{ "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": "06", "prefecture_name": "山形県", "prefecture_name_en": "Yamagata", "party_id": "ISH", "party_label": "維新", "party_label_en": "Japan Innovation Party (Ishin)", "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": 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"Yamagata", "jis_code": "062022", "municipality_name": "米沢市", "municipality_name_en": "Yonezawa-shi", "baseline_votes": 1298.0, "target_votes": 1571.0, "votes_delta": 273.0, "votes_change_rate_pct": 21.032357, "baseline_vote_share_pct_muni": 3.506876, "target_vote_share_pct_muni": 4.317357, "vote_share_delta_pct_pt": 0.810481 }, { "prefecture_code": "06", "prefecture_name": "山形県", "prefecture_name_en": "Yamagata", "jis_code": "062030", "municipality_name": "鶴岡市", "municipality_name_en": "Tsuruoka-shi", "baseline_votes": 1914.0, "target_votes": 2313.0, "votes_delta": 399.0, "votes_change_rate_pct": 20.846395, "baseline_vote_share_pct_muni": 3.271963, "target_vote_share_pct_muni": 3.991923, "vote_share_delta_pct_pt": 0.71996 }, { "prefecture_code": "06", "prefecture_name": "山形県", "prefecture_name_en": "Yamagata", "jis_code": "063649", "municipality_name": "真室川町", "municipality_name_en": "Mamurogawa-machi", "baseline_votes": 78.0, "target_votes": 94.0, "votes_delta": 16.0, 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"prefecture_name": "山形県", "prefecture_name_en": "Yamagata", "jis_code": "063029", "municipality_name": "中山町", "municipality_name_en": "Nakayama-machi", "baseline_votes": 157.0, "target_votes": 182.0, "votes_delta": 25.0, "votes_change_rate_pct": 15.923567, "baseline_vote_share_pct_muni": 2.783194, "target_vote_share_pct_muni": 3.358553, "vote_share_delta_pct_pt": 0.575359 }, { "prefecture_code": "06", "prefecture_name": "山形県", "prefecture_name_en": "Yamagata", "jis_code": "064289", "municipality_name": "庄内町", "municipality_name_en": "Shonai-machi", "baseline_votes": 353.0, "target_votes": 401.0, "votes_delta": 48.0, "votes_change_rate_pct": 13.597734, "baseline_vote_share_pct_muni": 3.313621, "target_vote_share_pct_muni": 4.157595, "vote_share_delta_pct_pt": 0.843974 }, { "prefecture_code": "06", "prefecture_name": "山形県", "prefecture_name_en": "Yamagata", "jis_code": "062057", "municipality_name": "新庄市", "municipality_name_en": "Shinjo-shi", "baseline_votes": 428.0, "target_votes": 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"prefecture_code": "06", "prefecture_name": "山形県", "prefecture_name_en": "Yamagata", "jis_code": "063410", "municipality_name": "大石田町", "municipality_name_en": "Oishida-machi", "baseline_votes": 86.0, "target_votes": 79.0, "votes_delta": -7.0, "votes_change_rate_pct": -8.139535, "baseline_vote_share_pct_muni": 2.504368, "target_vote_share_pct_muni": 2.407802, "vote_share_delta_pct_pt": -0.096566 } ] }