What? The advertisements or the play itself? If you are attributing the play itself to the presidential race, I think you are mistaken, because the play was in development long before the Romney was a candidate, and is by the creators of South Park (Trey Parker and Matt Stone), which have often featured the Mormon religion in their works[1].

1: http://www.imdb.com/title/tt0124819/

2: http://www.imdb.com/title/tt0705893/