Doug Mataconis explains why he’s not sorry for voting for Bob Barr last fall:
Which is worse ? Supporting a candidate you know is “terrible” and staying silent about his many, known and obvious, failings ? Or supporting a candidate that clearly stands up for the principles you believe in even though you know he is going to lose ?
He has more reasons, all of them good.
I’d add that there’s never anything to be ashamed of in voting your conscience.