I used to think I should stick to my guns and vote what I believe. I realized I am a libertarian, but they are just the truest conservatives. That is what the republican party used to be, but when it slid the libertarians snatched up their toys and went home to cry about it. Voting third party is a gift to Obama, go for it if that's what you want. I'll continue to vote for whatever Republican I'm stuck with in November, but actively try to gain votes for the best candidate during primary season. That is the time real change can happen (Richard Mourdock), November is ALWAYS going to be the lesser of two evils.
I think that there's a heck of a lot of folks that feel like you (and I) do.