 Fox News. I'm Gianna Jalosi. Former President Donald Trump tapping Ohio Senator J.D. Vance as his running mate. The 39-year-old rose to national fame with that 2016 memoir he wrote called Hillbilly Elegy, all about all the things he went through as a child growing up in a rural part of Ohio. He was elected to the Senate in 2022 and has become one of the biggest advocates of the former president's Make America Great Again agenda.