Republican Senate hold in Iowa draws firm institutional defense

Name: Republican Senate hold in Iowa draws firm institutional defense
Creator: ClearMarket
Published: 2026-07-19T09:49:33+00:00
License: https://creativecommons.org/licenses/by/4.0/

63% · $64K 24h

record: CMSIG20260719VS02 | category: volume-spike | target: CM-EVT-R8V0583H75 | published: 2026-07-19

4-bullet brief | narrative

63% pricing reflects solid but not assured Republican advantage in what markets treat as a lean-red seat.
$63.7K in 24h equals 37% of all-time volume, a substantial single-session re-engagement.
Renewed activity may track candidate developments, polling releases, or national environment reassessment.
Resolution tied to November 2026 midterms; current price leaves meaningful room for Democratic upset.

atomic briefs | structured for retrieval

[01] volume_anomaly

liquidity kalshi_vol_24h: $63.7K

evaluation

The model, prompt version, and confidence behind this wire are published below — so you can see how it was judged, and re-check it yourself.

judge_engine: llm_judge_cm_signal_v1
judge_verdict: wire_eligible
judge_confidence: 0.81 / 1.00
prompt_template: volume_spike_v1 github · auditable

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/senateia-26/

external

venue_a: https://kalshi.com/markets/SENATEIA-26-R

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/will-republicans-win-the-senate-race-in-vol-63718/`
JSON	REST API for developers	`https://clearmarket.fyi/signals/will-republicans-win-the-senate-race-in-vol-63718.json`
MCP	agentic AI tool call (Claude Desktop, Cursor, Continue)	`clearmarket.get_signal("will-republicans-win-the-senate-race-in-vol-63718")`
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": "CMSIG20260719VS02",
  "published_at": "2026-07-19T09:49:33+00:00",
  "detection": "volume_spike",
  "category_tag": "VOLUME_SPIKE",
  "secondary_tags": [],
  "pre_news_classification": "pre_news",
  "target_event_id": "CM-EVT-R8V0583H75",
  "target_event_slug": "senateia-26",
  "event_question": "Iowa Senate winner?",
  "bullets": [
    "63% pricing reflects solid but not assured Republican advantage in what markets treat as a lean-red seat.",
    "$63.7K in 24h equals 37% of all-time volume, a substantial single-session re-engagement.",
    "Renewed activity may track candidate developments, polling releases, or national environment reassessment.",
    "Resolution tied to November 2026 midterms; current price leaves meaningful room for Democratic upset."
  ],
  "atomic_claims": [
    {
      "type": "volume_anomaly",
      "provenance": "24h + cumulative volume direct from kalshi API; intensity = 24h/cumulative (derived)",
      "field_provenance": {
        "volume_24h_usd": {
          "tier": "direct",
          "method": "kalshi_api"
        },
        "intensity": {
          "tier": "derived",
          "method": "arithmetic",
          "inputs": [
            "volume_24h_usd",
            "volume_cumulative_usd"
          ]
        }
      },
      "liquidity_context": {
        "kalshi_vol_24h_usd": 63718.86
      }
    }
  ],
  "evaluation": {
    "judge_engine": "llm_judge_cm_signal_v1",
    "judge_verdict": "wire_eligible",
    "judge_confidence": 0.81,
    "prompt_template": "volume_spike_v1"
  },
  "citations": {
    "internal": {
      "cm_event": "/events/senateia-26/",
      "related": []
    },
    "external": {
      "venue_a": "https://kalshi.com/markets/SENATEIA-26-R",
      "venue_b": null,
      "benchmark": null
    }
  },
  "sources": [
    {
      "label": "ClearMarket market record: Iowa Senate winner?",
      "url": "https://clearmarket.fyi/events/senateia-26",
      "retrieved_at": "2026-07-19T09:49:33+00:00"
    }
  ],
  "field_provenance": {
    "pm_data": "kalshi_api",
    "news_context": "retrieval_grounded",
    "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 CMSIG20260719VS02 published 2026-07-19T09:49:33+00:00 signature sha256-465e1cf0862… ← underlying event all signals →