A recent analysis by Local Government Information Services (LGIS), 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 two times.
Winnebago County had 915 duplicate records, with 697 coming from Rockford. Boone County had 128 total duplicate records.
Voters with multiple registrations can vote multiple times.
You can find the number of duplicate records in Winnebago County, broken down by city, in the table below:
| City | Duplicated Registration Records |
| Rockford | 967 |
| Loves Park | 68 |
| Machesney Park | 61 |
| Roscoe | 29 |
| Rockton | 14 |
| South Beloit | 13 |
| Cherry Valley | 12 |
| Winnebago | 12 |
| Stillman Valley | 8 |
| Caledonia | 6 |
| Durand | 3 |
| Total (Winnebago County) | 915 |
You can find the number of duplicate records in Boone County, broken down by city, in the table below:
| City | Duplicated Registration Records |
| Belvidere | 74 |
| Poplar Grove | 38 |
| Capron | 4 |
| Garden Prairie | 3 |
| Total (Boone County) | 128 |
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