Vote. And You Don't Have To Be 18.

The Republicans in the Senate want to take away the filibuster option so they can get some crazy religious nuts into judiciary positions. The filibuster is the last defense of the little man, and has been around for hundreds of years. Just sign this and, though it probably won't make a difference, it'd still be nice.

http://www.johnkerry.com/petition/usatoday.php?source=5120