Since 2022 New district boundaries drawn by the 2020
California Citizens Redistricting Commission went into effect for the 2022 elections. The 12th State Senate district now encompasses the southeastern
Central Valley and the northwestern corner of the
Mojave Desert; and it includes portions of
Fresno County,
Kern, and
Tulare Counties, including the following cities: As of February 18, 2020, the district had 377,188 registered voters, of whom 45.00% were registered as
Democrats, 26.35% were registered as
Republicans, and 23.22% were registered with
no party preference. == Election results from statewide races ==