you can help children all around the world grow up strong, thanks to walgreens partnership with vitamin angels. when you get vitamins here... ...you change lives everywhere. donald trump, not the only republican candidate rising in the polls in the wake of last thursday's debate here on fox. renowned brain surgeon ben carson also climbed into fourth place as you can see there in iowa. >> that's right steve. where does the doctor go from here? he joins us now at the curvy couch. such an honor to have you here. you're surging in the polls. why, in your mind, is this happening in iowa?