Finding Wisdom Faster: San Diego County, CA General Electoral Evolution and 2028 Prediction
- AJ
- Feb 17
- 2 min read
A comprehensive analysis of San Diego County's voting patterns has been added to myvoterwisdom.com, revealing fascinating trends in one of California's most populous regions. Using official data from the San Diego County Registrar of Voters (sdvote.com), we can trace a clear electoral transformation over the past two decades.
Year | Total Registered Voters | Total Voted | Democrat | Republican |
2024 | 1,983,767 | 1,503,018 | 841,372 | 593,270 |
2020 | 1,949,073 | 1,627,753 | 964,650 | 600,094 |
2016 | 1,652,875 | 1,311,618 | 735,476 | 477,766 |
2012 | 1,563,093 | 1,193,949 | 626,957 | 536,726 |
2008 | 1,488,157 | 1,235,503 | 666,581 | 541,032 |
2004 | 1,513,300 | 1,138,797 | 526,437 | 596,033 |
Historical Context
San Diego County's political landscape has undergone a remarkable shift since 2004. That year marked the last Republican presidential victory in the county, with subsequent elections consistently favoring Democratic candidates. The data shows steadily increasing Democratic margins, reflecting changing demographics and voting patterns.
Voter Registration and Turnout Trends
Our analysis reveals interesting patterns in voter participation:
2024 saw 1,503,018 registered voters with 1,275,304 ballots cast
2020 recorded 1,627,753 registered voters with 1,438,160 ballots cast
Earlier elections from 2004-2016 showed steady growth in registration numbers
The Numbers Tell a Story
The Democratic advantage has grown notably:
2024: 841,372 Democratic votes vs 593,270 Republican votes
2020: 964,650 Democratic votes vs 600,094 Republican votes
Progressive decline in Republican vote share since 2004

Looking Ahead to 2028
Based on current trends and data analysis, projections suggest a continued Democratic advantage in 2028. The model predicts approximately 984,652 Democratic votes versus 567,927 Republican votes, maintaining the pattern of Democratic dominance in the county.
Note: Some historical data points (marked with zeros in our records) were unavailable in the official records. This transparency in data reporting helps maintain the integrity of our analysis while acknowledging information gaps.
Visit myvoterwisdom.com for detailed analytics and to explore these trends further. As with all electoral predictions, various factors could influence future outcomes, but the current data suggests a strong Democratic trend continuing through 2028 in San Diego County.
Good stuff! Very informative!