The 2008 California State Senate elections took place on November 4, 2008. Voters in California's odd-numbered State Senate districts, a total of 20, voted for their state senators. No seats changed parties and the Democratic Party maintained its 25-seat majority, while the Republican Party held 15 seats. Other elections also took place in California on November 4.
Only a single State Senate district, the 19th, was considered truly competitive by political analysts.
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The following candidates are the official results from the California Secretary of State.