A recent analysis by Local Government Information Services, which owns this publication, found almost 50,000 duplicate voter registration records, representing Illinois residents who are registered multiple times.
The data, which was pulled from the the Illinois State Board of Elections voter registration file, shows that there were 49,772 records which showed voters with the same first name, middle name, last name and birth date, and registrations at two different addresses or multiple registrations at the same address, with two unique state-issued voter identification numbers.
The total represents 24,843 unique voters: one person registered four times, 84 people registered three times and 24,758 registered twice.
Voters with multiple registrations could vote multiple times.
You can find the number of duplicate records for the North Cook area, broken down by city, in the table below:
| City | Duplicated Registration Records |
| Algonquin | 163 |
| Arlington Heights | 184 |
| Barrington | 57 |
| Barrington Hills | 9 |
| Bartlett | 56 |
| Batavia | 37 |
| Belvidere | 74 |
| Bloomington | 407 |
| Bridgeport | 10 |
| Broughton | 2 |
| Browns | 2 |
| Buffalo Grove | 33 |
| Cahokia | 17 |
| Champaign | 903 |
| Charleston | 126 |
| Chatham | 7 |
| Chicago | 16,950 |
| Cisco | 3 |
| Colfax | 4 |
| Crystal Lake | 372 |
| Danville | 477 |
| Darien | 16 |
| Deerfield | 9 |
| De Kalb | 273 |
| Dennison | 1 |
| Des Plaines | 238 |
| Dieterich | 2 |
| Dundee | 11 |
| Edwardsville | 112 |
| Effingham | 41 |
| Elgin | 129 |
| Elk Grove Village | 73 |
| Evanston | 512 |
| Evansville | 1 |
| Fox River Grove | 32 |
| Freeport | 157 |
| Galva | 1 |
| Geneva | 44 |
| Glen Carbon | 35 |
| Glen Ellyn | 24 |
| Glencoe | 28 |
| Glenview | 155 |
| Golf | 1 |
| Greenview | 1 |
| Hanover Park | 55 |
| Harwood Heights | 42 |
| Hawthorn Woods | 2 |
| Heyworth | 13 |
| Highland Park | 5 |
| Hoffman Estates | 115 |
| Hoopeston | 42 |
| Huntley | 88 |
| Inverness | 21 |
| Johnsburg | 23 |
| Kenilworth | 12 |
| Lake Barrington | 2 |
| Lake Forest | 3 |
| Lake in the Hills | 150 |
| Lawrenceville | 22 |
| Lemont | 64 |
| Libertyville | 9 |
| Lincolnwood | 52 |
| Marion | 102 |
| Mattoon | 57 |
| Morton | 42 |
| Morton Grove | 65 |
| Mount Prospect | 130 |
| Naperville | 275 |
| Niles | 111 |
| Normal | 366 |
| Norridge | 64 |
| Northbrook | 116 |
| Northfield | 19 |
| Oakwood | 21 |
| Palatine | 197 |
| Palos Hills | 72 |
| Park Ridge | 176 |
| Pekin | 56 |
| Pingree Grove | 8 |
| Pleasant Plains | 1 |
| Prospect Heights | 23 |
| Quincy | 394 |
| Richmond | 11 |
| Rochelle | 40 |
| Rolling Meadows | 56 |
| Rosamond | 1 |
| Roselle | 26 |
| Rosemont | 10 |
| Rushville | 18 |
| Schaumburg | 202 |
| Skokie | 246 |
| South Barrington | 5 |
| South Elgin | 23 |
| Springfield | 54 |
| St. Charles | 71 |
| Steeleville | 7 |
| Steger | 64 |
| Sterling | 67 |
| Streamwood | 87 |
| Sublette | 1 |
| Sumner | 12 |
| Sycamore | 75 |
| Tiskilwa | 1 |
| Urbana | 553 |
| Vandalia | 9 |
| Vernon Hills | 10 |
| Walnut | 5 |
| Waterloo | 19 |
| Wheeling | 56 |
| White Hall | 9 |
| Wilmette | 80 |
| Windsor | 15 |
| Winnetka | 49 |
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