{
  "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": "TMI",
    "party_label": "みらい",
    "party_label_en": "Team Mirai",
    "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": 263.300971,
    "max_votes_change_rate_pct": 616.883117
  },
  "municipalities": [
    {
      "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": 77.0,
      "target_votes": 552.0,
      "votes_delta": 475.0,
      "votes_change_rate_pct": 616.883117,
      "baseline_vote_share_pct_muni": 0.695322,
      "target_vote_share_pct_muni": 4.515707,
      "vote_share_delta_pct_pt": 3.820385
    },
    {
      "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": 45.0,
      "target_votes": 288.0,
      "votes_delta": 243.0,
      "votes_change_rate_pct": 540.0,
      "baseline_vote_share_pct_muni": 0.681405,
      "target_vote_share_pct_muni": 3.861107,
      "vote_share_delta_pct_pt": 3.179702
    },
    {
      "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": 31.0,
      "target_votes": 188.0,
      "votes_delta": 157.0,
      "votes_change_rate_pct": 506.451613,
      "baseline_vote_share_pct_muni": 0.711172,
      "target_vote_share_pct_muni": 4.188015,
      "vote_share_delta_pct_pt": 3.476843
    },
    {
      "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": 131.0,
      "target_votes": 760.0,
      "votes_delta": 629.0,
      "votes_change_rate_pct": 480.152672,
      "baseline_vote_share_pct_muni": 1.128046,
      "target_vote_share_pct_muni": 6.716154,
      "vote_share_delta_pct_pt": 5.588108
    },
    {
      "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": 41.0,
      "target_votes": 237.0,
      "votes_delta": 196.0,
      "votes_change_rate_pct": 478.04878,
      "baseline_vote_share_pct_muni": 0.691516,
      "target_vote_share_pct_muni": 3.983193,
      "vote_share_delta_pct_pt": 3.291677
    },
    {
      "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": 294.0,
      "target_votes": 1600.0,
      "votes_delta": 1306.0,
      "votes_change_rate_pct": 444.217687,
      "baseline_vote_share_pct_muni": 0.892153,
      "target_vote_share_pct_muni": 4.751581,
      "vote_share_delta_pct_pt": 3.859428
    },
    {
      "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": 147.0,
      "target_votes": 788.0,
      "votes_delta": 641.0,
      "votes_change_rate_pct": 436.054422,
      "baseline_vote_share_pct_muni": 1.079057,
      "target_vote_share_pct_muni": 5.408002,
      "vote_share_delta_pct_pt": 4.328945
    },
    {
      "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": 50.0,
      "target_votes": 255.0,
      "votes_delta": 205.0,
      "votes_change_rate_pct": 410.0,
      "baseline_vote_share_pct_muni": 0.945716,
      "target_vote_share_pct_muni": 4.761016,
      "vote_share_delta_pct_pt": 3.8153
    },
    {
      "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": 339.0,
      "target_votes": 1707.0,
      "votes_delta": 1368.0,
      "votes_change_rate_pct": 403.539823,
      "baseline_vote_share_pct_muni": 1.173457,
      "target_vote_share_pct_muni": 5.365225,
      "vote_share_delta_pct_pt": 4.191768
    },
    {
      "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": 388.0,
      "target_votes": 1936.0,
      "votes_delta": 1548.0,
      "votes_change_rate_pct": 398.969072,
      "baseline_vote_share_pct_muni": 0.961538,
      "target_vote_share_pct_muni": 4.911462,
      "vote_share_delta_pct_pt": 3.949924
    },
    {
      "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": 137.0,
      "target_votes": 672.0,
      "votes_delta": 535.0,
      "votes_change_rate_pct": 390.510949,
      "baseline_vote_share_pct_muni": 1.211639,
      "target_vote_share_pct_muni": 5.437333,
      "vote_share_delta_pct_pt": 4.225694
    },
    {
      "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": 728.0,
      "target_votes": 3526.0,
      "votes_delta": 2798.0,
      "votes_change_rate_pct": 384.340659,
      "baseline_vote_share_pct_muni": 1.102579,
      "target_vote_share_pct_muni": 5.617602,
      "vote_share_delta_pct_pt": 4.515023
    },
    {
