 Pennsylvania rally and the gunman Thomas Crooks from ABC's Jay O'Brien. Authorities now investigating whether Crooks used a drone to survey the rally location prior to the shooting. A comprehensive timeline reviewed by ABC News found law enforcement first spotted the shooter at least an hour before he opened fire. ABC's Jay O'Brien in Grand Rapids. House and Senate Democratic leaders and former House Speaker Pelosi telling President Biden if he stays in the race, Democrats will lose congressional seats. That's from sources to ABC News.