It is nothing more than database query constraints that produce a desired result for whomever is paying for the poll. It is that simple. Polls are used today to do several things;
1. Keep the base energized and in such keeps the money spigots wide open.
2. Have the documented ability to shape public opinion.
3. Keeps pollsters gamefully employed to sell their database management skills to the highest bidder.
I could go on but when it is ready, I am developing my own random polling system in which I will show how out of a sample of 3000 individuals polled, the published result will be made whatever the criteria for the query formula variables dictate.
Remember this, no pollster works for nothing and somebody will need to pay for it, or he will not be in business for very long. Already we are starting to see the sample criteria change and the results are changing as well.
I wish I could get my hands on Obama’s/Romney’s internal polls. Those are the ones done with 100% focus on predicting the actual outcome.
"Keeps pollsters gainfully employed"