The reason she has made such a big splash is that in a political culture filled with bile, resentment, anger and depravity, it is uncanny and confusing to see a politician come onto the scene who is simply good and strong and has no demons. You know she is this sort of person when you see her give a speech.
If you are the kind of person whose interface with the political sphere is burdened by inner demons and resentments, then when you see a heart like Palin's on the national political scene she causes confusion and anger in you. People of Palin's moral fiber have this effect on bullies and people hypnotized by bullying. Such people are maddened by the John Wayne type who doesn't blink and who, lacking inner demons, cannot be manipulated by those whose modus operandi is to let their own inner demons summon into action the demons of others.
If you do not labor under the burden of demons, then you are simply glad to see Palin enter the scene.
Getting down to brass tacks, let's notice that Palin is the only candidate on either ticket who has either:
1. Been tested for executive prowess.
2. Passed the test.
Moreover, Palin has done both. In addition, she is a clean-up-the-mess reformer.