Offhand I would guess there is a fair amount of liberals in my area... Even with a reputation for being one of the more conservative areas in the Bay Area. There are a lot of immigrant professionals (Indians, Chinese) who as far as I can tell often vote liberal because they grew up in relatively socialist environments from their native countries and are fairly inured to them. But I also happen to know that most of the small business people are very conservative-- probably a very decent percentage of them would be for McClintock, especially if his poll numbers rise after the debate. My own church pastor surprised me by telling me he is for Arnold :-( . I didn't bother to argue since he is fairly politically attuned to begin with and figured it wasn't worth the effort to try to budge him (sheesh ;-).
I may be wrong but Silly Valley generally does not seem very conservative these days :-( . Apparently most have yet to learn the lesson about what more taxing and more spending will eventually lead to... I guess a lot of us are still having a liberal political hangover from the '60s.
I'm not saying McClintock will lose, or Arnold will win. I'll admit McClintock probably has his work cut out for him, though, on the liberal enclaves along the populated coast. Back in the country, I don't think of it as much a problem for McClintock, but that's not where the density is.
I'm OK with Arnold as a person, I guess (since McClintock is better I have not yet been forced to consider Arnold very seriously) but I don't like some of his positions. So I'll probably stick a McClintock sign in front of the old homestead around the time of the debate and hope for the best...