Three things to watch for in JD Vance's convention speech

Ohio Senator JD Vance, Donald Trump's newly minted running mate, will make his national debut on Wednesday as he delivers a prime-time address on the third day of the Republican National Convention in Milwaukee.

At 39, the junior senator and former venture capitalist is the first millennial to join a major party ticket, a youthful contrast to the 78-year-old Trump and the 81-year-old incumbent president, Joe Biden.

As Trump's running mate, Mr Vance is an early favourite for the party's 2028 Republican presidential nomination, but he remains politically unknown to most Americans and many in the party.

Donald Trump Jr, the former president's son and a close friend of Mr Vance, is expected to speak before Mr Vance's wife, Usha Chilukuri Vance, introduces the Republican vice-presidential nominee. As Mr Vance steps into the national spotlight, here are three things to look out for in his speech.