Santa Clara County is represented in the California State Senate by four districts, which have been re-numbered and slightly reconfigured by the Citizens' Redistricting Commission, as detailed below. Only odd-numbered districts are up for election this year.
District 10: Residents in north San Jose and Milpitas will continue to be represented in District 10, which now includes the city of Santa Clara and more of Berryessa. The new district extends north to Castro Valley in Alameda County. Senator Ellen Corbett represents the district.
District 13: The new District 13, centered in San Mateo County, includes cities in the northwestern tip of Santa Clara County - Palo Alto, Mountain View, Sunnyvale and Los Altos - that had previously been split between two Senate districts. Democrats Jerry Hill and Sally Lieber are running in the June primary to represent this district.
District 15: This newly configured district stretches from Saratoga, Cupertino, Los Gatos and Campbell across Alum Rock and the East Foothills to the county's eastern border, combining sections of the old 11th and 13th districts. Democrats Jim Beall and Joe Coto are running to represent this district.
District 17: The new 17th district reaches from Santa Clara County to San Luis Obispo. Whereas the old district snaked all the way north to Saratoga, the new district starts farther south, but captures the entire southern half of the county, including the cities of San Martin, Morgan Hill and Gilroy. Santa Cruz Assemblymember Bill Monning is endorsed by the Democratic Party for this seat.