I think the loss on parental notification was due to non-parents. San Francisco has fewer children per capita than any other major city. I don't know the stats on this, but I'd guess that a lot of coastal Northern California is like this. A lot of yuppies with no kids, or only one kid who's a boy, and like most yuppies they don't give a damn about the concerns of others.
Latinos likely turned out in small numbers, as minorities often do on these off-year elections. Arnold's reform initiatives brought the selfish element out in force (to vote "no" so as to protect their power and entitlements). Then there were the people who didn't understand the issue, so they voted "no" to be safe, people misled by the media and fraudulent Planned Parenthood advertising, etc.
This is one issue where there might be a future for the state. As the Latino population grows, they might eventually be able to outvote the elite white yuppies on this one.
This is where it does get interesting. The white yuppies keep getting older, and they don't have children. Eventually they will die out due to lack of survival instincts (How else do you explain voting for socialism? You have ZERO survival instincts!).
Who will replace them? The Latinos mostly (if they can be motivated to participate that is). They are a whole new breed -- more socially conservative (for now) but fiscally liberal. Which only makes them half as bad as what they replace.
I really do wish we could break up the state! It truly is ungovernable the way it is setup right now.