Even though I still believe it's, in the long run, a waste of time.
Once, one of my relatives gave me that bull about "if you don't vote, you can't complain." I let her have it, thus:
If I didn't vote, I have more right to complain than you do. Because if I didn't vote, it was because I could not in good conscience support any candidates even with my one insignificant vote. I was a disenfranchised voter before I could even get to the ballot, so you'd better believe I have a right to complain.
This time I mostly voted so that if Cuellar manages to lose, I can say "nyah nyah nyah" with a clean conscience. I will be surprised if he loses, though.