I very much think that when this continues to play out, Edwards will use this as a galvanizing issue to move to the top of the democratic heap - he is out in front of this, and the only candidate (Feingold is not a candidate but is the true issue leader for dems on this) coming out to withhold the funding as the only card to play against Bush in his blank check war position.
I think many Americans will line up behind him - or others - who take on this position. I am very close to doing just that, but will wait and see how it plays out.
Just like immigration will play a big part on the republican side, with stalwarts like Gingrich grabbing the issue and running with it. Things could really change during this political season, with these two issues.