elect.info
DATA COVERAGE not externally verified tier raw_mirror vintage 2026-08-27 coverage 1980-2024 · 2026 Midterms in flight! money live · figures computing (best estimates)
Dollar figures are still computing and reflect best estimates while the corrected-financial reconciliation completes. Relationships, counts, and dates are final.

McHenry County

county · 17111
This county — demographics, elections & registration at a glance full page ↗
Partisan lean · 212 precincts · IL R+2.5
Dem 78154 (47.7%) Rep 82260 (50.2%) Total 163874

RDH precinct returns aggregated to county (spatial assignment) · (Dem−Rep)÷total · 2020 presidential · counts, not dollars.

↑ IL state page County map See precincts on the map

Precincts

top 25 by turnout
PrecinctLeanDemRepTotal
Grafton 4 R+7.8 878 1029 1946
Grafton 16 D+6.2 945 832 1814
Nunda 19 R+2.1 810 845 1678
Grafton 8 D+1.9 832 800 1664
Riley 1 R+25.5 586 999 1617
Grafton 20 R+0.3 717 721 1467
Dorr 10 D+3.6 712 661 1403
McHenry 11 R+14.8 581 787 1390
Nunda 15 D+12.7 736 568 1324
Greenwood 2 D+26.0 823 479 1321
Richmond 1 R+13.2 549 719 1284
Grafton 21 R+6.7 559 641 1225
Dorr 11 R+7.1 547 634 1216
Grafton 18 D+2.7 607 574 1204
Dorr 9 D+14.6 664 491 1184
Richmond 2 R+23.5 438 713 1168
McHenry 34 R+13.5 492 648 1155
Grafton 12 D+6.0 592 523 1142
Grafton 13 R+0.2 552 554 1128
Grafton 25 D+2.2 559 535 1113
Grafton 17 R+11.9 482 615 1113
Richmond 4 R+31.8 373 727 1112
Marengo 4 R+22.9 412 667 1111
Dunham 1 R+8.5 492 586 1110
Algonquin 68 R+2.6 524 553 1094

Each precinct links to its own page · click a shape on the precinct map to zoom in.

Machine-readable: county-rollup?state_fips=17