{
  "schema_version": "jp-election-municipality-proportional-swing-graph.v1",
  "dataset_id": "jp-election-db.derived-shape.graph",
  "family": "graph",
  "dataset": "municipality-proportional-swing-2025-2026",
  "source_release_version": "2026-05-03-v050",
  "selector": {
    "prefecture_code": "09",
    "prefecture_name": "栃木県",
    "prefecture_name_en": "Tochigi",
    "party_id": "LDP",
    "party_label": "自民",
    "party_label_en": "Liberal Democratic Party",
    "scope": "prefecture",
    "ranking_id": "",
    "ranking_label": "",
    "ranking_label_en": ""
  },
  "comparison": {
    "comparison_key": "20250720_hc_pr__20260208_hr_block",
    "baseline_election_set_key": "20250720_hc",
    "baseline_election_date": "2025-07-20",
    "baseline_vote_system": "pr",
    "target_election_set_key": "20260208_hr",
    "target_election_date": "2026-02-08",
    "target_vote_system": "block"
  },
  "metric": {
    "primary_metric_id": "votes_change_rate_pct",
    "primary_metric_label": "票数増減率",
    "secondary_metric_id": "votes_delta",
    "secondary_metric_label": "票数差"
  },
  "summary": {
    "point_grain": "municipality",
    "point_count": 25,
    "municipality_count": 25,
    "min_votes_change_rate_pct": 29.240781,
    "max_votes_change_rate_pct": 86.792582
  },
  "municipalities": [
    {
      "prefecture_code": "09",
      "prefecture_name": "栃木県",
      "prefecture_name_en": "Tochigi",
      "jis_code": "092134",
      "municipality_name": "那須塩原市",
      "municipality_name_en": "Nasushiobara-shi",
      "baseline_votes": 11725.305,
      "target_votes": 21902.0,
      "votes_delta": 10176.695,
      "votes_change_rate_pct": 86.792582,
      "baseline_vote_share_pct_muni": 24.415511,
      "target_vote_share_pct_muni": 41.972328,
      "vote_share_delta_pct_pt": 17.556817
    },
    {
      "prefecture_code": "09",
      "prefecture_name": "栃木県",
      "prefecture_name_en": "Tochigi",
      "jis_code": "092096",
      "municipality_name": "真岡市",
      "municipality_name_en": "Moka-shi",
      "baseline_votes": 8673.999,
      "target_votes": 15385.0,
      "votes_delta": 6711.001,
      "votes_change_rate_pct": 77.36917,
      "baseline_vote_share_pct_muni": 27.276726,
      "target_vote_share_pct_muni": 46.064253,
      "vote_share_delta_pct_pt": 18.787527
    },
    {
      "prefecture_code": "09",
      "prefecture_name": "栃木県",
      "prefecture_name_en": "Tochigi",
      "jis_code": "092100",
      "municipality_name": "大田原市",
      "municipality_name_en": "Ohtawara-shi",
      "baseline_votes": 8469.788,
      "target_votes": 14486.0,
      "votes_delta": 6016.212,
      "votes_change_rate_pct": 71.031435,
      "baseline_vote_share_pct_muni": 29.318384,
      "target_vote_share_pct_muni": 45.530551,
      "vote_share_delta_pct_pt": 16.212167
    },
    {
      "prefecture_code": "09",
      "prefecture_name": "栃木県",
      "prefecture_name_en": "Tochigi",
      "jis_code": "092088",
      "municipality_name": "小山市",
      "municipality_name_en": "Oyama-shi",
      "baseline_votes": 16111.119,
      "target_votes": 27277.0,
      "votes_delta": 11165.881,
      "votes_change_rate_pct": 69.305434,
      "baseline_vote_share_pct_muni": 22.628294,
      "target_vote_share_pct_muni": 38.882712,
      "vote_share_delta_pct_pt": 16.254418
    },
    {
      "prefecture_code": "09",
      "prefecture_name": "栃木県",
      "prefecture_name_en": "Tochigi",
      "jis_code": "094072",
