First On TVNewser: PBS' Gwen Ifill has broken her ankle after tripping and falling down stairs at her home last night, a NewsHour insider tells TVNewser. We're told Ifill had been walking up a staircase, carrying research related to her moderating duties at Thursday's Vice Presidential debate in St. Louis, when she took a wrong step. We are also told the show will go on: Ifill is planning to travel to Missouri for the big event.