{
  "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",
  "point_grain": "municipality",
  "selector": {
    "prefecture_code": "",
    "prefecture_name": "",
    "prefecture_name_en": "",
    "region_id": "kanto",
    "region_name": "関東地方",
    "region_name_en": "Kanto Region",
    "party_id": "ISH",
    "party_label": "維新",
    "party_label_en": "Japan Innovation Party (Ishin)",
    "scope": "region",
    "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": 360,
    "municipality_count": 360,
    "min_votes_change_rate_pct": -50.0,
    "max_votes_change_rate_pct": 100.0
  },
  "municipalities": [
    {
      "prefecture_code": "10",
      "prefecture_name": "群馬県",
      "prefecture_name_en": "Gunma",
      "jis_code": "103837",
      "municipality_name": "南牧村",
      "municipality_name_en": "Nammoku-mura",
      "baseline_votes": 9.0,
      "target_votes": 18.0,
      "votes_delta": 9.0,
      "votes_change_rate_pct": 100.0,
      "baseline_vote_share_pct_muni": 1.012373,
      "target_vote_share_pct_muni": 2.036199,
      "vote_share_delta_pct_pt": 1.023826
    },
    {
      "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": 301.0,
      "target_votes": 539.0,
      "votes_delta": 238.0,
      "votes_change_rate_pct": 79.069767,
      "baseline_vote_share_pct_muni": 2.718078,
      "target_vote_share_pct_muni": 4.409359,
      "vote_share_delta_pct_pt": 1.691281
    },
    {
      "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": 164.0,
      "target_votes": 293.0,
      "votes_delta": 129.0,
      "votes_change_rate_pct": 78.658537,
      "baseline_vote_share_pct_muni": 2.483343,
      "target_vote_share_pct_muni": 3.928141,
      "vote_share_delta_pct_pt": 1.444798
    },
    {
      "prefecture_code": "10",
      "prefecture_name": "群馬県",
      "prefecture_name_en": "Gunma",
      "jis_code": "103667",
      "municipality_name": "上野村",
      "municipality_name_en": "Ueno-mura",
      "baseline_votes": 9.0,
      "target_votes": 16.0,
      "votes_delta": 7.0,
      "votes_change_rate_pct": 77.777778,
      "baseline_vote_share_pct_muni": 1.388889,
      "target_vote_share_pct_muni": 2.472952,
      "vote_share_delta_pct_pt": 1.084063
    },
    {
      "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": 514.0,
      "target_votes": 913.0,
      "votes_delta": 399.0,
      "votes_change_rate_pct": 77.626459,
      "baseline_vote_share_pct_muni": 3.73791,
      "target_vote_share_pct_muni": 7.262748,
      "vote_share_delta_pct_pt": 3.524838
    },
    {
      "prefecture_code": "10",
      "prefecture_name": "群馬県",
      "prefecture_name_en": "Gunma",
      "jis_code": "104256",
      "municipality_name": "嬬恋村",
      "municipality_name_en": "Tsumagoi-mura",
      "baseline_votes": 114.0,
      "target_votes": 201.0,
      "votes_delta": 87.0,
      "votes_change_rate_pct": 76.315789,
      "baseline_vote_share_pct_muni": 2.641947,
      "target_vote_share_pct_muni": 4.31701,
      "vote_share_delta_pct_pt": 1.675063
    },
    {
      "prefecture_code": "10",
      "prefecture_name": "群馬県",
      "prefecture_name_en": "Gunma",
      "jis_code": "104248",
      "municipality_name": "長野原町",
      "municipality_name_en": "Naganohara-machi",
      "baseline_votes": 70.0,
      "target_votes": 120.0,
      "votes_delta": 50.0,
      "votes_change_rate_pct": 71.428571,
      "baseline_vote_share_pct_muni": 2.575423,
      "target_vote_share_pct_muni": 4.241782,
      "vote_share_delta_pct_pt": 1.666359
    },
    {
      "prefecture_code": "10",
      "prefecture_name": "群馬県",
      "prefecture_name_en": "Gunma",
      "jis_code": "103675",
      "municipality_name": "神流町",
      "municipality_name_en": "Kanna-machi",
      "baseline_votes": 14.0,
      "target_votes": 24.0,
      "votes_delta": 10.0,
      "votes_change_rate_pct": 71.428571,
      "baseline_vote_share_pct_muni": 1.414141,
