Granted, I worked there in 2005 (off year), but I don't recall anything about them telling me who to vote for. And I do recall some lib associates talking during their breaks.
Seriously, what kind of jackass asks this kind of question? Of course Wal-Mart doesn't tell it's associates how to vote. Last I checked, that was illegal.
Okay, now that I've defended Wal-Mart, I feel a little dirty.