This is interesting. The Pew Research Center for the People and the Press has come up with the following numbers:
Americans who consider the U.S. a Christian nation: 71%
Americans who considered the U.S. a Christian nation in 1996: 60%
Americans who say both creationism and evolution should be taught in public schools: 57%
Americans who say only creationism should be taught in public schools: 33%
Americans who have a favorable impression of the conservative Christian movement: 41%
Americans who have a favorable impression of Muslims: 45%
Although we're heartened by the numbers in the first two categories we have to wonder how it could be that Muslims have a better image in what 71% of Americans say is a "Christian nation" than conservative Christians do. The incongruity of this datum makes us reluctant to be too encouraged by the rest of Pew's results.