My two favorite news topics in the world are (1) politics and (2) Jamie Lynn Spears. And this Sarah Palin Saga is just a once-in-a-lifetime combination.
My prediction right now for the chances of her withdrawing is: 40%. I believe that if one more big revalation happens, that goes up to 95%.
I don't need to rehash here why I put it so high, I think you are familiar with the details.