 Live from NPR News in Washington, I'm Shea Stevens. Ohio U.S. Senator J.D. Vance has been nominated as former President Donald Trump's running mate. As NPR's Ben Giles reports, Vance is a 2020 election denier who's already sown doubts about the upcoming presidential vote. In a February interview with ABC News, Vance reiterated his past statements that the 2020 election was stolen from Trump.