Josh Koenig of Music for America said the 2004 youth tally also made the election "a heartbreaker" for progressive groups like his own. "But having gotten over the anguish, we're like 'Fuck, we did our job,'" he added. "If everyone who was working on the older people had done their job, we would have won this thing."
I got quoted in a nice comprehensive piece on the record youth turnout in this past election. Jed, the writer, really covered all the bases (e.g. there are a lot more people quoted in there besides me, natch).