{
  "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": "08",
    "prefecture_name": "茨城県",
    "prefecture_name_en": "Ibaraki",
    "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": 44,
    "municipality_count": 44,
    "min_votes_change_rate_pct": 28.586583,
    "max_votes_change_rate_pct": 87.807738
  },
  "municipalities": [
    {
      "prefecture_code": "08",
      "prefecture_name": "茨城県",
      "prefecture_name_en": "Ibaraki",
      "jis_code": "082350",
      "municipality_name": "つくばみらい市",
      "municipality_name_en": "Tsukubamirai-shi",
      "baseline_votes": 5130.779,
      "target_votes": 9636.0,
      "votes_delta": 4505.221,
      "votes_change_rate_pct": 87.807738,
      "baseline_vote_share_pct_muni": 20.757258,
      "target_vote_share_pct_muni": 40.046546,
      "vote_share_delta_pct_pt": 19.289288
    },
    {
      "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": 2500.333,
      "target_votes": 4689.0,
      "votes_delta": 2188.667,
      "votes_change_rate_pct": 87.53502,
      "baseline_vote_share_pct_muni": 26.053277,
      "target_vote_share_pct_muni": 44.635888,
      "vote_share_delta_pct_pt": 18.582611
    },
    {
      "prefecture_code": "08",
      "prefecture_name": "茨城県",
      "prefecture_name_en": "Ibaraki",
      "jis_code": "082040",
      "municipality_name": "古河市",
      "municipality_name_en": "Koga-shi",
      "baseline_votes": 12253.284,
      "target_votes": 22924.0,
      "votes_delta": 10670.716,
      "votes_change_rate_pct": 87.08454,
      "baseline_vote_share_pct_muni": 21.7149,
      "target_vote_share_pct_muni": 40.602915,
      "vote_share_delta_pct_pt": 18.888015
    },
    {
      "prefecture_code": "08",
      "prefecture_name": "茨城県",
      "prefecture_name_en": "Ibaraki",
      "jis_code": "082287",
      "municipality_name": "坂東市",
      "municipality_name_en": "Bando-shi",
      "baseline_votes": 5422.0,
      "target_votes": 10114.0,
      "votes_delta": 4692.0,
      "votes_change_rate_pct": 86.536333,
      "baseline_vote_share_pct_muni": 27.246231,
      "target_vote_share_pct_muni": 48.015572,
      "vote_share_delta_pct_pt": 20.769341
    },
    {
      "prefecture_code": "08",
      "prefecture_name": "茨城県",
      "prefecture_name_en": "Ibaraki",
      "jis_code": "082325",
      "municipality_name": "神栖市",
      "municipality_name_en": "Kamisu-shi",
      "baseline_votes": 8125.704,
      "target_votes": 14919.0,
      "votes_delta": 6793.296,
      "votes_change_rate_pct": 83.602553,
      "baseline_vote_share_pct_muni": 21.528465,
      "target_vote_share_pct_muni": 43.687956,
      "vote_share_delta_pct_pt": 22.159491
    },
    {
      "prefecture_code": "08",
      "prefecture_name": "茨城県",
      "prefecture_name_en": "Ibaraki",
      "jis_code": "082201",
      "municipality_name": "つくば市",
      "municipality_name_en": "Tsukuba-shi",
      "baseline_votes": 24076.68,
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      "votes_delta": 19990.32,
      "votes_change_rate_pct": 83.027726,
      "baseline_vote_share_pct_muni": 20.419887,
      "target_vote_share_pct_muni": 38.209155,
      "vote_share_delta_pct_pt": 17.789268
    },
    {
      "prefecture_code": "08",
      "prefecture_name": "茨城県",
      "prefecture_name_en": "Ibaraki",
      "jis_code": "082244",
      "municipality_name": "守谷市",
      "municipality_name_en": "Moriya-shi",
      "baseline_votes": 6907.027,
      "target_votes": 12533.0,
      "votes_delta": 5625.973,
      "votes_change_rate_pct": 81.452888,
      "baseline_vote_share_pct_muni": 19.937728,
      "target_vote_share_pct_muni": 37.04481,
      "vote_share_delta_pct_pt": 17.107082
    },
    {
      "prefecture_code": "08",
      "prefecture_name": "茨城県",
      "prefecture_name_en": "Ibaraki",
      "jis_code": "082112",
      "municipality_name": "常総市",
      "municipality_name_en": "Joso-shi",
      "baseline_votes": 6132.136,
      "target_votes": 10898.0,
      "votes_delta": 4765.864,
      "votes_change_rate_pct": 77.719477,
      "baseline_vote_share_pct_muni": 25.738241,
      "target_vote_share_pct_muni": 45.22367,
      "vote_share_delta_pct_pt": 19.485429
    },
    {
      "prefecture_code": "08",
      "prefecture_name": "茨城県",
      "prefecture_name_en": "Ibaraki",
      "jis_code": "082171",
      "municipality_name": "取手市",
      "municipality_name_en": "Toride-shi",
      "baseline_votes": 9895.841,
      "target_votes": 17336.0,
      "votes_delta": 7440.159,
      "votes_change_rate_pct": 75.184706,
      "baseline_vote_share_pct_muni": 19.418078,
      "target_vote_share_pct_muni": 35.871544,
      "vote_share_delta_pct_pt": 16.453466
    },
    {
      "prefecture_code": "08",
      "prefecture_name": "茨城県",
      "prefecture_name_en": "Ibaraki",
      "jis_code": "082031",
      "municipality_name": "土浦市",
      "municipality_name_en": "Tsuchiura-shi",
