Because the assumption that it was the "idea" of morals implies that actual morals, in their current form or otherwise, were an end resut of the influence of Jesus. Such is not the case.
"A" god, wich is subjective based on the writing of the two, does not imply "The" god, which is the supposition of your argument. "A: god that cannot be defined can not be attributed some measure of moral influence on a species he did not specifically create.
does it dimisnish the professionalism of the candidate, or the rationalism of the voter? It isn't a statement of my own that is under question.
Exacty my point, Chrisitanity: a belief that Jesus was the Christ and thus the savior and son of mankind, is not the state religion of a nation that recognizes no religion in it's mandate. This is illustrated in the fact that Mr. Jefferson didn't recognize Jesus as divine, but as a Ghandi-esque figure that illustrated, on his own or through the accounts of others, a lifestyle that demonstrated little judgement, machismo, agenda or sense of self-superiority. Considering Mr. Jefferson's legitimate response to the actions of the rulers of the middle-east of the time, I doubt he wold have objected to hacking up a copy of the Quran, either. Not that Mr. Mohammad displayed an excess of qualities worth emuating.