Presidential elections · 2000–2024
San Luis Obispo County, CA — Presidential Election Results (2000–2024)
In 2024, San Luis Obispo County, California voted for Kamala D. Harris (Democratic) by D+10.9 — 81,314 Democratic to 64,932 Republican of 150,766 votes cast. From 2020 to 2024 it shifted 2.2 points toward Republicans. That makes it 9.2 points more Republican than California overall (D+20.1).
Data: MIT Election Data & Science Lab, Harvard Dataverse.
Margin by election, 2000–2024
Democratic minus Republican, in points of all votes cast — blue bars Democratic, red Republican.
Every election in San Luis Obispo County
| Year | Democratic | Republican | Other | Dem share | Rep share | Margin |
|---|---|---|---|---|---|---|
| 2024 | 81,314 | 64,932 | 4,520 | 53.9% | 43.1% | D+10.9 |
| 2020 | 88,310 | 67,436 | 3,968 | 55.3% | 42.2% | D+13.1 |
| 2016 | 67,107 | 56,164 | 11,738 | 49.7% | 41.6% | D+8.1 |
| 2012 | 61,258 | 59,967 | 4,413 | 48.8% | 47.7% | D+1.0 |
| 2008 | 68,176 | 61,055 | 3,422 | 51.4% | 46.0% | D+5.4 |
| 2004 | 58,742 | 67,995 | 1,910 | 45.7% | 52.9% | R+7.2 |
| 2000 | 44,526 | 56,859 | 7,501 | 40.9% | 52.2% | R+11.3 |
San Luis Obispo County presidential elections — FAQ
Who carried San Luis Obispo County in the 2024 presidential election?+
Kamala D. Harris (Democratic) carried San Luis Obispo County, California in 2024 by D+10.9, with 150,766 votes cast. Data: MIT Election Data & Science Lab.
How did San Luis Obispo County shift between 2020 and 2024?+
San Luis Obispo County shifted 2.2 points toward Republicans between 2020 (D+13.1) and 2024 (D+10.9).
Is San Luis Obispo County more Democratic or Republican than California overall?+
In 2024, San Luis Obispo County went D+10.9 while California overall went D+20.1 — 9.2 points more Republican than the state.
Where does this election data come from?+
County-level presidential returns (2000–2024) come from the MIT Election Data and Science Lab (MEDSL), published on the Harvard Dataverse. pumsdata is an independent product that makes the data easy to map and compare, and is not affiliated with MEDSL or Harvard.