[mrec]

Pollsters normally have a good idea what answer their customer wants to hear. Those who deliver that answer get more business.

[warkdarrior]

Yes, until their customer sees that the poll results do not match reality.

[mrec]

Polls aren't always about matching reality. They're often used as ammunition in an argument - "Look, the majority supports my position!"

The classic example is https://www.youtube.com/watch?v=G0ZZJXw4MTA