This junk science needs to go no further than do a study between OWS and the people of Iran/Iraq. On one side you have free thinkers...some violent, some abhor violent...some for free love, some for chastity...etc....but all mixed in one large melting pot. On the other side you have "brainwashed" thinkers....divided by gender....all of the same sexual morals.......all violent to a common cause....etc.
My point would be to discredit this junk science because political alignment due to chemical reaction within the brain is simply at best. The brain allows for many possibilities, just as a computer, and with additional input of knowledge can change course. This gives rise to the expression: People can change.
On the other hand, people can be brainwashed through controlled knowledge input, either willingly or unwillingly, either consciously or sub-consciously.
Therefore, these studies of chemical reaction of the brain are at best left in the labs, they are not applicable to real life.