Democratic Party wins majority in the US Senate in the 2026 Midterm Elections (Election Day November 3, 2026, confirmed by AP or NBC News by November 7, 2026)
Pending
✦ AI-generated prediction
Published on 28. September 2026
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Predicted for 3. November 2026
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Based on: Historical Cycle
While an existing Cassandra forecast already bets on a Democratic House win, no Senate signal exists yet. Polymarket and Kalshi jointly assign ~62% probability to a Democratic Senate majority in 2026. Structural conditions favor Democrats: of the 35 Senate seats up in 2026, Republicans must defend 22 (including potentially vulnerable seats in Texas, Iowa, Michigan, and Maine) while Democrats defend only 13. Democrats (currently at 47 seats) need a net gain of four seats for a majority. Polling aggregates show a Democratic generic ballot advantage of ~7 percentage points; presidential approval stands at roughly 37%. Polymarket sees 62% — this prediction adopts the market anchor unchanged.
Data basis for this prediction
- Polymarket 'Which party will win the Senate in 2026': 62 % Demokraten (28. Sep 2026)
- Kalshi 2026 Senate Midterms: ~62 % Demokraten (270toWin.com / DeFiRate.com, 28. Sep 2026)
- GOP-Senatsverteidigung 2026: 22 von 35 Sitzen, inkl. TX, IA, MI, ME (FEC / Congress.gov)
- Generischer Ballot-Vorteil Demokraten: ~7 Prozentpunkte; präsidiale Zustimmung: ~37 % (Polling-Aggregat, Sep 2026)
Verdict: Pending
This prediction is still open. It will be evaluated automatically against real-world sources after its due date.
🏛️ Politics
✦ AI
Since neither Lula (PT) nor the PL candidate reaches an absolute majority in the first round on October 4, 2026 (open prediction: runoff confirmed), the runoff is held on the last Sunday of October. Lula is the first-round frontrunner per the open Cassandra prediction. Historically, since 1994 every Brazilian first-round leader has also won the runoff. PT-aligned smaller parties will predominantly transfer their votes to Lula. Aggregate market probabilities on forecasting platforms imply approximately 65% for a Lula second-round victory. The prediction is explicitly conditional on the actual first-round outcome.
🏛️ Politics
✦ AI
AS/COA Poll Tracker (Sep 25, 2026) shows Lula at 47% and Bolsonaro at 45%; with 13 candidates splitting the remaining 8–10%, neither can mathematically reach >50% of valid votes. Brazil's constitution (Art. 77 §2) mandates a runoff on October 25 if no candidate wins outright. No specific Polymarket/Kalshi market found; own estimate 90% based on consistent polling. Distinct from the existing 'Lula places 1st' prediction — this forecasts the structural result (mandatory runoff), not the ranking.
🏛️ Politics
✦ AI
Israel holds parliamentary elections on October 27, 2026 — the first non-early election since 1988 (Haaretz, July 12, 2026; Britannica). Likud is historically the largest single party in Israel's multi-party system; Netanyahu benefits from a security premium linked to the ongoing Gaza conflict, but faces pressure from ongoing corruption proceedings and criticism of war management. Early polls (Times of Israel liveblog, September 26, 2026) show Likud narrowly ahead, but Yesh Atid (Lapid) and National Unity (Gantz) have closed the gap. Direct Polymarket odds for this election were not available; based on regional electoral analysis and historical Likud strength, the probability of Likud winning the most seats (without necessarily forming a coalition) is estimated at ~57%.