Interesting voting pattern. To my mind, that pattern is another argument in favor of score voting (sometimes called "range voting") [1]. I'd vastly prefer score voting to our present plurality voting for all elections, and of course most importantly, national elections. This would have allowed me and you to score Obama, Romney, and Gary Johnson according to how well they match our ideals.
I grow increasingly weary of either "choosing the lesser of two evils" or "throwing my vote away."