Most government employees vote dimocrat, because they are voting their own pocketbooks. They want government to get bigger so their paycheck will get bigger.
It depends on which gov't agency you're talking about. I work for a large federal law enforcement agency, and I don't think there's a Dem in the agency. If there is, I sure as hell haven't met them yet.
Now, the social services agencies? That's a whole different ballgame.