 Special Report. Presidential nominee Donald Trump chooses a running mate. I'm Keith Peters. That running mate is Ohio Senator J.D. Vance, a late comer to the Trump campaign. Vance swept to national prominence with his best-selling memoir, Hillbilly Elegy. Vance was a vocal opponent of Trump during the 2016 presidential election, but changed his position, arguing he was proved wrong by Trump's performance in office.