The numbers below are the percentages of registered voters in each county who participated in the presidential election.
| Los Angeles | 65.70 | 74.63 | 67.46 | 68.02 | 78.36 |
|---|---|---|---|---|---|
| Orange | 74.60 | 87.24 | 80.71 | 37.33 | 72.62 |
| Riverside | 67.30 | 81.91 | 75.48 | 70.98 | 78.46 |
| San Bernardino | 62.10 | 77.32 | 75.77 | 69.24 | 74.28 |