Watch Live: RNC Day 3 will feature JD Vance's first speech as VP nominee

Sen. JD Vance is set to make his first speech as the Republican vice-presidential nominee on Wednesday, the third night of the Republican National Convention, with the night expected to focus on foreign policy. 

Vance's speech, the final one of the night, will be eagerly watched by Republicans, given his recent breakout on the national scene. He is only 39 years old and was only first elected to the Senate in 2022. His 2016 book, "Hillbilly Elegy," shot to the top of the Amazon bestseller list this week when former President Donald Trump announced his selection. 

Vance's worldview, expressed through his Senate votes and speeches, has come into focus since his selection. In May, he told "Face the Nation" that the U.S. "could learn from" some of far-right Hungarian Prime Minister Viktor Orbán's controversial policies, including how to eliminate what he views as a left-wing bias at American universities. And at the Munich Security Conference earlier this year, Vance said it wouldn't be realistic for the U.S. to continue providing the same level of assistance to Ukraine moving forward.