christian conservative reality tv star jim bob duggar who's driving the bus across iowa. he backed huckabee in '08. he's urging evangelical voters to back santorum now. >> a proven track record, a christian conservative that has always stood for what's right. >> the chuck truck! >> reporter: santorum doesn't ride in the bus. does he his campaigning in a pickup truck. a better fit for santorum's down to earth pitch. jim acosta, cnn, boone, iowa. let's dig deeper into santorum's surge. joining me is dana lash, st. louis tea party organizer and editor and chief, ari fleischer and ball begala who joins me in des moines. the santorum surge, how surprising is it to? what do you make of? >> it's stunning. seven front-runners in iowa. three aren't in the race