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.

St. Clair County

county · 17163
This county — demographics, elections & registration at a glance full page ↗
Partisan lean · 215 precincts · IL D+8.7
Dem 68325 (53.3%) Rep 57150 (44.6%) Total 128090

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
Caseyville 12 R+6.1 945 1072 2079
Shiloh Valley 5 D+5.1 812 731 1580
Mascoutah 3 R+31.7 503 991 1539
Caseyville 18 D+9.9 816 664 1532
Stookey 1 R+36.6 404 886 1317
Caseyville 26 D+31.4 848 438 1304
Mascoutah 2 R+18.2 513 749 1294
Lebanon 1 R+5.7 555 625 1237
Belleville 26 D+24.6 742 440 1228
Millstadt 2 R+38.8 362 833 1214
Caseyville 2 D+14.3 669 498 1196
Ofallon 8 R+7.6 536 627 1195
Shiloh Valley 1 R+7.0 522 603 1158
St Clair 25 D+34.6 759 364 1143
Belleville 35 R+23.2 427 692 1141
Caseyville 5 R+5.8 526 592 1139
Ofallon 16 R+15.1 473 645 1137
St Clair 23 D+18.3 654 448 1124
St Clair 15 R+4.5 516 566 1108
Ofallon 12 R+4.7 518 570 1106
Ofallon 15 R+12.5 459 594 1078
Belleville 22 D+19.9 629 417 1067
Prairie Du Long 2 R+48.1 271 783 1065
Smithton 1 R+31.5 336 653 1007
Freeburg 1 R+42.2 282 703 998

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

Machine-readable: county-rollup?state_fips=17