      "municipality_name": "那須町",
      "municipality_name_en": "Nasu-machi",
      "baseline_votes": 3191.94,
      "target_votes": 5287.0,
      "votes_delta": 2095.06,
      "votes_change_rate_pct": 65.635946,
      "baseline_vote_share_pct_muni": 28.229769,
      "target_vote_share_pct_muni": 42.778542,
      "vote_share_delta_pct_pt": 14.548773
    },
    {
      "prefecture_code": "09",
      "prefecture_name": "栃木県",
      "prefecture_name_en": "Tochigi",
      "jis_code": "093440",
      "municipality_name": "市貝町",
      "municipality_name_en": "Ichikai-machi",
      "baseline_votes": 1422.332,
      "target_votes": 2307.0,
      "votes_delta": 884.668,
      "votes_change_rate_pct": 62.198418,
      "baseline_vote_share_pct_muni": 26.90244,
      "target_vote_share_pct_muni": 43.073189,
      "vote_share_delta_pct_pt": 16.170749
    },
    {
      "prefecture_code": "09",
      "prefecture_name": "栃木県",
      "prefecture_name_en": "Tochigi",
      "jis_code": "092118",
      "municipality_name": "矢板市",
      "municipality_name_en": "Yaita-shi",
      "baseline_votes": 3937.937,
      "target_votes": 6370.0,
      "votes_delta": 2432.063,
      "votes_change_rate_pct": 61.759825,
      "baseline_vote_share_pct_muni": 28.906533,
      "target_vote_share_pct_muni": 43.716972,
      "vote_share_delta_pct_pt": 14.810439
    },
    {
      "prefecture_code": "09",
      "prefecture_name": "栃木県",
      "prefecture_name_en": "Tochigi",
      "jis_code": "092029",
      "municipality_name": "足利市",
      "municipality_name_en": "Ashikaga-shi",
      "baseline_votes": 14192.777,
      "target_votes": 22684.0,
      "votes_delta": 8491.223,
      "votes_change_rate_pct": 59.827777,
      "baseline_vote_share_pct_muni": 25.238783,
      "target_vote_share_pct_muni": 40.491958,
      "vote_share_delta_pct_pt": 15.253175
    },
    {
      "prefecture_code": "09",
      "prefecture_name": "栃木県",
      "prefecture_name_en": "Tochigi",
      "jis_code": "092142",
      "municipality_name": "さくら市",
      "municipality_name_en": "Sakura-shi",
      "baseline_votes": 4986.0,
      "target_votes": 7906.0,
      "votes_delta": 2920.0,
      "votes_change_rate_pct": 58.563979,
      "baseline_vote_share_pct_muni": 26.54528,
      "target_vote_share_pct_muni": 42.149597,
      "vote_share_delta_pct_pt": 15.604317
    },
    {
      "prefecture_code": "09",
      "prefecture_name": "栃木県",
      "prefecture_name_en": "Tochigi",
      "jis_code": "093017",
      "municipality_name": "上三川町",
      "municipality_name_en": "Kaminokawa-machi",
      "baseline_votes": 3083.0,
      "target_votes": 4887.0,
      "votes_delta": 1804.0,
      "votes_change_rate_pct": 58.514434,
      "baseline_vote_share_pct_muni": 22.420188,
      "target_vote_share_pct_muni": 38.875189,
      "vote_share_delta_pct_pt": 16.455001
    },
    {
      "prefecture_code": "09",
      "prefecture_name": "栃木県",
      "prefecture_name_en": "Tochigi",
      "jis_code": "092045",
      "municipality_name": "佐野市",
      "municipality_name_en": "Sano-shi",
      "baseline_votes": 12071.176,
      "target_votes": 18837.0,
      "votes_delta": 6765.824,
      "votes_change_rate_pct": 56.049419,
      "baseline_vote_share_pct_muni": 25.522615,
      "target_vote_share_pct_muni": 40.34742,
      "vote_share_delta_pct_pt": 14.824805
    },
    {
      "prefecture_code": "09",
      "prefecture_name": "栃木県",
      "prefecture_name_en": "Tochigi",
