One thing that has me hopeful is that most of the polls I've read involve calls to 'likely voters' via their landlines. Many people (myself included) no longer have a landline at all and are unreachable to these polls. I think we probably skew a bit younger & leftward. Not to mention, only a certain sort of person actually even answers a landline these days and only a certain sort agrees to co-operate with polltakers. But suppsosedly these last two factors are figured in.
I am guessing that many folks with landlines [and caller ID] see the 800 number and don't answer. With the depressed economy, many of them might be getting a good share of collection calls for overdue credit cards right about now and avoiding ALL 800 numbers would be a pretty good way to do it.
Just taking a SWAG, I would assume that many of the folks who are behind on their bills, due either to personal decisions or the economy would tend to lean left about right now. They would have to blame somebody and it is the folks on the right that are the most obvious targets.