REPUBLICAN NATIONAL CONVENTION.

DAVID MUIR (ABC NEWS) (Off-camera) A live picture of the convention hall, a packed hall here in Milwaukee, and a night of many headlines already made as that camera trained on the ABC News booth, Martha, I can always see that white suit right there in the booth. Linsey Davis, John Karl here in the broadcast booth with me. The entire team here in the hall. Good evening, everyone, from the Republican National Convention here in Milwaukee and already tonight, a night of unexpected and some would say improbable moments. Donald Trump making an appearance now for the second night in a row, it's some of the speakers, though, getting a lot of the attention here tonight. [ABSTRACT FROM PUBLISHER]