 From the ABC News desk, a first-term Ohio Senator J.D. Vance last night accepted his party's vice presidential nomination, promising to do what he can to propel Donald Trump back to the White House. My name is J.D. Vance. Its mission was to connect with Republicans in the convention hall and Americans at home who are unfamiliar with them. Nielsen estimates that nearly 15 million people viewed at least part of the convention second night. Wednesday's numbers are still being compiled.