A quick look at the methodology zogby employs shows that anybody who didn't vote in 2000, has moved recently, does not follow local politics, or doesn't care for kerry/bush but is voting for them anyway because this is a super important election year, will NOT be included in the "likely voter" category. Their methodology is pretty screwyand does not give an accurate snap-shot of the national feeling. National political polls are almost absolutely worthless when viewed independently. They are somewhat valuable when looking for trends, which is bad news for bush, since he has had a tendency to lose ground steadily between the bumps of 9/11, Iraq, and his convention.