CM ClearMarket
SYSTEM: LIVE · PRICES: HOURLY REFRESH · COVERAGE: ~3,860 EVENTS / ~39,200 MARKETS · KALSHI + POLYMARKET

Democrats winning the House in 2026 stays heavily favored

Kalshi 90%
record: CMSIG2026101606 | category: momentum-repricing | target: CM-EVT-FV8MR86S63 | published: 2026-10-16
4-bullet brief | narrative
  • Kalshi prices 90% odds that Democrats win the US House in the next election, resolving via Library of Congress official records.
  • Debate clashes and Trump's record-low approval ratings are consistent with the market's strong tilt toward a Democratic House takeover.
  • The GOP retains-one-chamber contract (CM-EVT-T5VXKJT451) sits at 62%, implying the market prices a split Congress as the dominant scenario with the Senate remaining Republican.
  • Resolves via Library of Congress certification; contested or delayed results in close districts could push resolution past Election Night.
atomic briefs
[01] news_event
significance
surfaced in the daily Exa news-cycle scan; mechanically matched to an active kalshi market
story
With less than three weeks to Election Day, House and Senate candidates clashed in debates as both parties contest control of Congress in the 2026 midterms.exa_search → Alex Nitzberg, Paul Steinhauser, Charles Creitz, Robert Schmad, Ashley J. DiMella · as_of 2026-10-18T07:47:28+00:00
[mediated]
publisher
Alex Nitzberg, Paul Steinhauser, Charles Creitz, Robert Schmad, Ashley J. DiMella
published_at
2026-10-16T00:00:00.000Z
[02] pm_response
interp
Kalshi hosts both the House and the multi-chamber contracts; their joint pricing implies a high-confidence Democratic House flip paired with a Senate hold for Republicans.llm_judge_cm_signal_v1
[editorial]
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
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.

HTMLbrowsers, AI grounded search, crawlers (contains embedded JSON-LD @type: Dataset)https://clearmarket.fyi/signals/democrats-win-us-house-2026-kalshi-90-2026-10-16/
JSONREST API for developershttps://clearmarket.fyi/signals/democrats-win-us-house-2026-kalshi-90-2026-10-16.json
MCPagentic AI tool call (Claude Desktop, Cursor, Continue)clearmarket.get_signal("democrats-win-us-house-2026-kalshi-90-2026-10-16")
AGENTAI 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": "CMSIG2026101606",
  "published_at": "2026-10-16T00:00:00.000Z",
  "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 prices 90% odds that Democrats win the US House in the next election, resolving via Library of Congress official records.",
    "Debate clashes and Trump's record-low approval ratings are consistent with the market's strong tilt toward a Democratic House takeover.",
    "The GOP retains-one-chamber contract (CM-EVT-T5VXKJT451) sits at 62%, implying the market prices a split Congress as the dominant scenario with the Senate remaining Republican.",
    "Resolves via Library of Congress certification; contested or delayed results in close districts could push resolution past Election Night."
  ],
  "atomic_claims": [
    {
      "type": "news_event",
      "field_provenance": {
        "story": {
          "tier": "mediated",
          "method": "exa_search",
          "source": "Alex Nitzberg, Paul Steinhauser, Charles Creitz, Robert Schmad, Ashley J. DiMella",
          "source_url": "https://www.foxnews.com/live-news/midterm-elections-2026-less-than-three-weeks-away-october-16",
          "retrieved_at": "2026-10-18T07:47:28+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": "With less than three weeks to Election Day, House and Senate candidates clashed in debates as both parties contest control of Congress in the 2026 midterms.",
      "publisher": "Alex Nitzberg, Paul Steinhauser, Charles Creitz, Robert Schmad, Ashley J. DiMella",
      "published_at": "2026-10-16T00:00:00.000Z",
      "source_url": "https://www.foxnews.com/live-news/midterm-elections-2026-less-than-three-weeks-away-october-16"
    },
    {
      "type": "pm_response",
      "field_provenance": {
        "notes": {
          "tier": "editorial",
          "method": "llm_judge_cm_signal_v1"
        }
      },
      "notes": "Kalshi hosts both the House and the multi-chamber contracts; their joint pricing implies a high-confidence Democratic House flip paired with a Senate hold for Republicans."
    }
  ],
  "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": "Alex Nitzberg, Paul Steinhauser, Charles Creitz, Robert Schmad, Ashley J. DiMella: As midterm Election Day approaches, candidates clash in debates  | Liv",
      "url": "https://www.foxnews.com/live-news/midterm-elections-2026-less-than-three-weeks-away-october-16",
      "published_at": "2026-10-16T00:00:00.000Z",
      "retrieved_at": "2026-10-18T07:47:28+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 CMSIG2026101606 published 2026-10-16T00:00:00.000Z signature sha256-482c137b464… ← underlying event all signals →