Sarah along with every conservative political pundit, have said from the beginning they would be 100% behind the nominee whomever that was. In my opinion that was very helpful to Romney, because it put exactly zero pressure on the DgOPe to change their collective minds.
All conservative republicans are going to support Romney, including Palin, Cain, Perry, Gingrich, etc.
Aside from that, we seem to not want to see that Romney is running on a completey conservative platform.