I was just reading an article in
Mother Jones about the possibility that there are actual neurological differences between liberals and conservatives-- in other words, that people's political bent may be nature, not nurture. Interesting stuff.
For me, it brought back to mind a question I've been personally curious about since childhood. I was adopted into a (wonderful) family as an infant. I was always an odd duck. My whole family is politically conservative-- I started voting liberal in second grade, during a mock presidential election.

My family is very religious; I knew before puberty that I was agnostic.
My sibs (all bio kids) all live in the county where we grew up. I moved 3000 miles away. None of them completed a full year of college; I have a graduate degree. And so on, and so on.
I know that every family has its "black sheep," and its outliers, but I'm still curious to hear others' take on this. Thanks!