Schwarzenegger must be worried about his proposition record because he's just gone against the party again (
L. A. Times Story-registration required)
The open primary initiative (prop 62) would replace the normal primary with a blanket primary. Everyone runs in this one and the top 2 vote getters face off in November. It's smart politically for the Governator as he's unlikely to survive a traditional GOP primary.
Add this to his late endorsement of the stem cell initiative (both of which just a few days ago we were told he wouldn't take a public stance on) and he's clearly concerned about the political capital that he's expending on the other propositions. This is his chance to come out on top.