As a Republican Presidential candidate, or as a Presidential candidate from either party, Governor Palin will not win over everyone nationally, no one can.
We do know that while being the most powerful, hands on Governor in America, Palin earned unheard of, sustained, approval numbers ranging from 80% to 93%.
Those are numbers of an executive political leader that is a uniter, someone that wins over all peoples, of all races and political persuasions
And you also must - repeat MUST - recognize two issues. We have no idea from what AL demographic the 80% to 93% came from...and it was polled JUST in AL and well BEFORE her appearance on the national political stage. At the point in time these polls were being conducted, she was unknown - completely - in the lower 48.
Also...AS IT STANDS TODAY...Mrs. Palin has been (very much according to Alinski's RULE 12: Pick the target, freeze it, personalize it, and polarize it.") polarized. There are two Palin camps (in and of itself, that ought to tell you something); those who support her (in degrees varying from mild to white hot), and those who despise her (varying in the same degree) and both those measures are skewed toward the extremes. Further, those who hate her will not change....and those who love her will not change either.
For sure....there are few, if any, of the "I can take her or leave her" group....precious few.
And that, my FRiend, is called polarization.