I was unable to find any quotes, but from everything I've read, I would say "absolutely not."
Then again, everything I've read may be closer to his alter-ego, and we know how he warped things when he felt in the mood. But I would still suspect "no."
I'm sure a few here could cite some more concrete reasons why.
Edited to add:
For the most part, Buk's works were very a-political, which is pretty amazing given the vast output he had and the times in which he lived. He did have some musings in Notes of a Dirty... about the assassinations in the '60s and certainly his words suggest a sympathy with the Democrats over the Republicans, and that was Buk, not Chinaski, but still, he seemed to eschew all things political, even if he might have had, given his work history, a leaning toward the democrats of his day.
It is notable, however, that when he made it and had a nice house, a BMW and was living no longer day-to-day, that he didn't really have much to say about politics after that. One could only wonder if he had any beliefs about it that may have changed after becoming a "richer" person. I've wondered about that; but not very much.