“Just eight months after taking office, Mr. Christie is in demand by Republican candidates across the country, political consultants say, receiving many more invitations than he can accept. His appearances with Ms. Whitman are the first of many he has scheduled over the coming weeks, including events Thursday with Susana Martinez, the Republican candidate for governor of New Mexico, and a trip next week to Ohio.”

John Podhoretz: Sean Duffy, Christine O’Donnell, and how TV fame can make or break a candidate.