This is a great point, I think I've mentioned elsewhere in this forum that it's a myth that the 18-vote is/was overwhelmingly democrat. It's actually fairly evenly split and I think if there are any
good, reliable post election studies out there, they may very likely show an even split in voting as well.
I was very proud to have 2 sons voting in their first presidential elections. Unfortunately, or fortunately...depending on you view, I've raised them to think for themselves and I have a feeling that at least one of their votes canceled out mine!

I didn't think my oldest (who lives in another state now) was actually going to vote, he seemed very apethetic about it..but he called me that night to let me know that he had voted. Of course, he then proceded to tease me by not telling me who for! Argh! Kids!