{"data":{"aliases":["Contra Costa"],"advisoryIndicators":[],"caveats":[],"confidence":{"level":"derived","label":"Derived from official rows","shortLabel":"Derived","description":"The value is reproducibly aggregated, normalized, or calculated from official published rows.","caveat":"Official California Secretary of State county presidential baselines used for historical context only. Individual rows carry the per-year Statement of Vote workbook URL. Official California Secretary of State Statement of Vote workbook normalized to county rows by scripts/normalize-ca-sov-workbooks.mjs."},"displayName":"Contra Costa County","equipment":[{"absenteeSystem":"Batch-Fed Optical Scanners","accessibleSystem":"Ballot Marking Devices for all voters","configurationSignals":["polling-place system reports multiple values: Hand marked paper ballots, BMDs for accessibility","accessible voting system differs from standard polling-place system","absentee system differs from standard polling-place system"],"electionYear":2024,"equipmentType":"Optical Scan","id":"cf34e32b-eb2f-4878-94cc-37d66863b475","jurisdictionCode":"CA-013","jurisdictionName":"Contra Costa County","jurisdictionTag":"county:06013","level":"county","metrics":{"caveat":"Verified Voting Verifier data is jurisdiction-level election-administration context. Most rows are counties, but some states report state-level rows and some county rows can summarize mixed tabulation, accessible-device, absentee, poll-book, or other configurations. Treat it as source-linked context, not proof every precinct in a county used one identical setup, and not a turnout or vote-result source.","sourceUrl":"https://verifiedvoting.org/verifier/#mode/navigate/map/voteEquip/mapType/ppEquip/year/2024/state/6","uniformityNote":"Verifier row is a county-level summary. polling-place system reports multiple values: Hand marked paper ballots, BMDs for accessibility; accessible voting system differs from standard polling-place system; absentee system differs from standard polling-place system. Do not infer every precinct or ballot mode used one identical setup.","sourceGranularity":"county","configurationSignals":["polling-place system reports multiple values: Hand marked paper ballots, BMDs for accessibility","accessible voting system differs from standard polling-place system","absentee system differs from standard polling-place system"],"uniformityWarningRequired":true},"paperRecord":"hand_marked_paper","pollingPlaces":147,"pollBookSystem":"Commercial Electronic Poll Book","precincts":926,"registeredVoters":732340,"sourceGranularity":"county","sourceId":"ca-2024-verified-voting-verifier-ca-2024-equipment","sourceUrl":"https://verifiedvoting.org/verifier/#mode/navigate/map/voteEquip/mapType/ppEquip/year/2024/state/6","standardSystem":"Hand marked paper ballots, BMDs for accessibility","state":"CA","systemName":"Dominion ImageCast X BMD +","tabulation":"Optical Scan","uniformityNote":"Verifier row is a county-level summary. polling-place system reports multiple values: Hand marked paper ballots, BMDs for accessibility; accessible voting system differs from standard polling-place system; absentee system differs from standard polling-place system. Do not infer every precinct or ballot mode used one identical setup.","uniformityWarningRequired":true,"usage":"county_context","vendor":"Dominion","confidence":{"level":"proxy","label":"Contextual proxy","shortLabel":"Proxy","description":"The value is contextual or supplemental and should not be treated as a silent replacement for an official certified total.","caveat":"Verifier row is a county-level summary. polling-place system reports multiple values: Hand marked paper ballots, BMDs for accessibility; accessible voting system differs from standard polling-place system; absentee system differs from standard polling-place system. Do not infer every precinct or ballot mode used one identical setup."}}],"fips":"06013","geographyLevel":"county","geometrySource":"ca-counties.geojson","history":[{"available":true,"demSharePct":68.49,"demVotes":319287,"leader":"Democratic","marginPct":43.62,"marginVotes":203331,"otherVotes":30932,"repSharePct":24.87,"repVotes":115956,"totalVotes":466175,"candidateLabels":{"dem":"Hillary Clinton","rep":"Donald Trump"},"caveats":["Official California Secretary of State county presidential baselines used for historical context only. Individual rows carry the per-year Statement of Vote workbook URL."],"confidence":{"level":"exact","label":"Exact reported geography","shortLabel":"Exact","description":"The published row maps directly to the canonical county or county-equivalent geography.","caveat":"Official California Secretary of State county presidential baselines used for historical context only. Individual rows carry the per-year Statement of Vote workbook URL."},"source":{"authority":"California Secretary of State","category":"Historical county presidential baseline rows","confidence":"Official California Secretary of State county presidential baselines used for historical context only. Individual rows carry the per-year Statement of Vote workbook URL.","id":"ca-2024-ca-historical-presidential-sov-county","sourceUrl":"https://elections.cdn.sos.ca.gov/sov/2016-general/sov/17-presidential-formatted.xls","status":"loaded","title":"Historical county presidential baseline rows"},"sourceLevel":"county","year":2016},{"available":true,"demSharePct":71.63,"demVotes":416386,"leader":"Democratic","marginPct":45.33,"marginVotes":263509,"otherVotes":12053,"repSharePct":26.3,"repVotes":152877,"totalVotes":581316,"candidateLabels":{"dem":"Joe Biden","rep":"Donald Trump"},"caveats":["Official California Secretary of State county presidential baselines used for historical context only. Individual rows carry the per-year Statement of Vote workbook URL."],"confidence":{"level":"exact","label":"Exact reported geography","shortLabel":"Exact","description":"The published row maps directly to the canonical county or county-equivalent geography.","caveat":"Official California Secretary of State county presidential baselines used for historical context only. Individual rows carry the per-year Statement of Vote workbook URL."