Lowell summed up
He notes that Harris Miller has favorable-unfavorable ratings of 7-21, and that James Webb is at 11-19 (each are unknown at a rate of 36% in the samples). The Virginia blogosphere's biggest fan of Webb does note that he has an incredibly low recognizability, but after that, it is all spin. He neglects to mention the error of +/- 4.6%. Lowell says that Miller has an "awful" rating, but Jim Webb's is only "not great". Funny, let's look again. With even one standard deviation, there is approximately a 68% chance that Miller's favoribility may fall in the range of ~2.5-~11.5%, while James Webb is between ~6.5% and ~15.5%. That leaves a considerable range of overlap. It is most likely that James Webb has a better rating than that of Harris Miller; however, it is not by much. Nearly six months out of the general election, the primary contenders for the Democrats are both relative unknowns and viewed unfavorably by those who do know of them. George Allen's "worst nightmare" may not even present a challenge.
I can honestly say that I would like to see Harris Miller chosen in the primaries. Not because I see Webb as any sort of serious contender (these poll numbers are not aiding Lowell's cause), but because I can see that Lowell will have to take back months of attacks if he wishes for George Allen to be defeated.