First off, between the libertarians and the values voters there were a whole lot of other voters. Values voters were, from what I can tell, about 35-40% of Bush's support. Significant, sure, but not a majority.
The framers of the Constitution were a pretty wide range. Madison, I believe, had got in trouble for writing bawdy verse in college and still had a liking for it. In any case, campaign songs of those days -- political speech -- could get real raunchy. Jefferson and Sally Hemming for example.
As for WW2, I don't know if porn had an effect one way or another. But Airplane nose art sure had a positive effect on U.S. morale -- and a lot of it involved nudity, if not out-and-out porn.
I'd consider myself as a "values voter" but the values I was voting for were courage and integrity and loyalty, not priggery and prudery.
The MSM willingly misinterpreted the values votes and gave them more weight than they should have by both mis-defining values and splitting "war" and "terrorism" into 2 separate issues.