},"source":{"authority":"California Secretary of State","category":"Historical county presidential baseline rows","confidence":"Official California Secretary of State county presidential baselines used for historical context only. Individual rows carry the per-year Statement of Vote workbook URL.","id":"ca-2024-ca-historical-presidential-sov-county","sourceUrl":"https://elections.cdn.sos.ca.gov/sov/2020-general/sov/18-presidential.xlsx","status":"loaded","title":"Historical county presidential baseline rows"},"sourceLevel":"county","year":2020},{"available":true,"demSharePct":67.3,"demVotes":356008,"leader":"Democratic","marginPct":37.94,"marginVotes":200700,"otherVotes":17671,"repSharePct":29.36,"repVotes":155308,"totalVotes":528987,"candidateLabels":{"dem":"Kamala Harris","rep":"Donald Trump"},"caveats":["Official California Secretary of State Statement of Vote workbook normalized to county rows by scripts/normalize-ca-sov-workbooks.mjs."],"confidence":{"level":"derived","label":"Derived from official rows","shortLabel":"Derived","description":"The value is reproducibly aggregated, normalized, or calculated from official published rows.","caveat":"Official California Secretary of State Statement of Vote workbook normalized to county rows by scripts/normalize-ca-sov-workbooks.mjs."},"source":{"authority":"California Secretary of State","category":"Official presidential county results","confidence":"Official California Secretary of State Statement of Vote workbook normalized to county rows by scripts/normalize-ca-sov-workbooks.mjs.","id":"ca-2024-ca-2024-general-president-sov","sourceUrl":"https://elections.cdn.sos.ca.gov/sov/2024-general/sov/16-president.xlsx","status":"loaded","title":"Official presidential county results"},"sourceLevel":"county","year":2024}],"jurisdictionTag":"county:06013","sources":[{"authority":"California Secretary of State","category":"Historical county presidential baseline rows","confidence":"Official California Secretary of State county presidential baselines used for historical context only. Individual rows carry the per-year Statement of Vote workbook URL.","id":"ca-2024-ca-historical-presidential-sov-county","sourceUrl":"https://elections.cdn.sos.ca.gov/sov/2020-general/sov/18-presidential.xlsx","status":"loaded","title":"Historical county presidential baseline rows"},{"authority":"California Secretary of State","category":"Official presidential county results","confidence":"Official California Secretary of State Statement of Vote workbook normalized to county rows by scripts/normalize-ca-sov-workbooks.mjs.","id":"ca-2024-ca-2024-general-president-sov","sourceUrl":"https://elections.cdn.sos.ca.gov/sov/2024-general/sov/16-president.xlsx","status":"loaded","title":"Official presidential county results"},{"authority":"California Secretary of State","category":"Official voter participation and registration county turnout rows","confidence":"Official California Secretary of State county participation table normalized by scripts/normalize-ca-turnout.mjs from the saved PDF artifact data/ca-2024-voter-participation-stats-by-county.pdf.","id":"ca-2024-ca-2024-general-voter-participation-sov","sourceUrl":"https://elections.cdn.sos.ca.gov/sov/2024-general/sov/03-voter-participation-stats-by-county.pdf","status":"loaded","title":"Official voter participation and registration county turnout rows"},{"authority":"Verified Voting","category":"equipment_context","confidence":"Verified Voting Verifier data is jurisdiction-level election-administration context. Most rows are counties, but some states report state-level rows and some county rows can summarize mixed tabulation, accessible-device, absentee, poll-book, or other configurations. Treat it as source-linked context, not proof every precinct in a county used one identical setup, and not a turnout or vote-result source.","id":"ca-2024-verified-voting-verifier-ca-2024-equipment","sourceUrl":"https://verifiedvoting.org/verifier/#mode/navigate/map/voteEquip/mapType/ppEquip/year/2024/state/6","status":"loaded","title":"Verified Voting Verifier CA 2024 equipment context"}],"state":"CA","stateName":"California","turnout":{"available":true,"ballotsCast":539219,"confidence":{"level":"derived","label":"Derived from official rows","shortLabel":"Derived","description":"The value is reproducibly aggregated, normalized, or calculated from official published rows.","caveat":"California SOS registered-voter totals from the 15-day Report of Registration; Same Day Voter Registration after the 15-day close is not included in registered-voter totals."},"denominatorNotes":["California SOS registered-voter totals from the 15-day Report of Registration; Same Day Voter Registration after the 15-day close is not included in registered-voter totals."],"level":"county","registeredVoters":722861,"rowCount":1,"source":{"authority":"California Secretary of State","category":"Official voter participation and registration county turnout rows","confidence":"Official California Secretary of State county participation table normalized by scripts/normalize-ca-turnout.mjs from the saved PDF artifact data/ca-2024-voter-participation-stats-by-county.pdf.","id":"ca-2024-ca-2024-general-voter-participation-sov","sourceUrl":"https://elections.cdn.sos.ca.gov/sov/2024-general/sov/03-voter-participation-stats-by-county.pdf","status":"loaded","title":"Official voter participation and registration county turnout rows"},"turnoutPct":74.6,"warningRequired":false,"year":2024},"voteMethods":[]},"meta":{"generatedAt":"2026-07-26T19:54:25.858Z","source":"database","releaseId":null,"schemaVersion":"1.0.0","caveat":"Advisory indicators are source-review prompts, not findings of fraud or misconduct.","contract":"county:<five-digit Census GEOID>","electionYears":[2016,2020,2024],"fips":"06013"}}