Three days after that much-hyped event, Gore led by 46 to 41 percent -- a statistically insignificant difference.

CNN: Analysis: No change in presidential race after debate

By contrast, it was reported that some Bush advisers discussed plans before the election to try to challenge the Electoral College result if--as seemed more likely at the time--Bush got more popular votes but Gore led in electors.

CNN: Why Gore Has the Right to Fight

Among all likely Iowa voters, Bush led Gore in a hypothetical match-up by 52-40, with 8 percent undecided.

CNN: Bradley gains Iowa support