Gary North has a great essay on LewRockwell.com, "The Lesser of Two Evils Rarely Is."
In the 1970's, North was a staffer for Congressman Ron Paul, and North has a lot of inside info, including an admission by Larry McDonald, darling of the John Birch Society, that voting for the "lesser of two evils" can be a terrible mistake.
This reminds me of a website I put together before the 2000 elections, encouraging conservatives not to vote Republican by addressing the "I'll waste my vote if I don't vote for the 'winner'" syndrome:
I updated the page slightly before the 2004 elections, and I'm going to have to give it a make-over for 2008. I have secured a new domain for it:
Suggestions appreciated, as always.