"Religious affiliation" refers to a person's identification with a particular religion or religious group. It signifies the beliefs, practices, and community that a person is associated with in terms of their religion. Full definition
They may have Jewish heritage, but from the stand point of religious affiliation in the here and now, they are not Jewish. (sbnation.com)
Previous studies have shown that spouses share political views more than almost any other trait, with religious affiliation being the exception, the study's authors write in a news release. (wtop.com)
Basically, you have to see people as American first before you start trying to pick and choose who gets what based on religious affiliation. (religion.blogs.cnn.com)