The missionaries have specifically being forbidden to talk about Mitt Romney, we know they are not supposed to discuss politics but I guess due to the attention of Romney being a Mormon, the counsel was needed:
With their dark suits, white shirts and name tags, Mormon missionaries are the most identifiable representatives of the lds church in America.
Yet as they knock on doors or ride their bikes through South Carolina and Nevada neighborhoods during this weekend's presidential primaries, they have been forbidden to talk about Mitt Romney.
The lds church's mission is "to preach the gospel of Jesus Christ," lds spokesman Scott Trotter said today. "As a church we are politically neutral and have instructed our missionaries to focus on that mission and to respectfully decline any invitations to discuss politics."
The Church of Jesus Christ of Latter-day Saints bans all political discussion from its pulpits and young missionaries are not allowed to read newspapers or watch television, so they may not even know the intense political debates swirling about them. They likely know little about Romney's candidacy or positions on issues.
But curious citizens probably ask them about it every day, says Ron Scott, a Boston-based journalist who has followed Romney's campaign closely. "I's sure it's in their face everywhere they go."
Scott served a two-year lds mission to New England from 1965-1967, while Romney's father, George Romney made his aborted attempt to win the White House.
http://www.sltrib.com/faith/ci_8011208