      "jis_code": "093645",
      "municipality_name": "野木町",
      "municipality_name_en": "Nogi-machi",
      "baseline_votes": 2710.0,
      "target_votes": 4185.0,
      "votes_delta": 1475.0,
      "votes_change_rate_pct": 54.428044,
      "baseline_vote_share_pct_muni": 23.335917,
      "target_vote_share_pct_muni": 36.983033,
      "vote_share_delta_pct_pt": 13.647116
    },
    {
      "prefecture_code": "09",
      "prefecture_name": "栃木県",
      "prefecture_name_en": "Tochigi",
      "jis_code": "092169",
      "municipality_name": "下野市",
      "municipality_name_en": "Shimotsuke-shi",
      "baseline_votes": 7071.876,
      "target_votes": 10904.0,
      "votes_delta": 3832.124,
      "votes_change_rate_pct": 54.188224,
      "baseline_vote_share_pct_muni": 25.764631,
      "target_vote_share_pct_muni": 41.060401,
      "vote_share_delta_pct_pt": 15.29577
    },
    {
      "prefecture_code": "09",
      "prefecture_name": "栃木県",
      "prefecture_name_en": "Tochigi",
      "jis_code": "094110",
      "municipality_name": "那珂川町",
      "municipality_name_en": "Nakagawa-machi",
      "baseline_votes": 2332.148,
      "target_votes": 3553.0,
      "votes_delta": 1220.852,
      "votes_change_rate_pct": 52.348822,
      "baseline_vote_share_pct_muni": 35.314173,
      "target_vote_share_pct_muni": 47.633731,
      "vote_share_delta_pct_pt": 12.319558
    },
    {
      "prefecture_code": "09",
      "prefecture_name": "栃木県",
      "prefecture_name_en": "Tochigi",
      "jis_code": "092053",
      "municipality_name": "鹿沼市",
      "municipality_name_en": "Kanuma-shi",
      "baseline_votes": 11354.098,
      "target_votes": 17289.0,
      "votes_delta": 5934.902,
      "votes_change_rate_pct": 52.271013,
      "baseline_vote_share_pct_muni": 28.137634,
      "target_vote_share_pct_muni": 43.860673,
      "vote_share_delta_pct_pt": 15.723039
    },
    {
      "prefecture_code": "09",
      "prefecture_name": "栃木県",
      "prefecture_name_en": "Tochigi",
      "jis_code": "093424",
      "municipality_name": "益子町",
      "municipality_name_en": "Mashiko-machi",
      "baseline_votes": 2906.0,
      "target_votes": 4360.0,
      "votes_delta": 1454.0,
      "votes_change_rate_pct": 50.034412,
      "baseline_vote_share_pct_muni": 28.481819,
      "target_vote_share_pct_muni": 41.710514,
      "vote_share_delta_pct_pt": 13.228695
    },
    {
      "prefecture_code": "09",
      "prefecture_name": "栃木県",
      "prefecture_name_en": "Tochigi",
      "jis_code": "092150",
      "municipality_name": "那須烏山市",
      "municipality_name_en": "Nasukarasuyama-shi",
      "baseline_votes": 3661.032,
      "target_votes": 5451.0,
      "votes_delta": 1789.968,
      "votes_change_rate_pct": 48.892443,
      "baseline_vote_share_pct_muni": 33.059707,
      "target_vote_share_pct_muni": 44.592605,
      "vote_share_delta_pct_pt": 11.532898
    },
    {
      "prefecture_code": "09",
      "prefecture_name": "栃木県",
      "prefecture_name_en": "Tochigi",
      "jis_code": "093610",
      "municipality_name": "壬生町",
      "municipality_name_en": "Mibu-machi",
      "baseline_votes": 5034.117,
      "target_votes": 7385.0,
      "votes_delta": 2350.883,
      "votes_change_rate_pct": 46.699014,
      "baseline_vote_share_pct_muni": 29.736647,
      "target_vote_share_pct_muni": 44.565808,
      "vote_share_delta_pct_pt": 14.829161
    },
    {
      "prefecture_code": "09",
