Certainly was the case. Sean Hannity and Rush Limbaugh were on the radio saying don't believe the poll and described how it was an unbalanced sample of voters.
It was a last minute attempt to further make up the news (as happened repeated in the 2004 election, including the forged National Guard memos). The lead 7 minutes of the election coverage ON ALL 3 networks after the polls closed was "Well, Bush lost this election for the same reason as his father, the economy..." Then they realized that their script was obviously wrong.
When they cooked the books on polling figures, they forgot to keep a true accounting so they knew how much they'd still have to make up in knock and drag or dead voter efforts.
B-b-but I thought Bush stole Ohio! /sarc