She will certainly campaign for the Republican nominee. Whether she takes the time out to campaign for him in the primary is a different question.
She is not vindictive. If he’s the nominee, she’ll be there for him.
However, if McCain were to have to retire to spending time with his attractive heiress wife, I’m sure she wouldn’t mind, either politically or personally.
Let’s hope the Republican nominee is JD Hayworth, if he wins, Sarah will campaign for him. She will campaign for whoever the nominee is, lets root for JD Hayworth!