It doesn't matter if you are asked for your opinion by your boss, in an "anonymous" survey, or by a co-worker at a seemingly innocuous kids birthday party. There are no friends in business. Stick to business. Anything you say can and will be used against you.
I'm not a very political person. I don't have strong feelings about it sir. Taking care of business is my priority.
Lol that happened when I worked at Chase many years ago... I didn't fall for it, but several of my colleagues did... As I recall, there were some legal issues that came out of it...