Democrats taking back the House stays heavily favored

Name: Democrats taking back the House stays heavily favored
Creator: ClearMarket
Published: 2026-08-30T00:00:00.000Z
License: https://creativecommons.org/licenses/by/4.0/

Kalshi 84%

record: CMSIG2026083004 | category: momentum-repricing | target: CM-EVT-FV8MR86S63 | published: 2026-08-30

4-bullet brief | narrative

Kalshi puts 84% probability on Democrats winning the U.S. House in the next election, a strongly favored outcome.
The White House staff exodus, including Leavitt's departure, is consistent with the market's heavily Democratic lean but does not by itself move the needle on pricing.
A companion Kalshi contract (CM-EVT-T5VXKJT451) puts only 47% on Republicans holding at least one chamber, implying the Senate is the GOP's main remaining path to relevance.
Kalshi resolves via Library of Congress records; the contract settles on official chamber control, so partial gains without a majority flip would resolve NO.

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: Key White House advisers including Press Secretary Karoline Leavitt are departing ahead of the 2026 midterms, signaling internal strain as Republicans face electoral headwinds.exa_search → nationalpost.com · as_of 2026-08-31T15:47:21+00:00
publisher: nationalpost.com
published_at: 2026-08-30T00:00:00.000Z
source_url: https://nationalpost.com/news/trump-white-house-staff-resigning-midterms

[02] pm_response

interp: Kalshi Library of Congress resolution source provides a definitive settlement standard; the 84% print is one of the most decisive midterm reads across all tracked contracts.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/dems-win-house-2026-kalshi-84-2026-08-30/`
JSON	REST API for developers	`https://clearmarket.fyi/signals/dems-win-house-2026-kalshi-84-2026-08-30.json`
MCP	agentic AI tool call (Claude Desktop, Cursor, Continue)	`clearmarket.get_signal("dems-win-house-2026-kalshi-84-2026-08-30")`
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": "CMSIG2026083004",
  "published_at": "2026-08-30T00:00:00.000Z",
  "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": [
    "Kalshi puts 84% probability on Democrats winning the U.S. House in the next election, a strongly favored outcome.",
    "The White House staff exodus, including Leavitt's departure, is consistent with the market's heavily Democratic lean but does not by itself move the needle on pricing.",
    "A companion Kalshi contract (CM-EVT-T5VXKJT451) puts only 47% on Republicans holding at least one chamber, implying the Senate is the GOP's main remaining path to relevance.",
    "Kalshi resolves via Library of Congress records; the contract settles on official chamber control, so partial gains without a majority flip would resolve NO."
  ],
  "atomic_claims": [
    {
      "type": "news_event",
      "field_provenance": {
        "story": {
          "tier": "mediated",
          "method": "exa_search",
          "source": "nationalpost.com",
          "source_url": "https://nationalpost.com/news/trump-white-house-staff-resigning-midterms",
          "retrieved_at": "2026-08-31T15:47:21+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": "Key White House advisers including Press Secretary Karoline Leavitt are departing ahead of the 2026 midterms, signaling internal strain as Republicans face electoral headwinds.",
      "publisher": "nationalpost.com",
      "published_at": "2026-08-30T00:00:00.000Z",
      "source_url": "https://nationalpost.com/news/trump-white-house-staff-resigning-midterms"
    },
    {
      "type": "pm_response",
      "field_provenance": {
        "notes": {
          "tier": "editorial",
          "method": "llm_judge_cm_signal_v1"
        }
      },
      "notes": "Kalshi Library of Congress resolution source provides a definitive settlement standard; the 84% print is one of the most decisive midterm reads across all tracked contracts."
    }
  ],
  "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": "nationalpost.com: Some of Trump's top advisers leaving the White House ahead of midterms",
      "url": "https://nationalpost.com/news/trump-white-house-staff-resigning-midterms",
      "published_at": "2026-08-30T00:00:00.000Z",
      "retrieved_at": "2026-08-31T15:47:21+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 CMSIG2026083004 published 2026-08-30T00:00:00.000Z signature sha256-43582b0022f… ← underlying event all signals →