| Title | Yes votes | No votes |
| Proposition 13: Seismic Retrofitting | 3,263,664 (84.6%) | 598,245 (15.4%) |
| Proposition 14: Primary Elections | 2,117,064 (54.2%) | 1,795,744 (45.8%) |
| Proposition 15: Fair Elections | 1,623,568 (42.5%) | 2,189,734 (57.5%) |
| Proposition 16: Electricity Providers | 1,869,805 (47.7%) | 2,049,858 (52.3%) |
| Proposition 17: Auto Insurance | 1,889,363 (48.1%) | 2,038,215 (51.9%) |
| Endorsements: June 2010 Primary | -- | -- |