I believe that "knowledgeable voter turn-out" is decreasing. This means that young voters are voting for candidates whom they do not know anything about, such as their issues, plans, etc. Voter turn out is probably decreasing because each candidate spends one too much time making smear commercials, and the young voters do not care at all about the elections, as they believe "ooh hey, I'm not an adult yet, this won't affect me... I shouldn't vote at all!"
A lot of my friends say they hate President Bush. Because of this, I ask them exactly why. They answer "just because he's Bush." I am just using them as an example.