Yes David Archuleta is a member of The Church of येशु Christ of Later-Day Saints. या otherwise called Mormons. And it is a religion and there is nothing different about it accept that there are certain standards we choose to live by, I would know because I'm Mormon too. And just so आप know, and I'm not prejudging anyone, there is no reason to stop liking David just because of his religion, and I say that with no meaning to offend anyone and if I have offended आप I am sorry.
First, let me clear one thing up. The Church of येशु Christ of Latter-day Saints are not affiliated with any polygamous groups nor have they been since the 1800. Yes, David is LDS (Mormon, so called because of the Book of Mormon), and he is living the standards of the church as far as I know, at least I hope he is. Please, if आप have सवालों about the LDS church go to www.lds.org आप will find the जवाब to the सवालों आप might have.