The polls are off -- ironically for the same reason that caused the pollsters to call it for Dewey in '48 -- telephone surveys.
Pollsters do not call cell phones, and often are ignored by people who have caller id. So their samples have a disproportionate number of people with land-lines and no caller id. Who are they? Typically poorer and less sophisticated -- Democrats. Depending upon the state this could give a 5% to 15% bias in favor of the Democrats in a poll.
Additionally people are less likely to open their doors to door-to-door interviewers, so even that won't work.
Hoo-ah. Bad polls forever!
Hoo-ah. Bad polls forever! I'll admit that it's harder to conduct an accurate poll, but we still get accurate projections to the market.
We have ways to make you talk :-)
Voice your opinion. Be heard. Companies can't give you what you want, if you don't tell them what it is.
The increasing cost of polling, like any other cost, is passed on to consumers.