 Donald Trump has elected Senator J.D. Vance of Ohio to be his running mate. White House correspondent Greg Cluxton reports. Waiting until the first day of the Republican National Convention here in Wisconsin, the former president announced Vance as his vice presidential pick. He's a 39-year-old lawmaker who's relatively new to national politics. A one-time Trump critic, Vance is now a staunch champion of the Make America Great Again agenda.