Blue wave in 2026 holds near 75% as Democrats gain edge

Name: Blue wave in 2026 holds near 75% as Democrats gain edge
Creator: ClearMarket
Published: 2026-09-04T11:53:10.540Z
License: https://creativecommons.org/licenses/by/4.0/

Kalshi 75%

record: CMSIG2026090405 | category: momentum-repricing | target: CM-EVT-QK0HJYVMX2 | published: 2026-09-04

4-bullet brief | narrative

Kalshi prices 75% on a blue wave materializing in the 2026 midterms, resolving via Bureau of Labor Statistics.
The Cornell academic forecast aligns with the market's strong Democratic lean, not at odds with it.
Companion Kalshi contract (CM-EVT-6CY3Y4C610) puts only 41% on a blue tsunami, a meaningful gap suggesting markets see a substantial but not dominant Democratic sweep.
Republican control of at least one chamber (CM-EVT-T5VXKJT451) sits at 48%, broadly consistent with 75% blue wave odds if the Senate outcome remains contested.

atomic briefs | structured for retrieval

[01] news_event

significance

surfaced in the daily Exa news-cycle scan; mechanically matched to an active kalshi market

story: A Cornell University midterm forecast strongly favors Democrats to win the House majority in 2026, consistent with Gallup data showing Democrats holding a party identification advantage.exa_search → Credit: Ryan Young/Cornell University · as_of 2026-09-06T11:54:11+00:00
publisher: Credit: Ryan Young/Cornell University
published_at: 2026-09-04T11:53:10.540Z
source_url: https://news.cornell.edu/stories/2026/09/midterm-forecast-strongly-favors-democrats-win-house-majority

[02] pm_response

interp: Kalshi contract resolves via Bureau of Labor Statistics; resolution source appears anomalous for an electoral question and may introduce settlement uncertainty.llm_judge_cm_signal_v1

evaluation

News-cycle wires publish on coverage, not editorial selection — the day’s top stories matched to the prediction markets pricing them, so nothing is cherry-picked.

judge_engine: none — deterministic news-cycle scan
judge_verdict: auto_published
judge_confidence: n/a — no judge gate (deterministic publishing)
prompt_template: news_cycle_v1 github · auditable
match_method: entity_slug_match (mechanical)

citation graph

Every wire traces back to the ClearMarket event it is built on, and out to each venue’s own market page — so any figure here can be verified at its source.

internal

cm_event: /events/kxbluewavecombo-27feb/

external

venue_a: https://kalshi.com/markets/KXBLUEWAVECOMBO-27FEB

programmatic access · four surfaces, same payload

AI grounded search reads embedded JSON-LD in HTML. Developers query REST. Agentic AI clients (Claude Desktop, Cursor) call MCP tools. AI crawlers index via /llms.txt. Same canonical record at every surface.

HTML	browsers, AI grounded search, crawlers (contains embedded JSON-LD `@type: Dataset`)	`https://clearmarket.fyi/signals/blue-wave-in-2026-midterms-kalshi-75-2026-09-04/`
JSON	REST API for developers	`https://clearmarket.fyi/signals/blue-wave-in-2026-midterms-kalshi-75-2026-09-04.json`
MCP	agentic AI tool call (Claude Desktop, Cursor, Continue)	`clearmarket.get_signal("blue-wave-in-2026-midterms-kalshi-75-2026-09-04")`
AGENT	AI crawler discovery index	`/llms.txt`

