Illinois · county
FIPS 17111county:17111DerivedAlso indexed as: McHenry
A permanent, source-linked view of the county's 2016, 2020, and 2024 presidential history, turnout, election-administration context, and non-conclusive review signals.
Presidential results
| Year | Democratic | Republican | Other | Total | Winner / margin | Confidence | Source |
|---|---|---|---|---|---|---|---|
| 2016 | 60,803Hillary Clinton · 42.73% | 71,612Donald Trump · 50.33% | 9,875 | 142,290 | Republican +10,809 (7.60%) | Exact | Normalized official 2016 and 2020 county presidential historical baselines |
| 2020 | 78,154Joe Biden · 47.69% | 82,260Donald Trump · 50.20% | 3,465 | 163,879 | Republican +4,106 (2.51%) | Exact | Normalized official 2016 and 2020 county presidential historical baselines |
| 2024 | 75,370Kamala Harris · 46.22% | 83,933Donald Trump · 51.47% | 3,779 | 163,082 | Republican +8,563 (5.25%) | Derived | Official precinct result CSVs by office |
“Other” includes all other loaded presidential candidates and write-ins. Margin is the absolute gap between the Democratic and Republican vote buckets, divided by all loaded presidential votes.
Participation
EAC-reported registered-voter denominator
EAC fallback turnout rowsAdministration context
No county-tagged vote-method rows are available.
Administration context
Equipment metadata is jurisdiction context only. It is not a vote or turnout row, does not prove or disprove an advisory signal, and does not guarantee every precinct or ballot mode used one identical setup.
| Vendor | System | Type / use | Paper record | Tabulation | Confidence | Source |
|---|---|---|---|---|---|---|
| ES&S | ES&S ExpressVote + | Optical Scan · county_context | hand_marked_paper | Optical Scan | Proxy | Source |
Review context
These calculated indicators are prompts for checking source data, reporting grain, denominators, and local context. They are not evidence or findings of fraud, misconduct, or an incorrect election outcome.
Vote-share correlation crossed threshold: Trump r=0.665, Harris r=0.726.
Bigger local reporting-unit vote totals move with candidate vote share strongly enough to pass the native review threshold. This is an advisory review flag, not proof of tampering.
Traceability
Geometry registry artifact: il-counties.geojson
Illinois State Board of Elections
Exactly 102 county rows per year with canonical county:<GEOID> tags. All candidate votes are retained; non-Democratic/non-Republican and write-in candidate rows are included in other_votes.Open sourceIllinois State Board of Elections
Official Illinois State Board of Elections CSV exports. Presidential rows are aggregated from Illinois election jurisdictions to Census counties for certified county results; separate city election authorities are rolled into their parent counties. Advisory review rows join President to U.S. House only where the same source jurisdiction/precinct key is unambiguous and the House race has both Democratic and Republican candidate votes.Open sourceU.S. Election Assistance Commission
National EAC fallback turnout rows. Prefer state election office denominator artifacts when available; keep fallback caveats visible in the app.Open sourceVerified Voting
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.Open source