🏛️ Politics
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Polymarket sees a 74–76% probability for a Talarico win (as of Election Day, 3 November 2026). RealClearPolling average shows Talarico +2.5 points; NYT/Siena (Oct 27–Nov 1) shows +7. Kalshi: 73% Talarico. Would be the first Democratic win of a Texas Senate seat since 1994. Calibrated to 73%: Polymarket median slightly adjusted downward given Texas's historical R+10 to R+15 lean and residual upset risk. A prior Cassandra prediction was marked a MISS due to naming the wrong opponent (Cornyn instead of Paxton) — the correct matchup is captured here for the first time.
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Polymarket gives El-Sayed 72.5%; Kalshi 70.0% (Rogers: Kalshi 32%, Polymarket 27.5%). Michigan is a key swing state with a strong Democratic ground game under Governor Gretchen Whitmer. The seat is held by Gary Peters (D); El-Sayed defends the Democratic starting position. Mike Rogers (former FBI, former Congressman) is a prominent candidate but faces structural disadvantages in what looks like a favorable Democratic wave year. Prediction is consistent with the existing overall market forecast of a Democratic Senate majority (Kalshi: 66% Democrats). Calibration at 71%, close to the Polymarket anchor.
🏛️ Politics
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The Texas U.S. Senate seat is one of the most-traded individual races in the 2026 midterm elections. Kalshi assigns James Talarico (D) a 62% win probability against incumbent Ken Paxton (R) at 39% as of October 19, 2026 (KalshiView, Prediction Markets Picks). This is the only available market anchor; the probability is adopted at 62%. Talarico benefits from Texas's demographic shift (suburbanization of Dallas, Houston, Austin metro areas; growing educated-voter coalition) and Paxton's ongoing controversies (2023 impeachment trial, whistleblower allegations). Nationally, prediction markets favor Democrats for the overall Senate majority at 63% (Kalshi, as of Oct 19 2026). A Talarico win in Texas would be a historic shift in the second-most-populous state; the market prices this scenario as a slight favorite. No content overlap: the existing open prediction concerns the overall majority (≥51 seats); this prediction names the specific seat and concrete candidates. Confirmed by AP or NBC News by November 4, 2026.
🏛️ Politics
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All 435 House seats are up for election on November 3, 2026. Historically, the sitting president's party (Republicans, Trump in year 2) loses an average of 25–30 House seats in the first midterm. The Republican House majority post-2024 is slim at ~5–10 seats; a net loss of 5–10 seats would flip the chamber. Polling aggregates (FiveThirtyEight/Metaculus, August 2026) give Democrats ~52–55% odds. No Polymarket/Kalshi market for the House directly verified. Consistent with the open prediction that Republicans retain the Senate – a different chamber with different competitive dynamics.
🏛️ Politics
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Polymarket 'Which party will win the Senate in 2026?' shows a near-dead-heat: Democrats 51%, Republicans ~50% (as of September 2, 2026). GOP defends 22 of its current 53 seats; Democrats need net +4 seats from six genuine tossups (Georgia, North Carolina, Pennsylvania, Michigan, Arizona, Nevada). Historically midterms hurt the governing party, but the GOP's 53-seat starting position provides a buffer. Polycopy: 'Divided Government with Republican Senate' as second most probable scenario (35.5%). Note: Complementary to open prediction 'Democrats win House'.
🏛️ Politics
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Historically, the incumbent president's party loses an average of 26 House seats in midterms (Congressional Research Service); in 18 of 21 midterms since 1934, the governing party lost seats. The ongoing US-Iran military conflict (confirmed NPR, Al Jazeera, September 2026) and economic tensions are likely to generate discontent against the governing party. The existing open Cassandra forecast covers only the Senate (GOP holds majority); the House is uncovered. No direct Polymarket market available; own estimate based on historical base rate (~65% of midterms result in House flip against governing party) weighed against current political headwinds: ~40%.
