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Three new source datasets from Atlas, committed as-is before any build: fec_candidates.jsonl 2,494 2026 federal candidates (officeholders.fec_data) acs_county.jsonl 3,231 Census ACS 2023 by county (~100 dup keys to dedupe) acs_cd.jsonl 363 Census ACS 2023 by congressional district A new axis for the mirror: who is running (candidates) and the demographics of each place (ACS). Keyed on fec_id / state+district / county_fips — no person links yet. Raw first; the build into Candidate and Jurisdiction entities follows. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>