Yes, she's strikingly polarizing.

She's wildly popular among information challenged voters and those who prioritize culture war stuff above national security, economy, etc.  Not so much among anybody else - in fact a recent NBC poll says this:

"In addition, for the first time, more voters have a negative opinion of her than a positive one. In the survey, 47 percent view her negatively, versus 38 percent who see her in a positive light.

"That’s a striking shift since McCain chose Palin as his running mate in early September, when she held a 47 to 27 percent positive rating.

"Now, Palin’s qualifications to be president rank as voters’ top concern about McCain’s candidacy - ahead of continuing President Bush’s policies, enacting economic policies that only benefit the rich and keeping too high of a troop presence in Iraq"