Turf War?

When I was waiting at the Dr's office the other day, somebody left a booklet on my windshield published by some Evangelical group in SoCal that's titled "A Kindly Word about the differences between Mormonism and True Christianity." It's a thinly veiled (they keep stressing how much non-judgemental love they have for their misguided Mormon brethren) take-down of the LDS and Book of Mormon. The really crazy part is that like with all conservative Christian literature, the "Biblical Scholars" they always cite are people who were publishing around the era of the Scopes Trial. I was curious enough to skim all the way through and the tone gets more strident as it goes on, only making the statement of how true believers should not be "snared by the Devil's trap of creating a faith that mimics Christianity" at the very end of it.

I had no idea though that there was some kind of turf war going on for new souls. It makes sense because salesmanship is one of the tenets both of Mormonism and non-mainline Evangelical Christianity. But now I'm wondering if this signals some kind of larger change in the culture at large? Or is it just that Mitt Romney has the conservative Christian wing of the GOP freaked out enough that they're trying to convince their own not to vote for him?