it???s playing out in the Grand Canyon State.And check back with the NewsHour online Monday for the return of our Political Checklist, with Christina Bellantoni, Judy Woodruff and Gwen.2012 LINE ITEMSThe New York Times??? Jim Rutenberg and Jeff Zeleny have some details on how Romney is readying for a prolonged battle, writing Sunday that ???his advisers are warning donors and other supporters to p