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2026 Compare Cities Politics & Voting:
Oak Brook, IL vs San Jose, CA

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Highlights
- Registered voters in San Jose are 37.0% 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, ILSan Jose, CAUnited States
 Democrat  Unlock72.7%48.0%
 Republican38.6%  Unlock45.9%
 Independent Other  Unlock6.7%6.0%
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Learn More About Oak Brook, Illinois
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