      "target_vote_share_pct_muni": 2.40481,
      "vote_share_delta_pct_pt": 0.990669
    },
    {
      "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": 10137.746,
      "target_votes": 16962.0,
      "votes_delta": 6824.254,
      "votes_change_rate_pct": 67.315299,
      "baseline_vote_share_pct_muni": 4.462291,
      "target_vote_share_pct_muni": 8.51784,
      "vote_share_delta_pct_pt": 4.055549
    },
    {
      "prefecture_code": "13",
      "prefecture_name": "東京都",
      "prefecture_name_en": "Tokyo",
      "jis_code": "133817",
      "municipality_name": "三宅村",
      "municipality_name_en": "Miyake-mura",
      "baseline_votes": 33.0,
      "target_votes": 55.0,
      "votes_delta": 22.0,
      "votes_change_rate_pct": 66.666667,
      "baseline_vote_share_pct_muni": 3.225806,
      "target_vote_share_pct_muni": 4.968383,
      "vote_share_delta_pct_pt": 1.742577
    },
    {
      "prefecture_code": "10",
      "prefecture_name": "群馬県",
      "prefecture_name_en": "Gunma",
      "jis_code": "104299",
      "municipality_name": "東吾妻町",
      "municipality_name_en": "Higashiagatsuma-machi",
      "baseline_votes": 161.0,
      "target_votes": 267.0,
      "votes_delta": 106.0,
      "votes_change_rate_pct": 65.838509,
      "baseline_vote_share_pct_muni": 2.537031,
      "target_vote_share_pct_muni": 3.987455,
      "vote_share_delta_pct_pt": 1.450424
    },
    {
      "prefecture_code": "10",
      "prefecture_name": "群馬県",
      "prefecture_name_en": "Gunma",
      "jis_code": "104485",
      "municipality_name": "昭和村",
      "municipality_name_en": "Showa-mura",
      "baseline_votes": 83.0,
      "target_votes": 132.0,
      "votes_delta": 49.0,
      "votes_change_rate_pct": 59.036145,
      "baseline_vote_share_pct_muni": 2.739274,
      "target_vote_share_pct_muni": 4.121136,
      "vote_share_delta_pct_pt": 1.381862
    },
    {
      "prefecture_code": "08",
      "prefecture_name": "茨城県",
      "prefecture_name_en": "Ibaraki",
      "jis_code": "085219",
      "municipality_name": "八千代町",
      "municipality_name_en": "Yachiyo-machi",
      "baseline_votes": 309.0,
      "target_votes": 487.0,
      "votes_delta": 178.0,
      "votes_change_rate_pct": 57.605178,
      "baseline_vote_share_pct_muni": 3.563603,
      "target_vote_share_pct_muni": 5.356357,
      "vote_share_delta_pct_pt": 1.792754
    },
    {
      "prefecture_code": "08",
      "prefecture_name": "茨城県",
      "prefecture_name_en": "Ibaraki",
      "jis_code": "085464",
      "municipality_name": "境町",
      "municipality_name_en": "Sakai-machi",
      "baseline_votes": 389.0,
      "target_votes": 612.0,
      "votes_delta": 223.0,
      "votes_change_rate_pct": 57.326478,
      "baseline_vote_share_pct_muni": 4.05335,
      "target_vote_share_pct_muni": 5.825797,
      "vote_share_delta_pct_pt": 1.772447
    },
    {
      "prefecture_code": "10",
      "prefecture_name": "群馬県",
      "prefecture_name_en": "Gunma",
      "jis_code": "104264",
      "municipality_name": "草津町",
      "municipality_name_en": "Kusatsu-machi",
      "baseline_votes": 64.0,
      "target_votes": 100.0,
      "votes_delta": 36.0,
      "votes_change_rate_pct": 56.25,
      "baseline_vote_share_pct_muni": 2.315485,
      "target_vote_share_pct_muni": 3.809524,
      "vote_share_delta_pct_pt": 1.494039
    },
    {
      "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": 906.0,
      "target_votes": 1412.0,
      "votes_delta": 506.0,
      "votes_change_rate_pct": 55.84989,
      "baseline_vote_share_pct_muni": 3.136142,
      "target_vote_share_pct_muni": 4.438019,
      "vote_share_delta_pct_pt": 1.301877
    },
    {
      "prefecture_code": "10",
      "prefecture_name": "群馬県",
      "prefecture_name_en": "Gunma",
      "jis_code": "104280",
      "municipality_name": "高山村",
      "municipality_name_en": "Takayama-mura",
      "baseline_votes": 39.0,
      "target_votes": 60.0,
