San Luis Obispo County, California
Votes
Percentages
| Year | Democrat | Republican | Other | Total | |||
|---|---|---|---|---|---|---|---|
| 2000 | 44,526 | 40.9% | 56,859 | 52.2% | 7,501 | 6.9% | 108,886 |
| 2004 | 58,742 | 45.7% | 67,995 | 52.9% | 1,910 | 1.5% | 128,647 |
| 2008 | 68,176 | 51.4% | 61,055 | 46.0% | 3,422 | 2.6% | 132,653 |
| 2012 | 61,258 | 48.8% | 59,967 | 47.7% | 4,413 | 3.5% | 125,638 |
| 2016 | 67,107 | 49.7% | 56,164 | 41.6% | 11,738 | 8.7% | 135,009 |
| 2020 | 88,310 | 55.3% | 67,436 | 42.2% | 3,968 | 2.5% | 159,714 |