      "prefecture_name": "栃木県",
      "prefecture_name_en": "Tochigi",
      "jis_code": "092061",
      "municipality_name": "日光市",
      "municipality_name_en": "Nikko-shi",
      "baseline_votes": 9794.973,
      "target_votes": 14359.0,
      "votes_delta": 4564.027,
      "votes_change_rate_pct": 46.595606,
      "baseline_vote_share_pct_muni": 29.723169,
      "target_vote_share_pct_muni": 42.642473,
      "vote_share_delta_pct_pt": 12.919304
    },
    {
      "prefecture_code": "09",
      "prefecture_name": "栃木県",
      "prefecture_name_en": "Tochigi",
      "jis_code": "092037",
      "municipality_name": "栃木市",
      "municipality_name_en": "Tochigi-shi",
      "baseline_votes": 17940.155,
      "target_votes": 26276.0,
      "votes_delta": 8335.845,
      "votes_change_rate_pct": 46.464732,
      "baseline_vote_share_pct_muni": 27.170938,
      "target_vote_share_pct_muni": 41.862762,
      "vote_share_delta_pct_pt": 14.691824
    },
    {
      "prefecture_code": "09",
      "prefecture_name": "栃木県",
      "prefecture_name_en": "Tochigi",
      "jis_code": "093459",
      "municipality_name": "芳賀町",
      "municipality_name_en": "Haga-machi",
      "baseline_votes": 2280.999,
      "target_votes": 3305.0,
      "votes_delta": 1024.001,
      "votes_change_rate_pct": 44.892654,
      "baseline_vote_share_pct_muni": 30.9288,
      "target_vote_share_pct_muni": 44.941528,
      "vote_share_delta_pct_pt": 14.012728
    },
    {
      "prefecture_code": "09",
      "prefecture_name": "栃木県",
      "prefecture_name_en": "Tochigi",
      "jis_code": "093840",
      "municipality_name": "塩谷町",
      "municipality_name_en": "Shioya-machi",
      "baseline_votes": 1407.071,
      "target_votes": 2005.0,
      "votes_delta": 597.929,
      "votes_change_rate_pct": 42.494586,
      "baseline_vote_share_pct_muni": 32.279674,
      "target_vote_share_pct_muni": 44.664736,
      "vote_share_delta_pct_pt": 12.385062
    },
    {
      "prefecture_code": "09",
      "prefecture_name": "栃木県",
      "prefecture_name_en": "Tochigi",
      "jis_code": "092010",
      "municipality_name": "宇都宮市",
      "municipality_name_en": "Utsunomiya-shi",
      "baseline_votes": 52821.452,
      "target_votes": 74539.0,
      "votes_delta": 21717.548,
      "votes_change_rate_pct": 41.115015,
      "baseline_vote_share_pct_muni": 23.250209,
      "target_vote_share_pct_muni": 37.431391,
      "vote_share_delta_pct_pt": 14.181182
    },
    {
      "prefecture_code": "09",
      "prefecture_name": "栃木県",
      "prefecture_name_en": "Tochigi",
      "jis_code": "093866",
      "municipality_name": "高根沢町",
      "municipality_name_en": "Takanezawa-machi",
      "baseline_votes": 3952.539,
      "target_votes": 5392.0,
      "votes_delta": 1439.461,
      "votes_change_rate_pct": 36.418641,
      "baseline_vote_share_pct_muni": 27.737116,
      "target_vote_share_pct_muni": 41.704695,
      "vote_share_delta_pct_pt": 13.967579
    },
    {
      "prefecture_code": "09",
      "prefecture_name": "栃木県",
      "prefecture_name_en": "Tochigi",
      "jis_code": "093432",
      "municipality_name": "茂木町",
      "municipality_name_en": "Motegi-machi",
      "baseline_votes": 2305.0,
      "target_votes": 2979.0,
      "votes_delta": 674.0,
      "votes_change_rate_pct": 29.240781,
      "baseline_vote_share_pct_muni": 38.876708,
      "target_vote_share_pct_muni": 50.067227,
      "vote_share_delta_pct_pt": 11.190519
    }
  ]
}
