51% — neither forecaster explains why they're both landing near the top of that range rather than hedging closer to the midpoint given n=4 sample uncertainty. 2. Neither forecaster meaningfully engages with the "unclear resolution under a hung parliament/coalition scenario" gap flagged in the brief; if the market rules don't cleanly define NDC "winning" outright, this ambiguity could mechanically depress or complicate a YES outcome independent of political reality, yet it's mentioned only in passing by Forecaster 1 and ignored by Forecaster 2. 3. Both anchor heavily on the Bawumia 22% cross-market signal as confirmatory, but neither questions whether that market itself is also illiquid or whether presidential and parliamentary coupling could break down given NDC's history of losing seats even while presidency is uncontested — the brief only asserts coupling has "historically" held, not that it's guaranteed for 2028 amid dumsor/corruption discontent. 4. Neither forecaster grapples with the divergent approval polls (IEA showing decline 68%→58.9% vs Global InfoAnalytics showing rise 67%→72%) as a meaningful uncertainty driver — both cite the range but don't discuss why one pollster shows a downward trend, which could be an early warning signal being averaged away. 5. The 2.5+ year horizon and Ghana's specific history of debt-crisis-driven electoral flips (2016 cited in the brief) is acknowledged by both as a reason to discount from the 100% base rate, but neither quantifies how much macro-shock risk over a multi-year window should weigh against a currently strong macro picture that could easily reverse (cedi "partially retraced," inflation "ticking back up to 3.7%"). 6. Both forecasts land almost identically despite using different confidence levels (0.50 vs 0.68) and different rationale emphases — this convergence without independent reasoning paths is itself a flag that both may be anchoring on the same "base rate minus discount" heuristic rather than independently stress-testing the tail-risk scenarios (military/constitutional shocks, referendum-linked timing changes mentioned in the gaps section).

71% (59% confidence)

Yes: 71% No: 29%

Ghana's Fourth Republic has a perfect 4/4 record of first-term incumbent parties winning re-election, and the NDC's 184/276 landslide, sharp disinflation (54%→~3.5%), ~6% growth, triple credit upgrades, absence of defections/by-election reversals, and a weak opposition (Bawumia at only 22% for the presidency) all argue above the thin 61% Kalshi anchor. However, the red team is right that both forecasters clustered near the top of the brief's own 60-85% band despite n=4 base-rate uncertainty (Wilson lower bound ~51%), a 2.5-year horizon in a country whose 2016 flip was macro-driven, divergent approval trends (IEA 68%→58.9% vs GIA 67%→72%), dumsor/corruption discontent, and ambiguity over how a hung-parliament outcome resolves. I therefore shade meaningfully below the two forecasts (0.74/0.76) but still above the illiquid market price, which appears to under-weight the incumbent-first-term base rate and cross-market opposition weakness. Final: Yes 0.71.

Total pipeline time: 180.0s