      "baseline_votes": 14161.518,
      "target_votes": 24636.0,
      "votes_delta": 10474.482,
      "votes_change_rate_pct": 73.964401,
      "baseline_vote_share_pct_muni": 22.442621,
      "target_vote_share_pct_muni": 40.041608,
      "vote_share_delta_pct_pt": 17.598987
    },
    {
      "prefecture_code": "08",
      "prefecture_name": "茨城県",
      "prefecture_name_en": "Ibaraki",
      "jis_code": "082309",
      "municipality_name": "かすみがうら市",
      "municipality_name_en": "Kasumigaura-shi",
      "baseline_votes": 4696.589,
      "target_votes": 8054.0,
      "votes_delta": 3357.411,
      "votes_change_rate_pct": 71.486157,
      "baseline_vote_share_pct_muni": 26.259933,
      "target_vote_share_pct_muni": 44.794216,
      "vote_share_delta_pct_pt": 18.534283
    },
    {
      "prefecture_code": "08",
      "prefecture_name": "茨城県",
      "prefecture_name_en": "Ibaraki",
      "jis_code": "083410",
      "municipality_name": "東海村",
      "municipality_name_en": "Tokai-mura",
      "baseline_votes": 4185.0,
      "target_votes": 7125.0,
      "votes_delta": 2940.0,
      "votes_change_rate_pct": 70.250896,
      "baseline_vote_share_pct_muni": 23.215177,
      "target_vote_share_pct_muni": 40.997756,
      "vote_share_delta_pct_pt": 17.782579
    },
    {
      "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": 2490.134,
      "target_votes": 4234.0,
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      "votes_change_rate_pct": 70.03101,
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      "target_vote_share_pct_muni": 46.568412,
      "vote_share_delta_pct_pt": 17.850456
    },
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      "prefecture_code": "08",
      "prefecture_name": "茨城県",
      "prefecture_name_en": "Ibaraki",
      "jis_code": "084433",
      "municipality_name": "阿見町",
      "municipality_name_en": "Ami-machi",
      "baseline_votes": 5054.814,
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      "votes_change_rate_pct": 70.016147,
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      "target_vote_share_pct_muni": 40.822725,
      "vote_share_delta_pct_pt": 17.889038
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      "prefecture_code": "08",
      "prefecture_name": "茨城県",
      "prefecture_name_en": "Ibaraki",
      "jis_code": "082023",
      "municipality_name": "日立市",
      "municipality_name_en": "Hitachi-shi",
      "baseline_votes": 16242.684,
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      "vote_share_delta_pct_pt": 15.78482
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      "prefecture_code": "08",
      "prefecture_name": "茨城県",
      "prefecture_name_en": "Ibaraki",
      "jis_code": "082279",
      "municipality_name": "筑西市",
      "municipality_name_en": "Chikusei-shi",
      "baseline_votes": 11510.758,
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      "votes_change_rate_pct": 67.043734,
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      "target_vote_share_pct_muni": 45.104387,
      "vote_share_delta_pct_pt": 17.350902
    },
    {
      "prefecture_code": "08",
      "prefecture_name": "茨城県",
      "prefecture_name_en": "Ibaraki",
      "jis_code": "082104",
      "municipality_name": "下妻市",
      "municipality_name_en": "Shimotsuma-shi",
      "baseline_votes": 4702.065,
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      "votes_change_rate_pct": 66.480047,
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      "target_vote_share_pct_muni": 46.465246,
      "vote_share_delta_pct_pt": 18.778353
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      "prefecture_code": "08",
      "prefecture_name": "茨城県",
      "prefecture_name_en": "Ibaraki",
      "jis_code": "082058",
      "municipality_name": "石岡市",
      "municipality_name_en": "Ishioka-shi",
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      "vote_share_delta_pct_pt": 17.204231
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      "prefecture_code": "08",
      "prefecture_name": "茨城県",
      "prefecture_name_en": "Ibaraki",
      "jis_code": "082074",
      "municipality_name": "結城市",
      "municipality_name_en": "Yuki-shi",
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      "vote_share_delta_pct_pt": 16.405676
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      "prefecture_code": "08",
      "prefecture_name": "茨城県",
      "prefecture_name_en": "Ibaraki",
      "jis_code": "085421",
      "municipality_name": "五霞町",
      "municipality_name_en": "Goka-machi",
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      "prefecture_name_en": "Ibaraki",
      "jis_code": "082210",
      "municipality_name": "ひたちなか市",
      "municipality_name_en": "Hitachinaka-shi",
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      "vote_share_delta_pct_pt": 16.609002