 PM data: platform APIs (hourly refresh). News context: retrieved with source citations. Editorial judgment: LLM judge with prompt template versioned per wire type. Per-claim provenance inline above; full per-field provenance map at the JSON endpoint under field_provenance.
  raw JSON record · same payload returned by REST endpoint
 {
  "$schema": "https://clearmarket.fyi/schema/signal/v1.json",
  "provenance_version": "0.2.0",
  "record_id": "CMSIG2026090405",
  "published_at": "2026-09-04T11:53:10.540Z",
  "detection": "news_cycle",
  "category_tag": "MOMENTUM_REPRICING",
  "secondary_tags": [],
  "pre_news_classification": "concurrent",
  "target_event_id": "CM-EVT-QK0HJYVMX2",
  "target_event_slug": "kxbluewavecombo-27feb",
  "event_question": "Will there be a blue wave in 2026?",
  "bullets": [
    "Kalshi prices 75% on a blue wave materializing in the 2026 midterms, resolving via Bureau of Labor Statistics.",
    "The Cornell academic forecast aligns with the market's strong Democratic lean, not at odds with it.",
    "Companion Kalshi contract (CM-EVT-6CY3Y4C610) puts only 41% on a blue tsunami, a meaningful gap suggesting markets see a substantial but not dominant Democratic sweep.",
    "Republican control of at least one chamber (CM-EVT-T5VXKJT451) sits at 48%, broadly consistent with 75% blue wave odds if the Senate outcome remains contested."
  ],
  "atomic_claims": [
    {
      "type": "news_event",
      "field_provenance": {
        "story": {
          "tier": "mediated",
          "method": "exa_search",
          "source": "Credit:  Ryan Young/Cornell University",
          "source_url": "https://news.cornell.edu/stories/2026/09/midterm-forecast-strongly-favors-democrats-win-house-majority",
          "retrieved_at": "2026-09-06T11:54:11+00:00"
        }
      },
      "significance": {
        "threshold": 5,
        "threshold_unit": "rank",
        "passed": true,
        "reason": "surfaced in the daily Exa news-cycle scan; mechanically matched to an active kalshi market"
      },
      "story": "A Cornell University midterm forecast strongly favors Democrats to win the House majority in 2026, consistent with Gallup data showing Democrats holding a party identification advantage.",
      "publisher": "Credit:  Ryan Young/Cornell University",
      "published_at": "2026-09-04T11:53:10.540Z",
      "source_url": "https://news.cornell.edu/stories/2026/09/midterm-forecast-strongly-favors-democrats-win-house-majority"
    },
    {
      "type": "pm_response",
      "field_provenance": {
        "notes": {
          "tier": "editorial",
          "method": "llm_judge_cm_signal_v1"
        }
      },
      "notes": "Kalshi contract resolves via Bureau of Labor Statistics; resolution source appears anomalous for an electoral question and may introduce settlement uncertainty."
    }
  ],
  "evaluation": {
    "judge_engine": "none — deterministic news-cycle scan",
    "judge_verdict": "auto_published",
    "judge_confidence": null,
    "prompt_template": "news_cycle_v1"
  },
  "citations": {
    "internal": {
      "cm_event": "/events/kxbluewavecombo-27feb/",
      "related": []
    },
    "external": {
      "venue_a": "https://kalshi.com/markets/KXBLUEWAVECOMBO-27FEB",
      "venue_b": null,
      "benchmark": null
    }
  },
  "sources": [
    {
      "label": "Credit:  Ryan Young/Cornell University: Midterm forecast strongly favors Democrats to win House majority",
      "url": "https://news.cornell.edu/stories/2026/09/midterm-forecast-strongly-favors-democrats-win-house-majority",
      "published_at": "2026-09-04T11:53:10.540Z",
      "retrieved_at": "2026-09-06T11:54:11+00:00"
    }
  ],
  "field_provenance": {
    "pm_data": "kalshi_api",
    "news_context": "exa_search",
    "editorial_judgment": "cm_signal_llm_judge"
  }
}
 
   PROVENANCE PROTOCOL v0.2 · [direct] venue api · [mediated] grounded web fetch + source url · [derived] computed from listed inputs · [editorial] versioned llm judgment · full spec /schema/provenance/v1

record CMSIG2026090405 published 2026-09-04T11:53:10.540Z signature sha256-582d60d4f29… ← underlying event all signals →