      "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": 721.0,
      "target_votes": 3443.0,
      "votes_delta": 2722.0,
      "votes_change_rate_pct": 377.531207,
      "baseline_vote_share_pct_muni": 1.282142,
      "target_vote_share_pct_muni": 6.14591,
      "vote_share_delta_pct_pt": 4.863768
    },
    {
      "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": 678.0,
      "target_votes": 3215.0,
      "votes_delta": 2537.0,
      "votes_change_rate_pct": 374.188791,
      "baseline_vote_share_pct_muni": 1.411794,
      "target_vote_share_pct_muni": 6.161128,
      "vote_share_delta_pct_pt": 4.749334
    },
    {
      "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": 205.0,
      "target_votes": 956.0,
      "votes_delta": 751.0,
      "votes_change_rate_pct": 366.341463,
      "baseline_vote_share_pct_muni": 1.438596,
      "target_vote_share_pct_muni": 7.39423,
      "vote_share_delta_pct_pt": 5.955634
    },
    {
      "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": 573.0,
      "target_votes": 2650.0,
      "votes_delta": 2077.0,
      "votes_change_rate_pct": 362.478185,
      "baseline_vote_share_pct_muni": 1.211519,
      "target_vote_share_pct_muni": 5.676098,
      "vote_share_delta_pct_pt": 4.464579
    },
    {
      "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": 204.0,
      "target_votes": 928.0,
      "votes_delta": 724.0,
      "votes_change_rate_pct": 354.901961,
      "baseline_vote_share_pct_muni": 1.205033,
      "target_vote_share_pct_muni": 5.600145,
      "vote_share_delta_pct_pt": 4.395112
    },
    {
      "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": 136.0,
      "target_votes": 604.0,
      "votes_delta": 468.0,
      "votes_change_rate_pct": 344.117647,
      "baseline_vote_share_pct_muni": 1.332941,
      "target_vote_share_pct_muni": 5.778245,
      "vote_share_delta_pct_pt": 4.445304
    },
    {
      "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": 272.0,
      "target_votes": 1170.0,
      "votes_delta": 898.0,
      "votes_change_rate_pct": 330.147059,
      "baseline_vote_share_pct_muni": 1.448118,
      "target_vote_share_pct_muni": 6.237671,
      "vote_share_delta_pct_pt": 4.789553
    },
    {
      "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": 377.0,
      "target_votes": 1598.0,
      "votes_delta": 1221.0,
      "votes_change_rate_pct": 323.872679,
      "baseline_vote_share_pct_muni": 1.185535,
      "target_vote_share_pct_muni": 4.784574,
      "vote_share_delta_pct_pt": 3.599039
    },
    {
      "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": 191.0,
      "target_votes": 806.0,
      "votes_delta": 615.0,
      "votes_change_rate_pct": 321.989529,
      "baseline_vote_share_pct_muni": 1.38899,
      "target_vote_share_pct_muni": 6.411582,
      "vote_share_delta_pct_pt": 5.022592
    },
    {
      "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": 80.0,
      "target_votes": 333.0,
      "votes_delta": 253.0,
      "votes_change_rate_pct": 316.25,
      "baseline_vote_share_pct_muni": 1.084746,
      "target_vote_share_pct_muni": 4.528148,
      "vote_share_delta_pct_pt": 3.443402
    },
    {
      "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": 1163.0,
      "target_votes": 4320.0,
      "votes_delta": 3157.0,
      "votes_change_rate_pct": 271.453138,
      "baseline_vote_share_pct_muni": 1.63345,
      "target_vote_share_pct_muni": 6.158057,
      "vote_share_delta_pct_pt": 4.524607
    },
    {
      "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": 4084.0,
      "target_votes": 15073.0,
      "votes_delta": 10989.0,
      "votes_change_rate_pct": 269.074437,
      "baseline_vote_share_pct_muni": 1.797638,
      "target_vote_share_pct_muni": 7.569237,
      "vote_share_delta_pct_pt": 5.771599
    },
    {
      "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": 515.0,
      "target_votes": 1871.0,
      "votes_delta": 1356.0,
      "votes_change_rate_pct": 263.300971,
      "baseline_vote_share_pct_muni": 1.876275,
      "target_vote_share_pct_muni": 7.045489,
      "vote_share_delta_pct_pt": 5.169214
    }
  ]
}
