Slate's got an interesting article up about measuring the effects of the under-30 vote:

...On Election Day 2004, kids turned out in record numbers: About 4.6 million ! more people under the age of 29 voted in 2004 than in 2000. Yet 18- to 29-year-olds accounted for only 17 percent of voters—roughly the same as in 2000—because the geezer vote also grew. As a result, youth mobilization was declared a myth, perhaps unjustifiably. "We rocked the vote all right," Hunter S. Thompson said at the time. "Those little bastards betrayed us again."

Read the rest...