Why wouldn't he support other Republicans? You're just being paranoid, nick.
And you know very well he WILL support GWB in 2004, which will force the Dems to sink tons of cash into the state to hold on to it.
Well, just hear me out. The reason I say that is because he made Richard Riordan the head of his issues teams. Riordan never met a Republican he liked. I can't find evidence he's endorsed any Republican before Schwarzenegger. But it's a matter of public record he's endorsed lots of Democrats. he was one of the major campaign donors to Gray Davis. He endorsed Maxine Waters. He endorsed spendocrat State Senator John Burton. He endorsed former Los Angeles Mayor Tom Bradley, just to name a few lefties he supports.
Just to let you know, it's not that unusual thing here. The two most prominent elected Republicans in my areas turned down all requests to endorse fellow Republicans (bother liberal and conservative Republicans).