Pinging our resident Romneyite Mormon...
I don't know much about this guy, but while it makes sense to garner the support of his co-religionists, it also seems clear to me that many, if not most, may dismiss him for linking his campaign to what is often seen as more a "cult" than a church rooted in Christ. Unlike Democrats, who have the dead vote, though, I think the Mormons limit themselves to just baptising the dead.
Romeny met with Church officials to make sure his plans weren't going to conflict the the Church's policy of staying politically neutral, big deal. Expect to see lots of religous bigotry masked as conspiracy theories, just like when JFK ran.
There are plenty of Mormon organizaitons outside the Church itself that can legitimatly be involved in political activity, and so what if they throw support to Mitt, it is their right to do so. Don't think that Mitt has some kind of lock on the Mormon vote though, lots of them are far more conservative than Mitt is and would like have a better candidate to pick.