According to researchers at the University of California, political bias could be a matter of genetics. They have identified a so-called ‘Liberal Gene’ that makes people more likely to seek out less conventional political views.
The gene, a neurotransmitter in the brain called DRD4, could even be stimulated by the novelty value of radical opinions, claim the U.S. researchers. It suggests some people are simply born to be politically radical rather than moulded that way either by their friends, family or teachers.
I must have the lefty gene, and I have to say that when people call me a "liberal softy" I say, "thank you".
Source: Daily Mail