In 1990, 7 percent of Americans claimed they were not a part of any organized religion. That number has now jumped to 17 percent, thanks to an increase of political associations within the religious sector. In a Faith Matters national survey of 3,000 Americans, authors Robert D. Putnam and David E. Campbell found that many U.S. citizens are choosing where to spend Sunday morning based on their political views. It is the prominent association between religion and conservative politics that has provoked the recoil of moderates and progressives from religious affiliations, and has proven especially influential on Americas youth.