Same here. I woke up this morning feeling so calm, peaceful and good about the election, but now reality is setting in and the importance of this election has come home. We had our nephew and his fiancee for dinner and it brought it all to light. He is definitely pro-W, but she was one of those hard to find, truly undecided young people (28 yrs. old.). By the time they left, and I had gone through a four year college course equivalent lecture, she was definitely gonna vote for our president, but the fact that she hadn't spent any time paying attention the last 6 months scared the hell out of me. I find it hard to believe that not all are the political animals we are.
This may not be enough for them to vote republican but it may result in a no vote.
I wouldn't worry too much - I teach college, and from my observations most of the truly clueless youth (who would tend to break for Kerry) are too clueless to register in time, much less obtain an absentee ballot or drag themselves to the polls. The fewer of them that vote, the more our votes count for.