That is really a stretch to interpret that when the focus of the rest of her statements revolves around a message she thinks the candidates should give and this “shake up” that is undefined other than to mean the field is not set. It is cryptic at best.
How exactly does someone jump into the GOP race at this late date when filing deadlines have come and gone?
The final decision for who the Republican candidate will be is made at the nominating convention.
They can't, and no further serious candidates will enter the race.
Palin has been saying this same thing for months, and she's been proven entirely incorrect. She is just wrong. She said she thought people would be coming and going on BOTH sides, and yet there is no real challenger to Hussein and other than Cain bumbling his way out of the race, there's been no more candidates "coming and going".
Palin is paid to say this stuff and offer her opinion, but at least on this specific issue (of new candidates joining the race late) she's been obviously wrong.