All she has to do is be herself. and she will succeed.
Tina Fey is meaningless and insignificant
You are quite wrong there. The caricature of Palin created by Fey turned Palin into an unserious object of ridicule for many voters - including many Republicans - much the same way that Chevy Chase's bumbling depiction of Gerald Ford helped pave the way for Carter. You should not underestimate these pop culture influences.