{
  "schema_version": "campaign-brain-public-coverage-v1",
  "generated_at": "2026-09-30T05:19:07.709Z",
  "snapshot_generated_at": "2026-09-29T23:44:47.054Z",
  "snapshot_sha256": "8f644e7a6db6851dbd7986d18a56ccc338bd2122e0b806b8c0ca9baea4473a2a",
  "snapshot_schema_version": "campaign-brain-research-snapshot-v1",
  "content_scope": "factual_metadata",
  "source_content_included": false,
  "quality_label": "beta-only",
  "verification_scope": "Local inspection of the saved factual projection and its source-card contract; no new independent primary-source fact or licensing verification.",
  "record_count": 103743,
  "count_unit": "Historical research records, not a verified count of distinct elections or unique sources.",
  "source_catalog_record_count": 116682,
  "omitted_record_count": 12939,
  "omitted_records_by_reason": {
    "clipped_historical_identity": 12878,
    "current_year_result_date_unverified": 61
  },
  "years": {
    "first": 1900,
    "last": 2025,
    "distinct_observed": 78,
    "observed": [
      1900,
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      1932,
      1934,
      1936,
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      1950,
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      1980,
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      1983,
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      1991,
      1992,
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      2011,
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      2014,
      2015,
      2016,
      2017,
      2018,
      2019,
      2020,
      2021,
      2022,
      2023,
      2024,
      2025
    ],
    "missing_within_range": [
      1902,
      1903,
      1904,
      1905,
      1906,
      1907,
      1908,
      1909,
      1910,
      1911,
      1912,
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      1961,
      1963,
      1965,
      1967,
      1969,
      1971,
      1972,
      1973,
      1975,
      1977
    ],
    "records_by_year": {
      "1900": 2,
      "1901": 4,
      "1920": 21,
      "1922": 21,
      "1924": 19,
      "1926": 15,
      "1928": 16,
      "1930": 22,
      "1932": 14,
      "1934": 19,
      "1936": 18,
      "1938": 19,
      "1940": 13,
      "1942": 14,
      "1944": 13,
      "1946": 12,
      "1948": 10,
      "1950": 12,
      "1952": 6,
      "1954": 17,
      "1956": 7,
      "1958": 15,
      "1960": 5,
      "1962": 4,
      "1964": 8,
      "1966": 14,
      "1968": 6,
      "1970": 29,
      "1974": 38,
      "1976": 475,
      "1978": 506,
      "1979": 52,
      "1980": 540,
      "1981": 22,
      "1982": 511,
      "1983": 60,
      "1984": 487,
      "1985": 29,
      "1986": 575,
      "1987": 69,
      "1988": 494,
      "1989": 527,
      "1990": 1584,
      "1991": 885,
      "1992": 1643,
      "1993": 650,
      "1994": 1547,
      "1995": 1029,
      "1996": 2196,
      "1997": 1025,
      "1998": 2512,
      "1999": 1328,
      "2000": 3078,
      "2001": 1461,
      "2002": 3745,
      "2003": 1816,
      "2004": 3415,
      "2005": 1569,
      "2006": 3707,
      "2007": 1983,
      "2008": 3858,
      "2009": 1711,
      "2010": 4933,
      "2011": 2273,
      "2012": 5017,
      "2013": 2078,
      "2014": 5070,
      "2015": 2862,
      "2016": 5720,
      "2017": 2359,
      "2018": 8189,
      "2019": 2922,
      "2020": 7793,
      "2021": 1572,
      "2022": 3121,
      "2023": 422,
      "2024": 3394,
      "2025": 516
    },
    "complete_year_coverage_claimed": false
  },
  "jurisdictions": {
    "coded_jurisdiction_count": 54,
    "known_state_or_territory_records": 64291,
    "unknown_state_records": 39452,
    "records_by_code": {
      "AK": 284,
      "AL": 859,
      "AR": 419,
      "AZ": 892,
      "CA": 7591,
      "CO": 1143,
      "CT": 832,
      "DC": 41,
      "DE": 414,
      "FL": 2441,
      "GA": 1851,
      "GU": 1,
      "HI": 453,
      "IA": 830,
      "ID": 301,
      "IL": 4219,
      "IN": 1222,
      "KS": 661,
      "KY": 1047,
      "LA": 914,
      "MA": 1449,
      "MD": 1043,
      "ME": 323,
      "MI": 3855,
      "MN": 1061,
      "MO": 1090,
      "MS": 348,
      "MT": 285,
      "NC": 2290,
      "ND": 172,
      "NE": 296,
      "NH": 524,
      "NJ": 1162,
      "NM": 738,
      "NV": 405,
      "NY": 5186,
      "OH": 1918,
      "OK": 505,
      "OR": 578,
      "PA": 1456,
      "PR": 5,
      "RI": 489,
      "SC": 1342,
      "SD": 190,
      "TN": 1394,
      "TX": 4143,
      "UT": 590,
      "VA": 1365,
      "VI": 2,
      "VT": 207,
      "WA": 1000,
      "WI": 2070,
      "WV": 194,
      "WY": 201
    },
    "names_by_code": {
      "AK": "Alaska",
      "AL": "Alabama",
      "AR": "Arkansas",
