Interesting news. I believe the most solid assumption one could draw from this is she doesn't think she has a home in the Republican Party anymore. Depending on what she does with this realization, it could have far ranging implications for the presidential nominees in terms of endorsements and the Republican Party in terms of grass roots numbers and dollars.
I believe a Romney victory would actually be worse for the Republican Party than would an Obama victory. I’m certain it would be worse for America, that they would be taken down a liberal road thinking they had chosen something different.
If Palin leaves the Republican Party, then all bets are off as to what she do if Romney wins the nomination. JMHO.