Well, if some of us "stutter" it's only because we have to keep repeating ourselves as to what is objectionable about Mormonism. Not only that, but this writer himself gives us a nice standard upon which Mormonism is objectionable:
I am a practicing Bible-reading-and-believing Baptist Christian, and I respect any Christian denomination that shares the same basic beliefs. I cannot respect a religion that trashes other Christian denominations, or one that seeks to destroy other faiths.
So, he "cannot respect a religion that trashes other Christian denominations, or one that seeks to destroy other faiths," eh? Well, Mormonism qualifies on the basis of both its rhetorical track record (which I won't go into in this post) + it's "First Vision" Scripture. Note how Joseph Smith tried to trash ALL of Christianity in one fell swoop:
"My object in going to inquire of the Lord was to know which of all the sects was right, that I might know which to join. No sooner, therefore, did I get possession of myself, so as to be able to speak, than I asked the personages who stood above me in the light, which of all the sects was right — and which I should join. I was answered that I must join none of them, for they were all wrong, and the personage who addressed me said that all their creeds were an abomination in His sight: that those professors were all corrupt..." (Joseph Smith - History, vv. 18-19, Pearl of Great Price)
I can think of no other way in which his Mormonism would be relevant in the Presidential primaries.