My Dem brother is also seriously considering voting for McClintock by the way. Granted, I had something to do with that. What this state needs right now is someone who really understands the budget, and is willing to make some very tough calls, and take the heat. McClintock is that man. No one else comes close. I say that not as an ideological matter, but rather as one of simple fact.
In any event, I am not worried about a splintering of the GOP ranks letting in Bustamonte at this time. I think the odds that Bustamonte wins due to that happening is low. He might win anyway (although I doubt that too), but if he does, it will probably not be due to this factor.
Arnold's strongest electable attribute is not his status as a moderate, but that he doesn't come across as yet another state-wide, Republican wimp. That's not going to be enough to sway my vote, though.
I think Arnold should bow out so as not to siphon ballots from McClintock. OK, seriously, I'm not excited about a center-left Kennedy beachhead in my state and in my party. Not to mention that he's a ticking, personal scandal time bomb.