{ "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": "JCP", "party_label": "共産", "party_label_en": "Japanese Communist 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": { 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"prefecture_name": "山形県", "prefecture_name_en": "Yamagata", "jis_code": "064025", "municipality_name": "白鷹町", "municipality_name_en": "Shirataka-machi", "baseline_votes": 296.0, "target_votes": 284.0, "votes_delta": -12.0, "votes_change_rate_pct": -4.054054, "baseline_vote_share_pct_muni": 4.192041, "target_vote_share_pct_muni": 4.045584, "vote_share_delta_pct_pt": -0.146457 }, { "prefecture_code": "06", "prefecture_name": "山形県", "prefecture_name_en": "Yamagata", "jis_code": "062022", "municipality_name": "米沢市", "municipality_name_en": "Yonezawa-shi", "baseline_votes": 1555.098, "target_votes": 1399.0, "votes_delta": -156.098, "votes_change_rate_pct": -10.037824, "baseline_vote_share_pct_muni": 4.201491, "target_vote_share_pct_muni": 3.844674, "vote_share_delta_pct_pt": -0.356817 }, { "prefecture_code": "06", "prefecture_name": "山形県", "prefecture_name_en": "Yamagata", "jis_code": "064262", "municipality_name": "三川町", "municipality_name_en": "Mikawa-machi", "baseline_votes": 219.0, 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