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2025 Compare Cities Politics & Voting:
Diamond Bar, CA vs Foster City, CA

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Highlights
- Registered voters in Foster City are 5.4% more likely to be registered as Democrats than registered voters in Diamond Bar.
- Registered voters in Diamond Bar, are 33.1% more likely to be registered as Democrats, than in the rest of the United States.
 Diamond Bar, CAFoster City, CAUnited States
 Democrat  Unlock75.7%48.0%
 Republican22.4%  Unlock45.9%
 Independent Other  Unlock5.9%6.0%
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Learn More About Diamond Bar, California
Overview
Cost of Living
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Crime
Climate
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Voting
Learn More About Foster City, California
Overview
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Crime
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Economy
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Voting
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