with scott pelley. >> dubois: good evening. scott it off tonight. i'm maurice dubois. donald trump is coming to the end of the worst week of his campaign. national polls show hillary clinton has opened a seven-point lead. have a look at the end of the conventions they were just about tied. in just one week, she's up, he's down after one misstep after another. now, keep in mind the election is a state-by-state battle for be decided in these 11 states that could go either way. two are on trump's schedule today. here's dean reynolds. >> reporter: as a chaotic week of political blunders and sagging poll numbers drew to a close, donald trump patted himself on the back. >> i've been told by so many people that know me-- under pressure, donald, that's when you do the best. >> reporter: he was in iowa this afternoon and will be in states whose republican primaries ted cruz won this year. so trump has work to do. >> and if you don't like me, that's okay. vote for pence because it's the same thing. >> reporter: but if today is any measure, he won't get much help. neither of iowa's republican senators joined him on the stage at his rally in des moines this afternoon. jonie ernst and chuck grassley were otherwise engaged. and worse in wisconsin where the state assembly's republican leader said he is embarrassed by his party's presidential nominee, and where other top g.o.p. officials will not be attending tonight's rally in green way. speaker paul ryan pron johnson, and scott walker found someplace else to be. ryan sounded almost resigned to a trump defeat reminding voters, presidency. if we fail to protect our majority in congress we could be handing hillary clinton a blank check." among all the accounts of a campaign in disarray, there are signs trump may be changing if only a bit. remember the video he has been talking about by days, the one he said was shot by iranians and shows a humiliating payment to the ayatollahs? >> and the plane coming in and the money coming off, i guess, today he was mistaken, that it showed hostages being released in geneva and no payments. and tonight in green bay, maurice, after weathering days of criticism from republicans for refusing to endorse paul ryan for re-election, donald trump is expected to do just that. >> dubois: dean reynolds in green bay tonight. hillary clinton says she did not mean to imply that f.b.i. director james comey vouches for the truth of her public statements about her e-mails. interview sunday with fox's chris wallace. here was clinton today. >> director comey had said that my answers in my f.b.i. interview were truthful. that's really the bottom line here. and i have said during the interview and in many other occasions over the past months that what i told the f.b.i., which he said was truthful, is consistent with what i have said publicly. so i may have s will try to clarify. >> dubois: clinton was endorsed bay by michael morell, the former number two at the sky. he said clinton is highly qualified to be commander in chief and will keep the nation safe. as for trump, morell said he is not only unqualified for the job but he may well pose a threat to our national security. until recently, morell was a national security contributor director of elections, and, anthony, big shift here in the polling numbers. what's behind it? >> well, you know, we've actually seen the numbers move away from donald trump over the the course of the week. we had in our poll hillary clinton up seven points on monday. some suggestion over the course of the week that lead got even bigger. on the democratic side, hillary clinton has consolidated her base. she's doing well with democrats, better with liberals than on the republican side, donald trump is doing with to match her with their bases. >> dubois: now, those are national numbers. we know the election is all about the states. what are the bagstates showing us? >> right. we identify 11 battleground states that will really decide this election, places like wisconsin. what we have seen over the last week is in those places, too, the polls are starting to shift toward hillary clinton. but there's some indications that even reliably republican competitive, and that would force him to start defending reliably republican territory, too. >> dubois: now, to those who are tempted to call the election here in august, you say? >> nothing, maurice, is permanent in august. >> dubois: another anthony salvanto. thanks so much. >> thank you. >> dubois: some other numbers that could figure into the presidential election. the government reported today that the economy created 255,000 jobs in july, the second straight month of steady at 4.9%. that news gave wall street a boost. the dow rose 191 points. there is tension in chicago following the release today of videos that show the moments before and after police fatally shot an unarmed black suspect. jericka duncan is following this, and we caution you, some of what you are about to see and hear is graphic. >> reporter: within seconds of jaguar... ( sirens ) ( gunfire ) >> reporter: police fired more than a dozen shots at the car 18-year-old paul o'neal was driving. o'neal sped off and rammed into a police car. o'neal then fled on foot. after a short chase, he was shot in the back, but the fatal shooting was not captured on any camera, only the aftermath. >> put your hands behind your ( bleep ). >> they shot at us, too, right? >> reporter: officers believed o'neal was firing at them, but no gun was ever recovered on o'neal or in the car. michael