Reported registration levels are the highest they’ve been since 1960-64. Most of this increased registration level is attributable to increased registration in the battleground states. Here’s Curtis Gans of the Committee for the Study of the American Electorate on the likelihood of increased turnout this year:
There is reason to believe that this year’s increased registration, coupled with heightened voter interest and intense feelings generated by the 2004 election campaign, will produce substantially higher turnout this year.
Speaking as an old turnout hand, Gans is usually right in this area, so I’d put considerable stock in this assessment.
Another piece of evidence: early voting is going through the roof. On to election day.