"In the 2010 electorate, the proportion of voters under 30 fell by roughly a third, while the proportion of voters over 65 years old rose by a similar amount—the white share, too." - "Why 2012 is the Republicans' Last Chance", Jonathan Chait, New York Magazine, 2012-02-26.
In other words, if you don't show up because your "side" has not lived up to your expectations, you will give the election to the other "side" who wants to defeat your "side".
