On what do you base that assumption? Palin as councilwoman, mayor and governor hasn't let the trappings of office affect her.
It's not the trappings of the office that's the problem[1]. It's the other people in the beltway. Mr. Newt got lost. Andrea Seastrand got lost.
Mr. Newt had a golden opportunity to reform our government to something closer to what it should be. The Contract with America had its flaws (don't get me started about term limits), but overall was absolutely going in the right direction.
The two single biggest reforms we could make right now are:
Before we can do that, most of the beltway will have to be purged and it isn't going to happen. You can't vote out of office unelected bureaucracy.
There are millions of them and only one of her and I deem her survival odds negligible.
[1] Unless you're as feeble minded as a Barak Obama.