Problem is, nothing has happened that could really be expected to lower Bush's support. He was polling at 52-54%, and I suspect that's where he is now.
Gallup has him at 48% certain. Fox has him at 47% total...
Gallup pushes the leaners, Opinion Dynamics does not.
Look at it this way:
Fox
Bush 47
Kerry 43
Nader 3
Undecided 7
Of those expressing a preference:
Bush 47/93 => 50.53%
Kerry 43/93 => 46.26%
I suspect in the aftermath of the Republican Convention, if you hammered the leaners Bush would have got his share
Gallup says 52/45 after pushing the leaners.
Fox says 51/46 among those expressing a preference.
Pretty darn close actually.
Pushing or not pushing the leaners is a philosophical qustion, there is no right or wrong when you are 2 months out.
Fox uses a much looser voter screen than many which is also a tad Dem friendly (as I posted before - you guys all laughed at me when I said Fox was a bit Kerry friendly methodologically
) so, on balance, I think NOT pushing the leaners is the better choice in this case.