Not as long as others I'll admit. I've heard of Zogby but he fell out of favor with just about everyone I guess.<quoted text>
You haven't been around long, have you? Of course you haven't.
No shifts here. Been quoting Rasmussen for a long time. His right-wing bias is excellent for predicting the actual lead for Obama. If Rassy says Obama up by three, it is actually Obama up by six or more. If Rassy says Obama down by three it is actually Obama even, or up by three.
Zogby who you've probably never heard of, used to be GOP puppet and he did the same as Rasmussen, skewed numbers for Republicans. He got tired of the deception and quit doing it and GOP fired him.
I kinda think like some of the others here that these polls vary so much that it's hard to feel very confident in any of them.