Taken individually, political polls are pretty useless.
Most polls fall into the margin of error, and most of them also bring their own biases in the way they ask questions and calculate responses.
Despite that, polls can still be a useful indicator in predicting future election performance, especially when its done like RealClearPolitics.com does it. What they've done over there involves taking aggregates of multiple polling results and putting them together to create a meta-poll or average of the polls.
In that final tally, the polls are showing Obama in a clear lead that usually beats the +3/-3 margin of error.
Even more significant is what these results look like on the state by state basis of the
Electoral Map Polling.
What the polls show today is that Obama could win the election just with the states where he is ahead by the margin of error or more. All of the "close" states that are greyed out wouldn't even matter, because the blue ones he already has are enough to win.
What is absolutely shocking is that West Virginia and North Carolina have gone gray and Georgia is fading from dark red to light.