{
  "coverage": {
    "final": {
      "2006": {
        "cook": 8,
        "sabato": 8,
        "inside_elections": 8,
        "consensus": 8
      },
      "2008": {
        "cook": 20,
        "sabato": 0,
        "inside_elections": 20,
        "consensus": 20
      },
      "2010": {
        "cook": 17,
        "sabato": 17,
        "inside_elections": 17,
        "consensus": 17
      },
      "2012": {
        "cook": 23,
        "sabato": 23,
        "inside_elections": 23,
        "consensus": 23
      },
      "2014": {
        "cook": 20,
        "sabato": 20,
        "inside_elections": 20,
        "consensus": 20
      },
      "2016": {
        "cook": 25,
        "sabato": 25,
        "inside_elections": 25,
        "consensus": 25
      },
      "2018": {
        "cook": 26,
        "sabato": 26,
        "inside_elections": 26,
        "consensus": 26
      },
      "2020": {
        "cook": 26,
        "sabato": 26,
        "inside_elections": 26,
        "consensus": 26
      },
      "2022": {
        "cook": 26,
        "sabato": 26,
        "inside_elections": 26,
        "consensus": 26
      },
      "2024": {
        "cook": 27,
        "sabato": 27,
        "inside_elections": 27,
        "consensus": 27
      },
      "2026": {
        "cook": 35,
        "sabato": 35,
        "inside_elections": 35,
        "consensus": 35
      }
    },
    "cutoff": {
      "2006": {
        "cook": 0,
        "sabato": 0,
        "inside_elections": 0,
        "consensus": 0
      },
      "2008": {
        "cook": 14,
        "sabato": 14,
        "inside_elections": 14,
        "consensus": 14
      },
      "2010": {
        "cook": 12,
        "sabato": 12,
        "inside_elections": 12,
        "consensus": 12
      },
      "2012": {
        "cook": 23,
        "sabato": 23,
        "inside_elections": 23,
        "consensus": 23
      },
      "2014": {
        "cook": 20,
        "sabato": 20,
        "inside_elections": 20,
        "consensus": 20
      },
      "2016": {
        "cook": 15,
        "sabato": 15,
        "inside_elections": 15,
        "consensus": 15
      },
      "2018": {
        "cook": 26,
        "sabato": 26,
        "inside_elections": 26,
        "consensus": 26
      },
      "2020": {
        "cook": 26,
        "sabato": 26,
        "inside_elections": 26,
        "consensus": 26
      },
      "2022": {
        "cook": 26,
        "sabato": 26,
        "inside_elections": 26,
        "consensus": 26
      },
      "2024": {
        "cook": 27,
        "sabato": 27,
        "inside_elections": 27,
        "consensus": 27
      },
      "2026": {
        "cook": 0,
        "sabato": 0,
        "inside_elections": 0,
        "consensus": 0
      }
    }
  },
  "source_rows": 1306,
  "feature_rows": 442,
  "review_issues": [],
  "coding": "D/opposition positive; Republican negative. Toss-up 0, tilt +/-1, lean +/-2, likely +/-3, safe/solid +/-4. Ordinal scale, not assigned vote shares or probabilities. Independent advantages follow the modeled main opposition; seat control arrangements stay separate.",
  "current_primary_source_status": "Inside Elections public API available; Cook and Sabato direct pages returned 403 in browser lookup. Wikipedia remains the explicitly authorized common table source.",
  "join_notes": [
    "Arizona 2020 normalized as a special election in the research join; upstream model flag preserved.",
    "California 2022 shared ratings only because the source footnote explicitly covers both simultaneous elections.",
    "Louisiania in the 2010 archived table normalized to Louisiana; Virginia is matched without overlapping West Virginia."
  ],
  "chronology": "Final tables are user-authorized benchmarks. Historical cutoff versions are optional sensitivity evidence and never filled with later final ratings."
}