Any state law has to be signed by the governor. Unless s/he feels so strongly about that s/he exercises the veto instead, the fact that a governor signs something into law tells you exactly nothing about who its political sponsors were. As it happens, this legislation was introduced and campaigned for by my State Representative...Democrat Leland Yee of San Francisco:
http://en.wikipedia.org/wiki/California_Assembly_Bills_1792_&_1793Personally, I thought it a waste of time, as the videogame industry seems to do an OK job of rating its own products and I believe it's up to parents to make decisions about what kind of games are acceptable for their kids to play.
I can't help noticing that this information (about the Democratic origin of the law) was in your original link, but you chose to leave that out in order to make fun of Arnold Schwarzenegger. Your post is deceptive, to say the least.