"He was a Republican because his father before him was a Republican and because this county was Republican."
That's from Dreiser's An American Tragedy, which is by the way not a tragedy because of this sentence. Please note that you could replace "Republican" with "Democrat" and the message would be the same; I am not evangelizing either way. Also note that this novel was published in 1925, a full 80 years ago. An appetizer for contemplation.