{"data":{"id":"2026-07-11-national-county-v1","title":"National county presidential comparison release","publishedAt":"2026-07-11T00:00:00.000Z","status":"current","electionYears":[2016,2020,2024],"geographyContract":"county:<five-digit Census GEOID>","geographyVintage":"2024 Census county and county-equivalent inventory","geographyVintageYear":2024,"historicalGeographyPolicy":"2016 and 2020 rows resolve to the current canonical county-equivalent inventory. Connecticut official town rows are reproducibly aggregated to the nine planning-region county equivalents adopted by the Census Bureau in 2022; those derived current-geography rows are not historical county reporting units.","dataSha256":"b068940760625cd005ba6ecd404cea5012ee1b172e9f57748bfd80a499876d97","archivePath":"/data/releases/2026-07-11-national-county-v1.zip","archiveSha256":"81d90d478272f0550590d60f22d4fc71f983cb1e247c4a8e1ce6d147e7b058a0","coverage":{"registryCountyEquivalents":3144,"matchedCountyRowsByYear":{"2016":3114,"2020":3114,"2024":3114},"unavailableCountyEquivalents":30,"unavailableStates":["AK"],"intentionalNonGeographicRows":{"2016":2,"2020":2,"2024":0}},"comparisonSummary":{"2020-2024":{"redToBlue":0,"blueToRed":87,"noFlip":3027,"matched":3114}},"changes":["Completed canonical FIPS joins for every available county and county-equivalent presidential row in 2016, 2020, and 2024.","Added permanent county profiles, national comparison APIs, confidence classifications, and a reproducible bulk release bundle.","Preserved Alaska as source-unavailable county geography rather than manufacturing county totals from non-comparable reporting units."],"knownLimitations":["Alaska reports election results through election districts and precinct/reporting units that do not provide a reviewed county-equivalent crosswalk for these years; its 30 Census county equivalents remain unavailable.","Maine UOCAVA and Rhode Island Federal Precincts are intentional non-geographic historical rows and are excluded from county comparisons.","Connecticut 2016 and 2020 values are derived current-geography aggregates from official town rows to the nine planning regions adopted as Census county equivalents in 2022; they are not totals reported by those planning regions in those elections.","Turnout, equipment, vote-method, advisory, and administrative context have different reporting grains and should not be assumed to cover every county."],"sourceArtifacts":["data/canonical-jurisdictions.json","data/jurisdiction-tag-coverage-waves.json","data/jurisdiction-tag-coverage-2016-waves.json","data/native-import-source-packages.json","data/source-acquisition-tiers.json","data/county-historical-aliases.json"]},"meta":{"generatedAt":"2026-07-26T17:07:29.290Z","source":"database","releaseId":"2026-07-11-national-county-v1","schemaVersion":"1.0.0","apiSchemaVersion":"1.0.0","releaseCatalog":"/api/releases","openApi":"/api/openapi"}}