VOA慢速英语:Clinton Wins in Nevada, Trump in South Carolina

diverse – adj. different from each other

convention – n. a large meeting of people who come to a place for usually several days to talk about their shared work or other interests or to make decisions as a group

upset – n. an occurrence in which a game, contest, etc., is won by a person or team that was expected to lose

challenge – v. to question the action or authority of (someone)