I don't know if the Fox pollsters published online their final adjusted poll in 2004 election, but I clearly remember a Fox talking head reporting the Kerry 5% lead on election day. And a day before...
Reported here on FR, that on November 1st 2004, a day before the election, Kerry had a 3% lead over Bush:
(November 1, 2004) Fox News Poll: Kerry 48%, Bush 45% (RV)
Where I said in post #6 four years ago, "On election day in 2004, the FOX poll had Kerry winning by 5%."
http://www.freerepublic.com/focus/f-news/2102492/posts?page=6#6
Found it; bookmarked a link to it in my web browser. Look at this poll released two days before the poll you referenced. Geez, Fox poll results moved significantly within just two days:
http://www.foxnews.com/projects/pdf/103004_poll.pdf
In 2004, FOX contracted with the polling firm Opinion Dynamics. Their current contract is with two firms, Anderson Robbins Research (D) / Shaw & Company Research (R), neither of which, that I am aware of, has any track record of reliability, and the weighting would preclude giving them any credibility.