Democrats winning the US House stays heavily favored at 84 percent

Name: Democrats winning the US House stays heavily favored at 84 percent
Creator: ClearMarket
Published: 2026-07-26T00:00:00.000Z
License: https://creativecommons.org/licenses/by/4.0/

Kalshi 84%

record: CMSIG2026072607 | category: momentum-repricing | target: CM-EVT-FV8MR86S63 | published: 2026-07-26

4-bullet brief | narrative

The Kalshi contract prices an 84% chance Democrats win the US House in the next election, resolving via Library of Congress.
Democratic polling leads and a focused affordability message from Jeffries are consistent with the strong odds, but the market prices in that structural advantages matter.
Companion Kalshi event CM-EVT-T5VXKJT451 puts only 43% on Republicans controlling at least one chamber after midterms, showing Democrats are favored in the House but the Senate remains contested.
Redistricting gains for Republicans cited in news are already in the market; the 84% hold suggests traders view them as insufficient to overcome the Democratic polling advantage.

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: House Democratic leader Hakeem Jeffries launched a 100-day sprint to midterms with an affordability agenda from battleground Pennsylvania, as Democrats lead in polls but face redistricting headwinds.exa_search → apnews.com · as_of 2026-07-27T11:15:45+00:00
publisher: apnews.com
published_at: 2026-07-26T00:00:00.000Z
source_url: https://apnews.com/article/house-midterms-election-affordability-trump-d1d9d0cd0c3ed3b53a7f812a6bd2e7a6

[02] pm_response

interp: Kalshi at 84% resolves via Library of Congress and represents the composite House control question, distinct from individual district markets also in this story group.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/controlh-2026/

external

venue_a: https://kalshi.com/markets/CONTROLH-2026-D

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/democrats-win-us-house-next-election-kalshi-84-2026-07-26/`
JSON	REST API for developers	`https://clearmarket.fyi/signals/democrats-win-us-house-next-election-kalshi-84-2026-07-26.json`
MCP	agentic AI tool call (Claude Desktop, Cursor, Continue)	`clearmarket.get_signal("democrats-win-us-house-next-election-kalshi-84-2026-07-26")`
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": "CMSIG2026072607",
  "published_at": "2026-07-26T00:00:00.000Z",
  "detection": "news_cycle",
  "category_tag": "MOMENTUM_REPRICING",
  "secondary_tags": [],
  "pre_news_classification": "concurrent",
  "target_event_id": "CM-EVT-FV8MR86S63",
  "target_event_slug": "controlh-2026",
  "event_question": "Will the Democratic Party win the U.S. House in the next election?",
  "bullets": [
    "The Kalshi contract prices an 84% chance Democrats win the US House in the next election, resolving via Library of Congress.",
    "Democratic polling leads and a focused affordability message from Jeffries are consistent with the strong odds, but the market prices in that structural advantages matter.",
    "Companion Kalshi event CM-EVT-T5VXKJT451 puts only 43% on Republicans controlling at least one chamber after midterms, showing Democrats are favored in the House but the Senate remains contested.",
    "Redistricting gains for Republicans cited in news are already in the market; the 84% hold suggests traders view them as insufficient to overcome the Democratic polling advantage."
  ],
  "atomic_claims": [
    {
      "type": "news_event",
      "field_provenance": {
        "story": {
          "tier": "mediated",
          "method": "exa_search",
          "source": "apnews.com",
          "source_url": "https://apnews.com/article/house-midterms-election-affordability-trump-d1d9d0cd0c3ed3b53a7f812a6bd2e7a6",
          "retrieved_at": "2026-07-27T11:15:45+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": "House Democratic leader Hakeem Jeffries launched a 100-day sprint to midterms with an affordability agenda from battleground Pennsylvania, as Democrats lead in polls but face redistricting headwinds.",
      "publisher": "apnews.com",
      "published_at": "2026-07-26T00:00:00.000Z",
      "source_url": "https://apnews.com/article/house-midterms-election-affordability-trump-d1d9d0cd0c3ed3b53a7f812a6bd2e7a6"
    },
    {
      "type": "pm_response",
      "field_provenance": {
        "notes": {
          "tier": "editorial",
          "method": "llm_judge_cm_signal_v1"
        }
      },
      "notes": "Kalshi at 84% resolves via Library of Congress and represents the composite House control question, distinct from individual district markets also in this story group."
    }
  ],
  "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/controlh-2026/",
      "related": []
    },
    "external": {
      "venue_a": "https://kalshi.com/markets/CONTROLH-2026-D",
      "venue_b": null,
      "benchmark": null
    }
  },
  "sources": [
    {
      "label": "apnews.com: Jeffries kicks off sprint to midterms with Democrats' affordability ag",
      "url": "https://apnews.com/article/house-midterms-election-affordability-trump-d1d9d0cd0c3ed3b53a7f812a6bd2e7a6",
      "published_at": "2026-07-26T00:00:00.000Z",
      "retrieved_at": "2026-07-27T11:15:45+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 CMSIG2026072607 published 2026-07-26T00:00:00.000Z signature sha256-0024ee493af… ← underlying event all signals →