May have posted this in the other thread - incorrectly! - but it might do for both...
I didn't know this until very recently, your political persuasion is largely influenced by the construction of your brain. If you are the sort of person that uses the left hemisphere of your brain, then you are likely to be methodical, business like, scientific, organised... If you are the sort of person that uses your right hemisphere more then you are more likely to be artistic, creative, instinctive, having a good gut instinct. People with tendency to use their right Hemisphere I more likely to be liberal in their outlook.
Now I'm more of a right hemisphere person, but I was brought up in a left hemisphere household, so I'm a bit conflicted! I'm the sort of person that sits on the fence, and for a long time I thought it was a weakness, although I do get much enjoyment playing Devil's Advocate with people and also switching position.
My biggest gripe with politics used to be that one party gets in and undo's everything the previous party did at great expense! Then they switch over and the same thing happens again and again and again... But I now realise that this flip-flopping, causes something useful to happen there's an average, the political spectrum moves to the left and then back to the right and then to the left and then back to the right and down through the middle you have a Centre Line where things are about right.
I tend to have friends on both sides of the fence, and I see the merits and problems with both approaches to politics.