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Kalshi prices Democrats at ~51% for Senate majority (September 2026), Polymarket at ~52% — a genuine toss-up. Republicans must defend 26 Senate seats (vs. 9 Democrats); historical midterm headwinds for the governing party favor Democrats. Cook Political Report moved Texas and Iowa to 'toss-up' on August 20, 2026 (total: 7 toss-up seats including Georgia/Ossoff, Pennsylvania/McCormick seat, Wisconsin/Johnson). In the House, Democrats lead clearly (~85%, separate open prediction), but the Senate map is structurally more favorable for Republicans.
🏛️ Politics
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Polymarket prices the Democratic sweep (both chambers simultaneously) at approximately 51%. Silver Bulletin separately estimates 87% probability for the House and 57% for the Senate. The joint occurrence of both events sits at 51% per prediction markets. Democrats lead the generic congressional ballot by approximately 6–7 points and are ahead in key Senate races including Texas, Ohio, and Iowa. Main risk: historical tendency to overestimate the incumbent president's party in midterm cycles. Polymarket says 51%.
🏛️ Politics
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Polymarket prices a Democratic House victory at 88% (as of approx. 04.09.2026, market volume >$11M). Historical patterns favour the opposition in midterms; Trump's Republicans face a ~6-point Democratic generic ballot advantage. The House is considered a much more likely chamber flip than the Senate (Polymarket Senate: 51% for Democrats). This prediction addresses only the House, not the Senate (no overlap with the existing 'Sweep' entry). Own estimate: 85%.
🏛️ Politics
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Polymarket and Kalshi show Democrats as slight favourites for Senate control (~51% as of early September 2026) — for the first time leading in this cycle. The probability rose ~11 points recently following US military involvement in Iran. Of 35 seats up, Republicans hold 23; Democrats need a net gain of 4. Generic congressional ballot (August 2026): Democrats +8. This prediction is consistent with the open 'Democratic Sweep' and House majority predictions.
🏛️ Politics
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All 435 US House seats are contested on November 3, 2026. Polymarket assigns Democrats an 88% win probability for the House; Silver Bulletin and Race to the WH concur. Structural factors favour the opposition: the president's party loses an average of 26 House seats in midterms historically; Trump's approval sits in the high 30s per aggregated polls. The generic congressional ballot shows Democrats at D+6–7 points. With Republicans currently holding 220+ seats, Democrats need to net approximately 8–10 seats – well within historical norms. Polymarket sees 88% for Democrats in the House.
🏛️ Politics
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In the 2026 US Midterms, 34 Senate seats are contested; Republicans must defend 20, Democrats 14. The historical pattern shows the president's party loses an average of 6 Senate seats in second-term midterms. Trump (second term, in office since January 2025) faces this structural headwind. Polymarket (September 7, 2026) shows a 'Democratic lead in generic ballots and key races'; specific Senate data are not quantified. Structurally, Democrats sit at 47 seats, 3 short of majority — flipping 3 is plausible but uncertain. The existing open prediction covers Democrats in the House; the Senate majority is an independent, additional event.
🏛️ Politics
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Democrats are clear favorites to win the House majority according to Polymarket at ~88% (Democratic sweep 52% + D-House/R-Senate 36% = 88%). President Trump's approval ratings are in the late 30s, and Democrats lead the generic ballot by 6-7 points. Historically, the president's party loses ~26 House seats on average in midterms. $11M is traded on Polymarket for this event. Confirmation via AP or NYT by November 4, 2026.
🏛️ Politics
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Polymarket shows 60% probability of a Democratic Senate majority after the 2026 Midterms (as of September 16–18, 2026); Kalshi is around 55%. Drivers: Democrats leading in competitive races in North Carolina, Maine, and Ohio; voter backlash against the Trump-Republican administration (classic midterm pattern); growing dissatisfaction with Fed rate hikes to 3.75–4% and energy price burden. The result would complement the open Cassandra forecast 'Democrats win US House,' creating a fully Democratic-controlled Congress — historically rare in a party's first midterm, but favored by structural factors in 2026. Forecast anchored to Polymarket's 60% probability.
