Originally Posted by Bostonian
I have on occasion donated to one of the two main political parties in the U.S., and I think the surveys it sends are laughably biased, even though I generally agree with the policies of the party. I assume the other party does the same thing.

I wouldn't make that assumption. Although in some ways the US political parties are more alike than not (center-right versus far right, for instance), one of the sharpest differences is in their exhibited degrees of sociopathy.