Researchers / Alan Dunst / Statewide county data
Data · Data as of July 2, 2026
Statewide county data
The duplicate ratio is the number of identified potential duplicates in a county divided by its registered voters. Lower is better. Counts are as reported by the author.
Counties by duplicate-ratio tier
54below 0.10%
210.10% to 0.19%
40.20% to 0.29%
30.30% to 0.39%
10.40% to 0.49%
Computed from the table below using the report's tier thresholds. The report's Appendix A lists the same tiers by county name.
All 83 counties, sorted by duplicate ratio (as of July 2, 2026)
Download CSV| County | Current potential duplicates | Registered voters | Duplicate ratio | Share of statewide duplicates | Share of statewide voters | Variance from expected |
|---|---|---|---|---|---|---|
| Wayne | 6,184 | 1,455,496 | 0.42% | 52.85% | 17.46% | +35.39% |
| Menominee | 79 | 21,248 | 0.37% | 0.68% | 0.25% | +0.42% |
| Schoolcraft | 26 | 7,573 | 0.34% | 0.22% | 0.09% | +0.13% |
| Gogebic | 44 | 13,460 | 0.33% | 0.38% | 0.16% | +0.21% |
| Huron | 63 | 26,298 | 0.24% | 0.54% | 0.32% | +0.22% |
| Baraga | 16 | 6,851 | 0.23% | 0.14% | 0.08% | +0.05% |
| Tuscola | 94 | 43,439 | 0.22% | 0.80% | 0.52% | +0.28% |
| Kalamazoo | 444 | 212,061 | 0.21% | 3.79% | 2.54% | +1.25% |
| St. Joseph | 90 | 48,985 | 0.18% | 0.77% | 0.59% | +0.18% |
| Ionia | 89 | 50,244 | 0.18% | 0.76% | 0.60% | +0.16% |
| Otsego | 41 | 23,436 | 0.17% | 0.35% | 0.28% | +0.07% |
| Mackinac | 18 | 10,501 | 0.17% | 0.15% | 0.13% | +0.03% |
| Kalkaska | 28 | 17,525 | 0.16% | 0.24% | 0.21% | +0.03% |
| Sanilac | 50 | 32,601 | 0.15% | 0.43% | 0.39% | +0.04% |
| Presque Isle | 18 | 12,167 | 0.15% | 0.15% | 0.15% | +0.01% |
| Branch | 50 | 34,980 | 0.14% | 0.43% | 0.42% | +0.01% |
| Muskegon | 192 | 148,117 | 0.13% | 1.64% | 1.78% | -0.14% |
| Cass | 60 | 46,111 | 0.13% | 0.51% | 0.55% | -0.04% |
| Mecosta | 44 | 32,633 | 0.13% | 0.38% | 0.39% | -0.02% |
| Alger | 10 | 7,513 | 0.13% | 0.09% | 0.09% | +0.00% |
| Montcalm | 64 | 52,530 | 0.12% | 0.55% | 0.63% | -0.08% |
| Lenawee | 92 | 80,644 | 0.11% | 0.79% | 0.97% | -0.18% |
| Van Buren | 73 | 63,489 | 0.11% | 0.62% | 0.76% | -0.14% |
| Gratiot | 34 | 29,998 | 0.11% | 0.29% | 0.36% | -0.07% |
| Oceana | 24 | 22,686 | 0.11% | 0.21% | 0.27% | -0.07% |
| Washtenaw | 309 | 305,094 | 0.10% | 2.64% | 3.66% | -1.02% |
| Iosco | 24 | 23,174 | 0.10% | 0.21% | 0.28% | -0.07% |
| Charlevoix | 24 | 23,891 | 0.10% | 0.21% | 0.29% | -0.08% |
| Antrim | 22 | 23,059 | 0.10% | 0.19% | 0.28% | -0.09% |
| Oscoda | 8 | 7,843 | 0.10% | 0.07% | 0.09% | -0.03% |
| Oakland | 928 | 1,045,630 | 0.09% | 7.93% | 12.54% | -4.61% |
| Ingham | 192 | 214,487 | 0.09% | 1.64% | 2.57% | -0.93% |
| Berrien | 124 | 134,094 | 0.09% | 1.06% | 1.61% | -0.55% |
| Lapeer | 68 | 75,536 | 0.09% | 0.58% | 0.91% | -0.32% |
| Marquette | 48 | 55,567 | 0.09% | 0.41% | 0.67% | -0.26% |
| Newaygo | 39 | 43,234 | 0.09% | 0.33% | 0.52% | -0.19% |
