Why be a Democrat?
Or, why be a Republican? Or a Green, or a Libertarian, or a member of any of the other forty or so recognized political parties currently active in the United States? Or, why be "decline to state?"
Delve into a Democrat and the response will be deeply demonstrative. Regard a Republican with the same question and be regaled with resonate replies. Inquire of an "independent" and incite that individual's inspirations on the inadequacies of the others.
A recent survey conducted and published by The Economist and YouGov provides some substance behind one of my reasons for choice of party affiliation, and perhaps does the same for others, too.