Republican midterm losses odds stay near 86 percent

Name: Republican midterm losses odds stay near 86 percent
Creator: ClearMarket
Published: 2026-10-11T00:00:00.000Z
License: https://creativecommons.org/licenses/by/4.0/

Polymarket 86%

record: CMSIG2026101105 | category: momentum-repricing | target: CM-EVT-4N4F192YB2 | published: 2026-10-11

4-bullet brief | narrative

Polymarket prices an 86% probability of a 2026 blue wave, consistent with Trump's own admission of electoral vulnerability.
Trump's public warning mirrors the market read: the contract is not pricing a Republican hold, it is pricing a Democratic wave as the base case.
Kalshi's companion contract on Republicans holding governorships (CM-EVT-4DFCBXLZN6) sits at 70%, suggesting the market sees GOP state-level resilience even as Congress flips.
Kalshi resolves Republican chamber control (CM-EVT-T5VXKJT451) at 59%, well below the blue-wave contract's 86%, indicating the market separates chamber control from a broader wave definition.

atomic briefs | structured for retrieval

[01] news_event

significance

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

story: Trump publicly acknowledged he will be blamed if Republicans lose the midterms, reflecting concern about historical trends punishing the president's party.exa_search → Peter Nicholas · as_of 2026-10-11T07:48:02+00:00
publisher: Peter Nicholas
published_at: 2026-10-11T00:00:00.000Z
source_url: https://www.nbcnews.com/politics/donald-trump/bracing-midterms-trump-says-will-blamed-republicans-lose-rcna602512

[02] pm_response

interp: Polymarket contract resolves via UMA oracle; the 27-percentage-point spread between chamber control odds and the blue-wave contract reflects definitional ambiguity in what constitutes a 'wave.'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/blue-wave-in-2026/

external

venue_a: polymarket · 0xed4fd09a24f20a3afc1d722ace811fffff3cffd9a56a3fbffc47f4d3d47a88ed

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-2026-polymarket-86-as-trump-self-warns-2026-10-11/`
JSON	REST API for developers	`https://clearmarket.fyi/signals/blue-wave-2026-polymarket-86-as-trump-self-warns-2026-10-11.json`
MCP	agentic AI tool call (Claude Desktop, Cursor, Continue)	`clearmarket.get_signal("blue-wave-2026-polymarket-86-as-trump-self-warns-2026-10-11")`
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": "CMSIG2026101105",
  "published_at": "2026-10-11T00:00:00.000Z",
  "detection": "news_cycle",
  "category_tag": "MOMENTUM_REPRICING",
  "secondary_tags": [],
  "pre_news_classification": "concurrent",
  "target_event_id": "CM-EVT-4N4F192YB2",
  "target_event_slug": "blue-wave-in-2026",
  "event_question": "Will there be a blue wave in 2026?",
  "bullets": [
    "Polymarket prices an 86% probability of a 2026 blue wave, consistent with Trump's own admission of electoral vulnerability.",
    "Trump's public warning mirrors the market read: the contract is not pricing a Republican hold, it is pricing a Democratic wave as the base case.",
    "Kalshi's companion contract on Republicans holding governorships (CM-EVT-4DFCBXLZN6) sits at 70%, suggesting the market sees GOP state-level resilience even as Congress flips.",
    "Kalshi resolves Republican chamber control (CM-EVT-T5VXKJT451) at 59%, well below the blue-wave contract's 86%, indicating the market separates chamber control from a broader wave definition."
  ],
  "atomic_claims": [
    {
      "type": "news_event",
      "field_provenance": {
        "story": {
          "tier": "mediated",
          "method": "exa_search",
          "source": "Peter Nicholas",
          "source_url": "https://www.nbcnews.com/politics/donald-trump/bracing-midterms-trump-says-will-blamed-republicans-lose-rcna602512",
          "retrieved_at": "2026-10-11T07:48:02+00:00"
        }
      },
      "significance": {
        "threshold": 5,
        "threshold_unit": "rank",
        "passed": true,
        "reason": "surfaced in the daily Exa news-cycle scan; mechanically matched to an active polymarket market"
      },
      "story": "Trump publicly acknowledged he will be blamed if Republicans lose the midterms, reflecting concern about historical trends punishing the president's party.",
      "publisher": "Peter Nicholas",
      "published_at": "2026-10-11T00:00:00.000Z",
      "source_url": "https://www.nbcnews.com/politics/donald-trump/bracing-midterms-trump-says-will-blamed-republicans-lose-rcna602512"
    },
    {
      "type": "pm_response",
      "field_provenance": {
        "notes": {
          "tier": "editorial",
          "method": "llm_judge_cm_signal_v1"
        }
      },
      "notes": "Polymarket contract resolves via UMA oracle; the 27-percentage-point spread between chamber control odds and the blue-wave contract reflects definitional ambiguity in what constitutes a 'wave.'"
    }
  ],
  "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/blue-wave-in-2026/",
      "related": []
    },
    "external": {
      "venue_a": null,
      "venue_b": null,
      "benchmark": null
    }
  },
  "sources": [
    {
      "label": "Peter Nicholas: Bracing for the midterms, Trump says he will be blamed if Republicans",
      "url": "https://www.nbcnews.com/politics/donald-trump/bracing-midterms-trump-says-will-blamed-republicans-lose-rcna602512",
      "published_at": "2026-10-11T00:00:00.000Z",
      "retrieved_at": "2026-10-11T07:48:02+00:00"
    }
  ],
  "field_provenance": {
    "pm_data": "polymarket_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 CMSIG2026101105 published 2026-10-11T00:00:00.000Z signature sha256-76caaefecc4… ← underlying event all signals →