| Wexford | 26 | 29,360 | 0.09% | 0.22% | 0.35% | -0.13% |
| Chippewa | 24 | 28,140 | 0.09% | 0.21% | 0.34% | -0.13% |
| Roscommon | 20 | 23,289 | 0.09% | 0.17% | 0.28% | -0.11% |
| Benzie | 16 | 17,100 | 0.09% | 0.14% | 0.21% | -0.07% |
| Crawford | 12 | 12,886 | 0.09% | 0.10% | 0.15% | -0.05% |
| Missaukee | 12 | 13,034 | 0.09% | 0.10% | 0.16% | -0.05% |
| Jackson | 108 | 127,847 | 0.08% | 0.92% | 1.53% | -0.61% |
| Monroe | 108 | 134,218 | 0.08% | 0.92% | 1.61% | -0.69% |
| Emmet | 24 | 31,175 | 0.08% | 0.21% | 0.37% | -0.17% |
| Gladwin | 18 | 22,842 | 0.08% | 0.15% | 0.27% | -0.12% |
| Bay | 58 | 87,049 | 0.07% | 0.50% | 1.04% | -0.55% |
| Midland | 46 | 70,342 | 0.07% | 0.39% | 0.84% | -0.45% |
| Shiawassee | 42 | 57,746 | 0.07% | 0.36% | 0.69% | -0.33% |
| Barry | 36 | 53,175 | 0.07% | 0.31% | 0.64% | -0.33% |
| Manistee | 16 | 21,917 | 0.07% | 0.14% | 0.26% | -0.13% |
| Leelanau | 16 | 21,950 | 0.07% | 0.14% | 0.26% | -0.13% |
| Cheboygan | 16 | 23,755 | 0.07% | 0.14% | 0.28% | -0.15% |
| Alpena | 16 | 24,479 | 0.07% | 0.14% | 0.29% | -0.16% |
| Osceola | 14 | 19,551 | 0.07% | 0.12% | 0.23% | -0.11% |
| Ontonagon | 4 | 5,631 | 0.07% | 0.03% | 0.07% | -0.03% |
| Genesee | 198 | 348,467 | 0.06% | 1.69% | 4.18% | -2.49% |
| Saginaw | 98 | 157,041 | 0.06% | 0.84% | 1.88% | -1.05% |
| St. Clair | 80 | 138,498 | 0.06% | 0.68% | 1.66% | -0.98% |
| Isabella | 30 | 47,847 | 0.06% | 0.26% | 0.57% | -0.32% |
| Hillsdale | 24 | 37,836 | 0.06% | 0.21% | 0.45% | -0.25% |
| Montmorency | 6 | 9,308 | 0.06% | 0.05% | 0.11% | -0.06% |
| Macomb | 369 | 727,749 | 0.05% | 3.15% | 8.73% | -5.58% |
| Ottawa | 129 | 237,377 | 0.05% | 1.10% | 2.85% | -1.75% |
| Calhoun | 58 | 112,078 | 0.05% | 0.50% | 1.34% | -0.85% |
| Allegan | 46 | 101,985 | 0.05% | 0.39% | 1.22% | -0.83% |
| Eaton | 42 | 89,711 | 0.05% | 0.36% | 1.08% | -0.72% |
| Grand Traverse | 38 | 84,262 | 0.05% | 0.32% | 1.01% | -0.69% |
| Clinton | 32 | 64,772 | 0.05% | 0.27% | 0.78% | -0.50% |
| Delta | 16 | 32,664 | 0.05% | 0.14% | 0.39% | -0.26% |
| Dickinson | 12 | 22,924 | 0.05% | 0.10% | 0.27% | -0.17% |
| Ogemaw | 10 | 18,946 | 0.05% | 0.09% | 0.23% | -0.14% |
| Houghton | 12 | 27,401 | 0.04% | 0.10% | 0.33% | -0.23% |
| Clare | 10 | 27,010 | 0.04% | 0.09% | 0.32% | -0.24% |
| Arenac | 6 | 13,441 | 0.04% | 0.05% | 0.16% | -0.11% |
| Iron | 4 | 10,921 | 0.04% | 0.03% | 0.13% | -0.10% |
| Kent | 93 | 526,540 | 0.02% | 0.79% | 6.32% | -5.52% |
| Livingston | 36 | 168,123 | 0.02% | 0.31% | 2.02% | -1.71% |
| Mason | 4 | 25,597 | 0.02% | 0.03% | 0.31% | -0.27% |
| Alcona | 2 | 10,483 | 0.02% | 0.02% | 0.13% | -0.11% |
| Lake | 2 | 11,094 | 0.02% | 0.02% | 0.13% | -0.12% |
| Keweenaw | 0 | 2,123 | 0.00% | 0.00% | 0.03% | -0.03% |
| Luce | 0 | 4,689 | 0.00% | 0.00% | 0.06% | -0.06% |
Source: Appendix C of the author's Michigan Duplicate Voter Registration Report, data as of July 2, 2026. The author defines the ratio as current potential duplicates divided by population.