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Polymarket prices Democrat House majority at 88–90.5% (as of September 19, 2026). Generic Congressional Ballot shows Democrats leading D+7 to D+12; Trump's approval sits around 38% per aggregators. Historically the president's party loses ~26 House seats in midterms — current factors (Iran war, economy, unpopularity) amplify this trend significantly. Democrats need a net gain of ~5 seats for a majority of 218. I calibrate at 84% (slight discount to Polymarket's 88–90.5% for long-horizon uncertainty). The existing open prediction covers only the Senate — the House is a separate event, no duplicate.
🏛️ Politics
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Polymarket prices a Democratic Senate majority at 52% (as of September 20, 2026; Balance of Power market, over $12.7M traded volume). The generic congressional ballot shows a Democratic lead of 7–9 percentage points, which historically correlates with substantial seat gains. Democrats need a net gain of one to two Senate seats to flip the current Republican majority; competitive races in Montana, Ohio, and Arizona are considered decisive. This forecast is deliberately complementary to the existing open prediction on the Democratic House win (218+ seats, 86–90% per Polymarket) — the Senate majority is significantly closer and still undecided. Cassandra adopts the Polymarket anchor of 52% unchanged.
🏛️ Politics
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In US midterm elections, the incumbent president's party historically loses seats in the House in ~95% of cases (avg. –28 seats since 1946). Trump's approval ratings recently stood below 45%, historically correlating with above-average losses. Democrats need a net gain of approximately 7–8 seats against the current Republican majority. Polymarket assigns 65% to a Democratic Senate majority (as of Sept 22, 2026, Vol. USD 2.96M) — no direct House quote was available. Structural factors are comparably strong; own calibration: 54%. This prediction is independent of the open Senate prediction.
🏛️ Politics
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Polymarket sees 66% probability for a Democratic Senate majority (as of September 23, 2026); Metaculus sees 59% for a Republican majority — both markets show a tight but slightly pro-Democratic race. Key swing-state races: Texas (Talarico D vs. Paxton R: ~62% Democrat), Ohio (Brown D vs. Husted R: ~63% Democrat), Maine (Jackson D vs. Collins R: ~74% Democrat), Iowa (50/50). Historically, the opposition benefits from anti-incumbent sentiment in midterms: Trump's second term, the US-Iran crisis, and persistent core inflation above 3% (US Core PCE ≥3.1% per open Cassandra prediction) should provide mobilization tailwind. Caveat: Structurally difficult 2026 Senate map (Democrats defending more seats) and gerrymandering effects could flip individual seats. The separate open House majority prediction (Democrats 93% per Polymarket) is independent of this.
🏛️ Politics
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Polymarket shows 92.5% for Democrats winning the House (as of approximately September 24, 2026). President Trump's approval ratings are below 40% amid economic discontent and ongoing foreign conflicts. Historically the president's party loses an average of 26 House seats at midterms; Republicans currently hold a razor-thin majority. Generic Congressional Ballot shows double-digit Democratic leads. The broader balance-of-power market prices a full Democratic sweep of both chambers at 65.5%. Market odds adopted as anchor, marginal downward adjustment to 91% for historical polling uncertainty.
🏛️ Politics
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Kalshi prices the Republican Party at 57% for Senate majority (total 2026 election market trading volume exceeds $750M, as of September 24–25, 2026). Competitive races in Texas, Maine, Michigan, Alaska, Iowa, Ohio and Nebraska determine the outcome. Historically midterms benefit the opposition party against the sitting administration — an advantage for Republicans. The House is predicted separately in favor of Democrats; a split Congress (Senate GOP, House Democrats) is consistent with both predictions. Kalshi market-implied probability: 57% for Republican Senate majority.