      "votes_delta": 21.0,
      "votes_change_rate_pct": 53.846154,
      "baseline_vote_share_pct_muni": 2.356495,
      "target_vote_share_pct_muni": 3.601441,
      "vote_share_delta_pct_pt": 1.244946
    },
    {
      "prefecture_code": "10",
      "prefecture_name": "群馬県",
      "prefecture_name_en": "Gunma",
      "jis_code": "104493",
      "municipality_name": "みなかみ町",
      "municipality_name_en": "Minakami-machi",
      "baseline_votes": 238.0,
      "target_votes": 365.0,
      "votes_delta": 127.0,
      "votes_change_rate_pct": 53.361345,
      "baseline_vote_share_pct_muni": 2.891859,
      "target_vote_share_pct_muni": 4.372829,
      "vote_share_delta_pct_pt": 1.48097
    },
    {
      "prefecture_code": "08",
      "prefecture_name": "茨城県",
      "prefecture_name_en": "Ibaraki",
      "jis_code": "083640",
      "municipality_name": "大子町",
      "municipality_name_en": "Daigo-machi",
      "baseline_votes": 210.0,
      "target_votes": 317.0,
      "votes_delta": 107.0,
      "votes_change_rate_pct": 50.952381,
      "baseline_vote_share_pct_muni": 2.8,
      "target_vote_share_pct_muni": 4.244209,
      "vote_share_delta_pct_pt": 1.444209
    },
    {
      "prefecture_code": "10",
      "prefecture_name": "群馬県",
      "prefecture_name_en": "Gunma",
      "jis_code": "104442",
      "municipality_name": "川場村",
      "municipality_name_en": "Kawaba-mura",
      "baseline_votes": 38.0,
      "target_votes": 57.0,
      "votes_delta": 19.0,
      "votes_change_rate_pct": 50.0,
      "baseline_vote_share_pct_muni": 2.415766,
      "target_vote_share_pct_muni": 3.566959,
      "vote_share_delta_pct_pt": 1.151193
    },
    {
      "prefecture_code": "10",
      "prefecture_name": "群馬県",
      "prefecture_name_en": "Gunma",
      "jis_code": "104213",
      "municipality_name": "中之条町",
      "municipality_name_en": "Nakanojo-machi",
      "baseline_votes": 206.0,
      "target_votes": 305.0,
      "votes_delta": 99.0,
      "votes_change_rate_pct": 48.058252,
      "baseline_vote_share_pct_muni": 2.595112,
      "target_vote_share_pct_muni": 3.758472,
      "vote_share_delta_pct_pt": 1.16336
    },
    {
      "prefecture_code": "10",
      "prefecture_name": "群馬県",
      "prefecture_name_en": "Gunma",
      "jis_code": "103845",
      "municipality_name": "甘楽町",
      "municipality_name_en": "Kanra-machi",
      "baseline_votes": 193.0,
      "target_votes": 283.0,
      "votes_delta": 90.0,
      "votes_change_rate_pct": 46.632124,
      "baseline_vote_share_pct_muni": 3.216131,
      "target_vote_share_pct_muni": 4.574107,
      "vote_share_delta_pct_pt": 1.357976
    },
    {
      "prefecture_code": "10",
      "prefecture_name": "群馬県",
      "prefecture_name_en": "Gunma",
      "jis_code": "104434",
      "municipality_name": "片品村",
      "municipality_name_en": "Katashina-mura",
      "baseline_votes": 46.0,
      "target_votes": 67.0,
      "votes_delta": 21.0,
      "votes_change_rate_pct": 45.652174,
      "baseline_vote_share_pct_muni": 2.38961,
      "target_vote_share_pct_muni": 3.487767,
      "vote_share_delta_pct_pt": 1.098157
    },
    {
      "prefecture_code": "10",
      "prefecture_name": "群馬県",
      "prefecture_name_en": "Gunma",
      "jis_code": "102105",
      "municipality_name": "富岡市",
      "municipality_name_en": "Tomioka-shi",
      "baseline_votes": 695.0,
      "target_votes": 1001.0,
      "votes_delta": 306.0,
      "votes_change_rate_pct": 44.028777,
      "baseline_vote_share_pct_muni": 3.488956,
      "target_vote_share_pct_muni": 4.999501,
      "vote_share_delta_pct_pt": 1.510545
    },
    {
      "prefecture_code": "12",
      "prefecture_name": "千葉県",
      "prefecture_name_en": "Chiba",
      "jis_code": "122289",
      "municipality_name": "四街道市",
      "municipality_name_en": "Yotsukaido-shi",
      "baseline_votes": 2048.445,
      "target_votes": 2944.0,
