Partisan Affiliation

Percentage of Registered Voters, by Political Party

Santa Clara & San Mateo Counties

Data Source:

California Secretary of State, Elections Division


Silicon Valley Institute for Regional Studies

Data are from the California Secretary of State, Elections Division. Silicon Valley data are for Santa Clara and San Mateo counties. Other includes Green, Libertarian, Natural Law, Peace & Freedom/Reform, and Other. No Party Preference was formerly called Declined to State.

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Resources for Relevant Data and Reports (show)

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