I agree, I feel betrayed. I gave money to both Bush campaigns, volunteered A LOT back in '04. I did it for the judges, judges, judges.
This is the thanks we all get for working our arses off.
I've been working my ass off since 1988 when I registered to vote at the age of 18. Even if that meant voting for GHWB and Bob Dole. Did I feel betrayed? No, and I didn't go around with a defeatist attitude written all over my face. You don't win battles by not showing up at the ballot box, and you don't win battles by betraying your own grassroots army which comprises the base.
Most importantly, you don't turn your guns on your fellow base members or your own leader because you feel defeatist and betrayed.