My stomach hurts.
:(
People have to be home to participate in a poll. They have to be home, answer the phone, and participate. So that right there eliminates anyone who works a night job or stays at work late. Those people are not part of the study. And what about the people who never answer the phone?
But hold on, you say. These pollsters wait until they have a fair or even sampling rate, they use weighted averages and blah-blah. Still, the people I'm referring to are not counted. The question is how many are there? And how are they likely to vote?