announcer: this is nbc nightly news with lester holt reporting tonight from the olympic summer games in rio. good evening from copacabana beach, one of the many competition sites for the games starting tomorrow here in rio. of course in this half of the world, it is mid-winter. even though we are just an hour ahead of u.s. eastern time, the sun has been down here time. think february in the states without the cold. we ll have more on the upcoming competition here later. but we want to start with a brand new snapshot of the race for president. a new nbc news/ wall street journal poll shows that hillary clinton has opened up a nine-point lead over donald trump. 47% to 38%. that s up from a five-point lead just before the republican convention. and comes as the trump campaign struggles again to regain its focus after a blurring wife. nbc s katy tur has details. reporter: tonight after his toughest week yet, donald trump is trying to turn the page. training on president
tonight, tale of a tape. donald trump and the video he claims he saw despite no evidence that it exists. a new firestorm amid new questions about how melania trump came to america. knife attack an american woman stabbed to death on a london street. a florida college professor s wife. five others wounded amid fears of terrorism. what investigators are now saying. major mob bust. dozens arrested on a laundry list of charges. and the americans to watch. some familiar faces, some new hoping to strike gold here in rio. plus matt lauer with michael phelps. why he says this the eve of the games. nightly news begins right now. announcer: this is nbc nightly news with lester holt reporting tonight from the olympic summer games in rio. good evening from copacabana beach, one of the many competition sites for the games starting tomorrow here in rio. in this half of the world, it is mid-winter. even though war u.s. eastern time, the sun has been down here for some time. thi
announcer: this is nbc nightly news with lester holt reporting tonight from the olympic summer games in rio. good evening from copacabana beach, one of the many competition sites for the games starting tomorrow here in rio. in this half of the world, it is mid-winter. even though we are just an hour ahead of u.s. eastern time, the sun has been down here for some time. think february in the states without the cold. we ll have much more on the upcoming competition here later. but we want to start with a snapshot of the race for president. a new nbc news/ wall street journal poll shows that hillary clinton has opened up a nine-point lead over donald trump. 47% to 38%. that s up from a five-point lead just before the republican convention. and comes as the trump campaign struggles again to regain its focus after a blurring series of controversies. the latest one now involving his wife. nbc s katy tur has details. reporter: tonight after his toughest week yet, donald trum
announcer: this is nbc nightly news with lester holt reporting tonight from the olympic summer games in rio. good evening from copacabana beach, one of the many competition sites for the games starting tomorrow here in rio. in this half of the world, it is mid-winter. even though we are just an hour ahead of u.s. eastern time, the sun for some time. think february in the states without the cold. we ll have much more on the upcoming competition here later. but we want to start with a snapshot of the race for president. a new nbc news/ wall street journal poll shows that hillary clinton has opened up a nine-point lead over donald trump. 47% to 38%. that s up from a five-point lead just before the republican convention. and comes as the trump campaign struggles again to regain its focus after a blurring series of nbc s katy tur has details. reporter: tonight after his toughest week yet, donald trump is trying to turn the page. training on president obama over a $400 mil
announcer: this is nbc nightly news with lester holt reporting tonight from the olympic summer games in rio. good evening from copacabana beach, one of the many competition sites for the games starting tomorrow here in rio. in this half of the world, it is mid-winter. even though we are just an hour ahead of u.s. eastern time, the sun think february in the states without the cold. we ll have much more on the upcoming competition here later. but we want to start with a snapshot of the race for president. a new nbc news/ wall street journal poll shows that hillary clinton has opened up a nine-point lead over donald trump. 47% to 38%. that s up from a five-point lead just before the republican convention. and comes as the trump campaign struggles again to regain its focus after a blurring series of controversies. the latest one now details. reporter: tonight after his toughest week yet, donald trump is trying to turn the page. training on president obama over a $400 mil