Apologies if I missed this being posted already.
It is defintely still a horse race. Perhaps more so with Clark in the mix.
http://www.gallup.com/poll/releases/pr030915.aspSome interesting (to me) highlights:
The poll shows that Clark's candidacy would draw support from all of the four other major candidates, but that Kerry would probably be most affected. The Massachusetts Senator receives 12% of the vote with Clark in the running, but 15% with Clark not a candidate. Dean loses two percentage points to Clark, while Lieberman and Gephardt each lose one point.
Among liberals, Dean receives 29% support, compared with 11% among moderates and 6% among conservatives.
Kerry also receives little support among conservative Democrats (7%), but does about equally well among moderates (15%) and liberals (13%).
The other three top candidates receive about the same percentage of the vote from each group.
Kerry and Clark fare especially well among people who follow national politics very closely, with both candidates' support falling dramatically among people who are not paying attention.
Lieberman, by contrast, receives much more support from the inattentive voters than among the more attentive ones.