Interesting ... here, Bush shows a one-week positive shift of 8 points vs Kerry, 5 points vs Edwards, 2 points vs Clark, and 3 points vs Dean. While the results for vs Clark and Dean are within the MOE, the results for vs Kerry and Edwards are statistically significant to the 95th percentile or better. Actually, however, what likely is most pertinent is that across a broad spectrum of concurrent polls, there are differing values within a narrow range-set, indicating very little of significance beyond Bush the Younger scoring preponderantly at or above the 50th percentile, with all others scoring below, though each by margins within or not far outside the respective MOEs of the various polls. I would hazzard the guess that not much of relevance to the coming 9 months or so can be drawn from the so-far-available data. It seems to me Bush enjoys, at least currently and historically, a fairly solid core of support, while the various contenders seem to glow and then dim more or less as the wind blows. This isn't too surprising; the contest to determine who gets to contest Bush the Younger is getting far more attention than is Bush the Younger. Folks tend to think more about what's in-their-face-at-the-moment than to consider the broader picture. Of one thing I'm relatively confident; there will be further swings and shifts of opinion. If, as now seems given, Kerry emerges from today's primaries even more strongly the nominee-apparent, he simply presents himself as a larger target for directed attack, both internecine and from Bush the Younger's re-election machine.
A couple more thoughts; Dean's decision to repudiate his earlier pronouncement regarding his Post-Wisconsin Plans will serve him not at all well in the long run, and Clark and Edwards both will be too broke to continue much longer, while Kucinich and Sharpton may be expected, by virtue of not spending much anyway, to choose to press on at least through Super Tuesday, if for no other reason than to remain in the public eye. The field is likely to narrow sharply after the 17th, if not by tomorrow. Even if Dean persists, making it, in his words, a "Two Man Race", Kerry has a roughly 30-point general advantage over Dean, or better, in almost all state preference polls. In that two-man race, Kerry is driving a sports car, while Dean is pushing a wheelbarrow.