I had heard of a study similar to this one before. Genetically, I seem to be pre-disposed toward being easily disgusted (except gore, that doesn't bother me at all).

However, my views have become less conservative over time. Well, maybe not for me personally, but at least the way I view everyone else (for example, I would never do drugs myself, but I don't care what everyone else does).

I don't think my "disgust response" has changed however, so I wonder if I have an innate predisposition to being more libertarian that I've moved toward over time.

I'm not sure what word you're looking for, but the opposite of conservative is liberal. Libertarianism is a pretty vague and complicated concept, as the Wikipedia page on it will tell you.

A single dimension of political ideology is ridiculous.

Technical means of proving that social elements to political beliefs. Showing a picture of a SF rainbow parade to a conservative in a farm house in the mid west will elicit the same mental response as showing the rainbow parade participant a picture of the conservative in the farm house. This is purely social.

except the pictures aren't anything like your example.. snakes, babies, seagulls, lamp, dog, etc.

Rainbow, parade, and farm house weren't even on the list.