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Sitka0230, I don't think any poster is trying to defend Palin. thatswhatsup wants valid grounds for attacking her and is correct. Attacking Palin on weak grounds could easily backfire.
You might be interested to see what Snopes.com has to say about Palin's alleged book-banning. You should read the whole thing, not just the first part.
There are nuances here. Palin inquiring about whether she can get books banned is one thing; actually trying to ban books is quite another.
Democrats can validly attack Palin on the Bridge to Nowhere; on being a right-to-life extremist; maybe on "Troopergate"; and perhaps on some other issues. Democrats can also attack her as lacking background and experience with most national and international issues. They can also point out she raised taxes on oil companies, which is fine by me, but not to most Republicans.
I don't think it wise to try to smear Palin on thin evidence; that's the sort of thing Republicans do.