By Ezra
I'm skeptical of the numbers Neil puts out below. These horserace polls are varying wildly, and none of them possess an ounce of predictive ability before an actual, you know, horserace begins happening, and the two candidates unleash their attacks on each other. Those Rasmussen numbers are way more pro-Edwards than any others I've seen, and I'd want to see the results replicated by other pollsters before I too them seriously. But this Zogby poll suggests Obama in fact fares better, and Hillary and Edwards net similar results.
For now, I'd largely discount all of these polls. The general numbers I've seen haven't given any particular candidate a very clear advantage or shown stable trends between the candidates. Moreover, it's early yet, and as unstable as the primary polling currently is, I trust general election polling even less.