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MERCER ISLAND VS.
ROCKVILLE
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2025 Compare Cities Politics & Voting:
Mercer Island, WA vs Rockville, MD
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Highlights
- Registered voters in Rockville are 7.0% more likely to be registered as Democrats than registered voters in Mercer Island.
- Registered voters in Mercer Island, are 31.2% more likely to be registered as Democrats, than in the rest of the United States.
Mercer Island, WA
Rockville, MD
United States
Democrat
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74.7%
48.0%
Republican
21.0%
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45.9%
Independent Other
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5.9%
6.0%
Housing
VOTING CHART
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