      "votes_delta": 895.555,
      "votes_change_rate_pct": 43.718772,
      "baseline_vote_share_pct_muni": 4.886325,
      "target_vote_share_pct_muni": 7.212504,
      "vote_share_delta_pct_pt": 2.326179
    },
    {
      "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": 1751.823,
      "target_votes": 2517.0,
      "votes_delta": 765.177,
      "votes_change_rate_pct": 43.678899,
      "baseline_vote_share_pct_muni": 3.647807,
      "target_vote_share_pct_muni": 4.823502,
      "vote_share_delta_pct_pt": 1.175695
    },
    {
      "prefecture_code": "10",
      "prefecture_name": "群馬県",
      "prefecture_name_en": "Gunma",
      "jis_code": "105228",
      "municipality_name": "明和町",
      "municipality_name_en": "Meiwa-machi",
      "baseline_votes": 158.0,
      "target_votes": 227.0,
      "votes_delta": 69.0,
      "votes_change_rate_pct": 43.670886,
      "baseline_vote_share_pct_muni": 2.901745,
      "target_vote_share_pct_muni": 4.167432,
      "vote_share_delta_pct_pt": 1.265687
    },
    {
      "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": 363.0,
      "target_votes": 520.0,
      "votes_delta": 157.0,
      "votes_change_rate_pct": 43.250689,
      "baseline_vote_share_pct_muni": 3.210401,
      "target_vote_share_pct_muni": 4.20746,
      "vote_share_delta_pct_pt": 0.997059
    },
    {
      "prefecture_code": "11",
      "prefecture_name": "埼玉県",
      "prefecture_name_en": "Saitama",
      "jis_code": "113468",
      "municipality_name": "川島町",
      "municipality_name_en": "Kawajima-machi",
      "baseline_votes": 297.0,
      "target_votes": 419.0,
      "votes_delta": 122.0,
      "votes_change_rate_pct": 41.077441,
      "baseline_vote_share_pct_muni": 3.451482,
      "target_vote_share_pct_muni": 4.534141,
      "vote_share_delta_pct_pt": 1.082659
    },
    {
      "prefecture_code": "10",
      "prefecture_name": "群馬県",
      "prefecture_name_en": "Gunma",
      "jis_code": "103446",
      "municipality_name": "榛東村",
      "municipality_name_en": "Shinto-mura",
      "baseline_votes": 226.0,
      "target_votes": 316.0,
      "votes_delta": 90.0,
      "votes_change_rate_pct": 39.823009,
      "baseline_vote_share_pct_muni": 3.322552,
      "target_vote_share_pct_muni": 4.841428,
      "vote_share_delta_pct_pt": 1.518876
    },
    {
      "prefecture_code": "13",
      "prefecture_name": "東京都",
      "prefecture_name_en": "Tokyo",
      "jis_code": "133825",
      "municipality_name": "御蔵島村",
      "municipality_name_en": "Mikurajima-mura",
      "baseline_votes": 8.0,
      "target_votes": 11.0,
      "votes_delta": 3.0,
      "votes_change_rate_pct": 37.5,
      "baseline_vote_share_pct_muni": 4.571429,
      "target_vote_share_pct_muni": 6.285714,
      "vote_share_delta_pct_pt": 1.714285
    },
    {
      "prefecture_code": "10",
      "prefecture_name": "群馬県",
      "prefecture_name_en": "Gunma",
      "jis_code": "102113",
      "municipality_name": "安中市",
      "municipality_name_en": "Annaka-shi",
      "baseline_votes": 846.052,
      "target_votes": 1160.0,
      "votes_delta": 313.948,
      "votes_change_rate_pct": 37.107412,
      "baseline_vote_share_pct_muni": 3.308639,
      "target_vote_share_pct_muni": 4.601714,
      "vote_share_delta_pct_pt": 1.293075
    },
    {
      "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": 504.0,
      "target_votes": 687.0,
      "votes_delta": 183.0,
      "votes_change_rate_pct": 36.309524,
      "baseline_vote_share_pct_muni": 3.699626,
      "target_vote_share_pct_muni": 4.714845,
      "vote_share_delta_pct_pt": 1.015219
    },
    {
      "prefecture_code": "11",
      "prefecture_name": "埼玉県",
      "prefecture_name_en": "Saitama",
      "jis_code": "113620",
      "municipality_name": "皆野町",
      "municipality_name_en": "Minano-machi",
      "baseline_votes": 152.0,
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}
