2025 Compare Cities Politics & Voting:
Oak Brook, IL vs Sun Prairie, WI

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Highlights
- Registered voters in Sun Prairie are 32.6% more likely to be registered as Democrats than registered voters in Oak Brook.
- Registered voters in Oak Brook, are 9.5% more likely to be registered as Democrats, than in the rest of the United States.
 Oak Brook, ILSun Prairie, WIUnited States
 Democrat  Unlock70.4%48.0%
 Republican38.6%  Unlock45.9%
 Independent Other  Unlock6.6%6.0%
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