California Voter Registration Statistics

An overview of California voter registration data, including No Party Preference voters,

based on publicly available information.

Trends in California Voter Registration

Statewide Registration Snapshot

• Total registered voters: 23,093,274

• Percentage of eligible Californians registered: 84.87%

• No Party Preference voters: 22.60%

• Voters registered with a qualified political party: 76.36%

• Democratic Party registration: 44.93%

• Republican Party registration: 25.22%

Counties with the Highest Voter Registration by Party

Top 10 counties by percentage of registered voters, by party affiliation

Democratic Party

San Francisco – 62.31%
Marin – 61.54%
Santa Cruz – 58.55%
Alameda – 57.88%
Sonoma – 55.30%
San Mateo – 54.93%
Contra Costa – 51.84%
Los Angeles – 51.17%
Monterey – 50.02%
Yolo – 49.95%

Republican Party

Lassen – 57.89%
Modoc – 56.62%
Shasta – 51.96%
Tehama – 50.37%
Amador – 49.56%
Calaveras – 48.94%
Mariposa – 47.59%
Glenn – 47.57%
Sierra – 46.45%
Tuolumne – 46.44%

No Party Preference

Santa Clara – 27.73%
Imperial – 25.47%
Alameda – 24.70%
San Francisco – 24.43%
San Mateo – 24.34%
San Diego – 24.02%
Alpine – 23.90%
Orange – 23.28%
Los Angeles – 23.18%
Yolo – 22.71%

These county-level percentages highlight regional differences in party registration across California and provide additional context to the statewide registration data above.

California Secretary of State – Report of Registration
Statewide Special Election, 15-Day Report

https://www.sos.ca.gov/elections/voter-registration/voter-registration-statistics

Pre-Registered Voters: A Look at Future Voters

126,320 Total Pre-Registered Voters

No Party Preference: 49,435 (39.13%)
Democratic: 47,553 (37.64%)
Republican: 21,254 (16.83%)
Other: 8,078 (6.39%)

Pre-registered voters represent Californians who will soon enter the electorate. The data shows that No Party Preference is the largest category among pre-registered voters, offering insight into how future voter registration trends may continue to evolve.

Together, statewide registration data and pre-registration trends provide a clearer picture of how California’s electorate is evolving.