Which was highlighted by Newt (along with Mitt's morning after pill lie); his pushback at Obama and Mitt received a lot of coverage and brought it into the light - placing it squarely on the Constitutional pillar of freedom of religion and reminded (or revealed) the fact that Obama pushed for infanticide (got them thinking about death panels too).
However, the economy needs some attention too in order for the nominee to win delegates for the nomination.
Add to this that all three GOP candidates—oh, and The Nut too—have similar plans to correct the economy plus Rick has an outstanding record on national security.
So Rick or Mitt take your pick.