alk about campaign trail déjà vu. As hundreds of bundled-up supporters gathered around him on a freezing January day, Rick Santorum towered over a lectern and rallied his troops. Aides pecking at smartphones lined the perimeter of the hotel conference room. An army of young children scurried across the floor. Volunteers collected email addresses and phone numbers at a fold-up table near the door. The people, the “candidate” — even the weather — gave the event a presidential primary campaign feel. But this scene played out in the Capitol Hill Hyatt in Washington, not a Sheraton in West Des Moines...