What is polling *for*?
When the media are in a feeding frenzy for poll results, it seems to me that the motivation is just wanting to know the news before it happens. Even for the campaigns themselves, it doesn't seem to have a real democratic (lower case) benefit. Swinging the vote your way particularly in places where it will get you a parliamentary-seat-benefit, or an electoral-college-vote benefit, is not democratic, or at least not as democratic as making your case clearly, stating your policies lucidly, and communicating with all the voters in all the constituencies. I agree with an earlier poster: the days of polls being able to produce convincing results is over, and I shall not be sorry to see and hear fewer of them in future (supposing that to be likely).