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      "prefecture_code": "08",
      "prefecture_name": "茨城県",
      "prefecture_name_en": "Ibaraki",
      "jis_code": "082198",
      "municipality_name": "牛久市",
      "municipality_name_en": "Ushiku-shi",
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      "vote_share_delta_pct_pt": 14.70124
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      "prefecture_name": "茨城県",
      "prefecture_name_en": "Ibaraki",
      "jis_code": "082295",
      "municipality_name": "稲敷市",
      "municipality_name_en": "Inashiki-shi",
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      "vote_share_delta_pct_pt": 18.34039
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      "prefecture_code": "08",
      "prefecture_name": "茨城県",
      "prefecture_name_en": "Ibaraki",
      "jis_code": "082155",
      "municipality_name": "北茨城市",
      "municipality_name_en": "Kitaibaraki-shi",
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      "prefecture_name": "茨城県",
      "prefecture_name_en": "Ibaraki",
      "jis_code": "082082",
      "municipality_name": "龍ケ崎市",
      "municipality_name_en": "Ryugasaki-shi",
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      "prefecture_code": "08",
      "prefecture_name": "茨城県",
      "prefecture_name_en": "Ibaraki",
      "jis_code": "082368",
      "municipality_name": "小美玉市",
      "municipality_name_en": "Omitama-shi",
      "baseline_votes": 5688.473,
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      "votes_change_rate_pct": 53.872577,
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      "vote_share_delta_pct_pt": 17.14408
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      "prefecture_code": "08",
      "prefecture_name": "茨城県",
      "prefecture_name_en": "Ibaraki",
      "jis_code": "082317",
      "municipality_name": "桜川市",
      "municipality_name_en": "Sakuragawa-shi",
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      "prefecture_code": "08",
      "prefecture_name": "茨城県",
      "prefecture_name_en": "Ibaraki",
      "jis_code": "082333",
      "municipality_name": "行方市",
      "municipality_name_en": "Namegata-shi",
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      "vote_share_delta_pct_pt": 15.988171
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      "prefecture_code": "08",
      "prefecture_name": "茨城県",
      "prefecture_name_en": "Ibaraki",
      "jis_code": "082015",
      "municipality_name": "水戸市",
      "municipality_name_en": "Mito-shi",
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      "votes_change_rate_pct": 50.934716,
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      "vote_share_delta_pct_pt": 14.575237
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      "prefecture_code": "08",
      "prefecture_name": "茨城県",
      "prefecture_name_en": "Ibaraki",
      "jis_code": "084425",
      "municipality_name": "美浦村",
      "municipality_name_en": "Miho-mura",
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      "vote_share_delta_pct_pt": 15.004952
    },
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      "prefecture_code": "08",
      "prefecture_name": "茨城県",
      "prefecture_name_en": "Ibaraki",
      "jis_code": "083100",
      "municipality_name": "城里町",
      "municipality_name_en": "Shirosato-machi",
      "baseline_votes": 2255.97,
      "target_votes": 3351.0,
      "votes_delta": 1095.03,
      "votes_change_rate_pct": 48.539209,
      "baseline_vote_share_pct_muni": 27.183637,
      "target_vote_share_pct_muni": 40.940745,
      "vote_share_delta_pct_pt": 13.757108
    },
    {
      "prefecture_code": "08",
      "prefecture_name": "茨城県",
      "prefecture_name_en": "Ibaraki",
      "jis_code": "082341",
      "municipality_name": "鉾田市",
      "municipality_name_en": "Hokota-shi",
      "baseline_votes": 5156.58,
      "target_votes": 7625.0,
      "votes_delta": 2468.42,
      "votes_change_rate_pct": 47.869324,
      "baseline_vote_share_pct_muni": 27.826777,
      "target_vote_share_pct_muni": 43.135147,
      "vote_share_delta_pct_pt": 15.30837
    },
    {
      "prefecture_code": "08",
      "prefecture_name": "茨城県",
      "prefecture_name_en": "Ibaraki",
      "jis_code": "082163",
      "municipality_name": "笠間市",
      "municipality_name_en": "Kasama-shi",
      "baseline_votes": 8779.407,
      "target_votes": 12929.0,
      "votes_delta": 4149.593,
      "votes_change_rate_pct": 47.265072,
      "baseline_vote_share_pct_muni": 26.642209,
      "target_vote_share_pct_muni": 40.81768,
      "vote_share_delta_pct_pt": 14.175471
    },
    {
      "prefecture_code": "08",
      "prefecture_name": "茨城県",
      "prefecture_name_en": "Ibaraki",
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      "municipality_name": "常陸太田市",
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}
