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2026 Compare Cities Politics & Voting:
Diamond Bar, CA vs Portland, OR

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Highlights
- Registered voters in Portland are 2.2% 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, CAPortland, ORUnited States
 Democrat  Unlock73.3%48.0%
 Republican22.4%  Unlock45.9%
 Independent Other  Unlock9.7%6.0%
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Learn More About Diamond Bar, California
Overview
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Learn More About Portland, Oregon
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