Vote
Molly Ivins has a good column up on why you should vote.
Are politicians vane, vapid and power hungry? Sure. The wonder of democracy is that one can harness those traits to do your bidding. Or at least stop the bidding of the bigger idiot. While posting on a political blog is likely to be preaching to the choir, vote.
I have met those who were raped and tortured while struggling to achieve democracy. When my normal level of cynicism gets high, I remember them and their stories. What we have is remarkable and unique in the entire history of humanity. Don’t treat it lightly.