Only takes one person to say something. =p
He could be legitimate about the poll. I mean, it's a pretty straightforward question.
No need to really call anyone out as a troll guys.
Obvious troll is obvious.
Coming up with a huge cast of new characters would be too cost ineffective and time consuming. Either that or less villagers means you would start seeing repeat residents pretty fast. All-around bad idea Im afraid, OP!
Maybe just make even more personality types