What is John McCains church affiliation?

Answer 1

McCain considers himself to be Episcopilian. But since the 90's he has attended Northern Phoenix Baptist Church. He was quoted as saying "[I found] the message and fundamental nature more fulfilling than I did in the Episcopal church." His wife and two of his three children with Cindy have been baptized as Baptists.

Answer 2

John McCain was an Episcopalian, but now identifies himself as a Baptist.

Answer 3

Southern Baptist, according to Wikipedia.