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2025 Compare Cities Politics & Voting:
Napa, CA vs Castro Valley, CA

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Highlights
- Registered voters in Castro Valley are 22.2% more likely to be registered as Democrats than registered voters in Napa.
- Registered voters in Napa, are 24.8% more likely to be registered as Democrats, than in the rest of the United States.
 Napa, CACastro Valley, CAUnited States
 Democrat  Unlock78.1%48.0%
 Republican28.4%  Unlock45.9%
 Independent Other  Unlock7.4%6.0%
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Learn More About Napa, California
Overview
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Voting
Learn More About Castro Valley, California
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