| County | Vendor | Equipment | In-precinct Counting | |
| ADAMS | Election Systems and Software | Optical Scan M100 | Yes | |
| |
| ALEXANDER | Election Systems and Software | Punch card | No | |
| |
| BOND | Fidlar - GBS | Punch card | No | |
| |
| BOONE | Fidlar - GBS | Accu-vote Optical Scan | Yes | |
| |
| BROWN | Election Systems and Software | Optical Scan M100 | Yes | |
| |
| BUREAU | Fidlar - GBS | Accu-vote Optical Scan | Yes | |
| |
| *CALHOUN | Election Systems and Software | Punch card | No | |
| |
| CARROLL | Fidlar - GBS | Accu-vote Optical Scan | Yes | |
| |
| CASS | Fidlar - GBS | Punch card | No | |
| |
| CHAMPAIGN | Fidlar - GBS | Punch card | No | |
| |
| CHRISTIAN | Fidlar - GBS | Punch card | No | |
| |
| CLARK | Fidlar - GBS | Punch card | No | |
| |
| CLAY | Fidlar - GBS | Punch card | No | |
| |
| CLINTON | Fidlar - GBS | Accu-vote Optical Scan | Yes | |
| |
| COLES | Fidlar - GBS | Accu-vote Optical Scan | Yes | |
| |
| COOK | Election Systems and Software | PBC 2100 | Yes | |
| |
| CRAWFORD | Fidlar - GBS | Accu-vote Optical Scan | Yes | |
| |
| CUMBERLAND | Fidlar - GBS | Accu-vote Optical Scan | Yes | |
| |
| DEKALB | Fidlar - GBS | Accu-vote Optical Scan | Yes | |
| |
| DEWITT | Fidlar - GBS | Accu-vote Optical Scan | Yes | |
| |
| DOUGLAS | Fidlar - GBS | Accu-vote Optical Scan | Yes | |
| |
| DUPAGE | Fidlar - GBS | Accu-vote Optical Scan | Yes | |
| |
| EDGAR | Fidlar - GBS | Punch card | No | |
| |
| *EDWARDS | Fidlar - GBS | Punch card | No | |
| |
| EFFINGHAM | Election Systems and Software | Punch card | No | |
| |
| FAYETTE | Fidlar - GBS | Punch card | No | |
| |
| FORD | Fidlar - GBS | Accu-vote Optical Scan | Yes | |
| |
| FRANKLIN | Fidlar - GBS | Accu-vote Optical Scan | Yes | |
| |
| FULTON | Fidlar - GBS | Accu-vote Optical Scan | Yes | |
| |
| GALLATIN | Election Systems and Software | Punch card | No | |
| |
| GREENE | Fidlar - GBS | Punch card | No | |
| |
| GRUNDY | Fidlar - GBS | Accu-vote Optical Scan | Yes | |
| |
| HAMILTON | Election Systems and Software | Marksense Optech IV-C | No | |
| |
| HANCOCK | Election Systems and Software | Punch card | No | |
| |
| *HARDIN | Fidlar - GBS | Punch card | No | |
| |
| HENDERSON | Election Systems and Software | Optical Scan M100 | Yes | |
| |
| HENRY | Election Systems and Software | Optical Scan M100 | Yes | |
| |
| IROQUOIS | Fidlar - GBS | Accu-vote Optical Scan | Yes | |
| |
| JACKSON | Fidlar - GBS | Punch card | No | |
| |
| JASPER | Fidlar - GBS | Accu-vote Optical Scan | Yes | |
| |
| JEFFERSON | Election Systems and Software | Optical Scan M100 | Yes | |
| |
| JERSEY | Election Systems and Software | Punch card | No | |
| |
| JODAVIESS | Election Systems and Software | Punch card | No | |
| |
| *JOHNSON | Fidlar - GBS | Accu-vote Optical Scan | Yes | |
| |
| KANE | Fidlar - GBS | Punch Card | No | |
| |
| KANKAKEE | Fidlar - GBS | Accu-vote Optical Scan | Yes | |
| |
| KENDALL | Fidlar - GBS | Punch card | No | |
| |
| KNOX | Fidlar - GBS | Accu-vote Optical Scan | Yes | |
| |
| LAKE | Election Systems and Software | Optical Scan M100 | Yes | |
| |
| LASALLE | Election Systems and Software | Optical Scan M100 | Yes | |
| |
| LAWRENCE | Election Systems and Software | Optical Scan M100 | Yes | |
| |
| LEE | Fidlar - GBS | Accu-vote Optical Scan | Yes | |
| |
| LIVINGSTON | Fidlar - GBS | Accu-vote Optical Scan | Yes | |
| |
| LOGAN | Election Systems and Software | Optical Scan M100 | Yes | |
| |
| MACON | Fidlar - GBS | Accu-vote Optical Scan | Yes | |
| |
| MACOUPIN | Fidlar - GBS | Accu-vote Optical Scan | Yes | |
