NEW YORK — For the first time in its history, the United States does not have a Protestant majority, according to a study. One reason: The number of Americans with no religious affiliation is on the rise.
The percentage of Protestant adults has reached a low of 48 percent, the first time that the Pew Forum on Religion & Public Life has reported with certainty that the number is below 50 percent. The drop, long anticipated, comes at a time when no Protestants are on the Supreme Court and Republicans have their first presidential ticket with no Protestant nominees.

Comments
Hey, Pew - check your history. Protestants are any Christian group who have split with the practices of the Roman Catholic Church. The "Protestant Reformation" split Christianity into three large groups: Eastern Orthodox Church, Roman Catholic Church, and those who protested. The term you are looking for is "Mainline Protestant" or "traditional Protestant".