      "AZ": "Arizona",
      "CA": "California",
      "CO": "Colorado",
      "CT": "Connecticut",
      "DC": "District of Columbia",
      "DE": "Delaware",
      "FL": "Florida",
      "GA": "Georgia",
      "GU": "Guam",
      "HI": "Hawaii",
      "IA": "Iowa",
      "ID": "Idaho",
      "IL": "Illinois",
      "IN": "Indiana",
      "KS": "Kansas",
      "KY": "Kentucky",
      "LA": "Louisiana",
      "MA": "Massachusetts",
      "MD": "Maryland",
      "ME": "Maine",
      "MI": "Michigan",
      "MN": "Minnesota",
      "MO": "Missouri",
      "MS": "Mississippi",
      "MT": "Montana",
      "NC": "North Carolina",
      "ND": "North Dakota",
      "NE": "Nebraska",
      "NH": "New Hampshire",
      "NJ": "New Jersey",
      "NM": "New Mexico",
      "NV": "Nevada",
      "NY": "New York",
      "OH": "Ohio",
      "OK": "Oklahoma",
      "OR": "Oregon",
      "PA": "Pennsylvania",
      "PR": "Puerto Rico",
      "RI": "Rhode Island",
      "SC": "South Carolina",
      "SD": "South Dakota",
      "TN": "Tennessee",
      "TX": "Texas",
      "UT": "Utah",
      "VA": "Virginia",
      "VI": "Virgin Islands",
      "VT": "Vermont",
      "WA": "Washington",
      "WI": "Wisconsin",
      "WV": "West Virginia",
      "WY": "Wyoming"
    },
    "unknown_state_filter_behavior": "Records with an unknown state do not match a state filter."
  },
  "offices": {
    "category_count": 10,
    "records_by_category": {
      "congressional": 12691,
      "county": 44018,
      "judicial": 70,
      "municipal": 29556,
      "party/internal": 1,
      "referendum": 204,
      "school-board": 4074,
      "senate": 1910,
      "state-legislative": 9227,
      "statewide": 1992
    }
  },
  "missingness": {
    "state": {
      "present": 64291,
      "missing": 39452
    },
    "winner": {
      "present": 101954,
      "missing": 1789
    },
    "margin": {
      "present": 12324,
      "missing": 91419
    },
    "election_type": {
      "present": 103743,
      "missing": 0
    }
  },
  "original_labels": {
    "confidence_code_counts": {
      "aggregate-result-only": 8672,
      "basic-learnable": 26,
      "moderate": 3948,
      "moderate-high": 41072,
      "structured-directional": 14910,
      "structured-result-only-directional-office-lessons": 19703,
      "structured-result-with-directional-office-lessons": 15412
    },
    "evidence_tier_counts": {
      "directional_terrain_read": 57191,
      "documented_failure_signal": 1726,
      "result_derived_constraint": 43470,
      "source_indicated_warning": 1356
    }
  },
  "citations": {
    "cited_records": 103743,
    "occurrences": 106462,
    "distinct_url_title_cards": 55681,
    "distinct_urls": 10054,
    "occurrences_by_original_rights_status": {
      "citation-only": 370,
      "not_assessed": 91962,
      "open-access": 13907,
      "public-record": 223
    },
    "distinct_cards_by_original_rights_status": {
      "citation-only": 355,
      "not_assessed": 52218,
      "open-access": 2886,
      "public-record": 222
    },
    "original_labels_independently_reassessed": false,
    "source_republication_rights_granted": false
  },
  "limitations": [
    "Coverage is uneven across places, offices and years. The year range does not imply every year, jurisdiction or election is included.",
    "These are historical identity and recorded-result fields with original confidence and evidence labels. An evidence label is not proof of why a candidate won or lost.",
    "Missing fields remain missing. Unsafe or internally inconsistent margins are suppressed rather than corrected by guessing.",
    "Current-year records without verified completed-result dates are withheld. This snapshot contains no 2026 records or live results.",
    "Source cards contain URLs and titles, not publisher articles. Original rights labels remain disclosed; citations do not grant republication rights.",
    "No campaign strategy, voter targeting, persuasion, lobbying advice, forecasts or individual voter data are included."
  ],
  "page_copy": {
    "headline": "103,743 historical research records, with visible sources and limits.",
    "coverage": "The current factual projection contains records from 78 distinct years within 1900–2025, across 10 office categories and 54 coded US jurisdictions. Coverage is uneven, and 39,452 records have no coded state.",
    "results": "A recorded winner is present in 101,954 records. A retained margin is present in 12,324. Missing or inconsistent fields stay absent.",
    "sources": "Read the original source link and the stored confidence and evidence labels. The library does not reproduce publisher articles or claim that a citation proves causation or grants republication rights."
  }
}