| |
| MADISON | Election Systems and Software | Optical Scan M100 | Yes | |
| |
| MARION | Fidlar - GBS | Accu-vote Optical Scan | Yes | |
| |
| MARSHALL | Election Systems and Software | Optical Scan M100 | Yes | |
| |
| MASON | Fidlar - GBS | Punch card | No | |
| |
| *MASSAC | Election Systems and Software | Optical Scan M100 | Yes | |
| |
| MCDONOUGH | Fidlar - GBS | Accu-vote Optical Scan | Yes | |
| |
| MCHENRY | Fidlar - GBS | Accu-vote Optical Scan | Yes | |
| |
| MCLEAN | Fidlar - GBS | Accu-vote Optical Scan | Yes | |
| |
| *MENARD | Election Systems and Software | Optical Scan M100 | Yes | |
| |
| MERCER | Election Systems and Software | Punch card | No | |
| |
| *MONROE | Fidlar - GBS | Punch card | No | |
| |
| MONTGOMERY | Election Systems and Software | Punch card | No | |
| |
| *MORGAN | Fidlar - GBS | Punch card | No | |
| |
| MOULTRIE | Fidlar - GBS | Accu-vote Optical Scan | Yes | |
| |
| OGLE | Election Systems and Software | Optical Scan M100 | Yes | |
| |
| PEORIA | Fidlar - GBS | Accu-vote Optical Scan | Yes | |
| |
| *PERRY | Fidlar - GBS | Accu-vote Optical Scan | Yes | |
| |
| PIATT | Election Systems and Software | Punch card | No | |
| |
| PIKE | Fidlar - GBS | Punch card | No | |
| |
| *POPE | Fidlar - GBS | Accu-vote Optical Scan | Yes | |
| |
| *PULASKI | Fidlar - GBS | Punch card | No | |
| |
| PUTNAM | Fidlar - GBS | Punch card | No | |
| |
| *RANDOLPH | Fidlar - GBS | Punch card | No | |
| |
| RICHLAND | Fidlar - GBS | Punch card | No | |
| |
| ROCK ISLAND | Election Systems and Software | Optical Scan M100 | Yes | |
| |
| SALINE | Election Systems and Software | Optical Scan M100 | Yes | |
| |
| SANGAMON | I.L.Richardson and LRS | Punch card | No | |
| |
| SCHUYLER | Fidlar - GBS | Accu-vote Optical Scan | Yes | |
| |
| *SCOTT | Fidlar - GBS | Accu-vote Optical Scan | Yes | |
| |
| SHELBY | Fidlar - GBS | Accu-vote Optical Scan | Yes | |
| |
| STARK | Election Systems and Software | Punch card | No | |
| |
| ST. CLAIR | Fidlar - GBS | Accu-vote Optical Scan | Yes | |
| |
| STEPHENSON | Election Systems and Software | Punch card | No | |
| |
| TAZEWELL | Fidlar - GBS | Punch card | No | |
| |
| *UNION | Fidlar - GBS | Accu-vote Optical Scan | Yes | |
| |
| VERMILION | Fidlar - GBS | Accu-vote Optical Scan | Yes | |
| |
| *WABASH | Fidlar - GBS | Punch card | No | |
| |
| WARREN | Fidlar - GBS | Accu-vote Optical Scan | Yes | |
| |
| WASHINGTON | Fidlar - GBS | Accu-vote Optical Scan | Yes | |
| |
| WAYNE | Fidlar - GBS | Accu-vote Optical Scan | Yes | |
| |
| WHITE | Fidlar - GBS | Accu-vote Optical Scan | Yes | |
| |
| WHITESIDE | Fidlar - GBS | Punch card | No | |
| |
| WILL | Election Systems and Software | Optical Scan M100 | Yes | |
| |
| *WILLIAMSON | Election Systems and Software | Optical Scan M100 | Yes | |
| |
| WINNEBAGO | Fidlar - GBS | Accu-vote Optical Scan | Yes | |
| |
| WOODFORD | Election Systems and Software | Optical Scan M100 | Yes | |
| |
| AURORA | Fidlar - GBS | Punch card | No | |
| |
| BLOOMINGTON | Election Systems and Software | Optical Scan M100 | Yes | |
| |
| CHICAGO | Election Systems and Software | PBC 2100 | Yes | |
| |
| DANVILLE | Election Systems and Software | Optical Scan M100 | Yes | |
| |
| E. ST. LOUIS | Election Systems and Software | Marksense Optech IV-C | No | |
| |
| GALESBURG | Election Systems and Software | Marksense Optech III PE | Yes | |
| |
| PEORIA BEC | Election Systems and Software | Marksense Optech IV-C | No | |
| |
| ROCKFORD | Election Systems and Software | Marksense Optech III PE | Yes | |