oppenheimer represents o'neal's family. >> these police officers decided to play judge, jury, and executioner. >> reporter: the video was made public eight days after the incident, a far cry from the 14 video of officer jason van dyke shooting and killing 17-year-old laquan mcdonald. the officer who said on video he thought he shot o'neal knew early on there would be trouble. >> the police out here acting reckless. >> reporter: chicago police superintendent eddie johnson tried to have a news conference outside police headquarters but he was shouted down by protesters. >> he was down and started shooting. >> reporter: three of the officers involved in the shooting have been placed on administrative leave. we reached out to those officers for comment but got no reply. maurice, the superintendent, the police chief here in chicago, said it appears those officers may have violate a new policy banning officers from shooting at moving vehicles. >> dubois: jericka duncan for us in chicago. dallas is another city where the police and the black community have had a troubled in part to a call to action after the murders of five officers last month. here's omar villafranca. >> reporter: the attack shocked the nation, a lone gunman killed five officers in downtown dallas after a protest march and sparked a fiery response from dallas police chief david brown. >> serve your communities be. don't be a part of the problem. we're hg. get off that protest line and put an application in. >> reporter: you know the area. >> yeah, i do, i know it very well. >> jaiston sawyer took chief brown's call to service to heart. the former navy military police officer now wants to join the police department. what was your reaction when you heard him say that? >> i felt like he was directing that towards me because i am one of the guys that, when i see police brutality or anything, kind of pointing the finger and do something besides pointing the finger. >> reporter: in the weeks since the attack, the police department received an overwhelming response. 467 people have applied to join. that's an almost 250% increase in applications compared to the the previous month. sergeant george aranda heads up recruiting for dallas police. what do you tell the new recruit who are coming in? >> heart. check your h being a police officer, being a servant, it's not for everybody. you have to be willing, at any given moment, to put your life on the line for a complete stranger that you've never met before. >> reporter: sawyer wants to serve the neighborhoods where he grew up, to help build trust between cops and his community. >> i've made plenty of facebook posts and they've never gone anywhere besides a couple of likes and a couple of shares. so i believe actually going out there and being the difference is what we really need. to three months. maurice, after that, it will be another year before they're able to go out and patrol the streets. >> dubois: omar villafranca in dallas tonight. after a slow start, the u.s. is taking in more refugees from war-torn syria. today, the state department said 8,000 have now been resettled in this country, and the u.s. is on track to meet president obama's goal of admitting 10,000 by october. it is opening night for the the runup was anything but smooth with concerns about zika, pollution, and a doping scandal. some in rio wish the olympics had gone to another city. ben tracy is there. >> reporter: when the olympic torch reached rio's copacabana beach today, thousands of protesters blocked its path. they're upset about the $12 billion being spent on the olympics in a city deep in recession. demonstrators have tried to douse the olympic flame and attack it. police have used rubber bullets and stun grenades on the crowds. at the stadium hosting the opening ceremony, the fireworks have been given a practice run. swimmer michael phelpss, the most decorated olympic ever, will carry the flag for the u.s. team. the show's director fer mannedo morales, says the production will be honest about some of brazil's problems. >> we're not hiding because everybody knows that very-- still very big social issue in brazil, rich people and very poor people. >> reporter: a recent survey found 63% of brazilians think hosting the olympics is doing more harm than good. only 16% are enthusiastic. >> people have seen how many of the promises associated to these games aren't fulfilled. >> reporter: journalist julianna barboza wrote a book about how the games failed to make good on promises, such as cleaning up rio's notoriously there, do you think, that the water issue never got resolved? >> oh, it's huge. this is one of the promises that if it had been carried out would have significantly impacted for the better the lives of millions of people. so the disappointment runs pretty deep. >> reporter: despite all of that, brazilians love a party, and they are definitely having one here in rio tonight. the only disappointment you hear in this crowd is that brazilian able to light the could ron tonight and that's because he says he's in poor health. >> dubois: coming up next on the cbs evening news, fear of birth defects grows in florida's zika zone. and later, some unwelcome visitors just ruined a whole lot of weekend plans. isn't it time to let the real you shine through? introducing otezla (apremilast). it's a pill that treats plaque psoriasis differently. with otezla, 75% clearer skin is achievable after just 4 months, with reduced redness, thickness, and scaliness of plaques. and the otezla prescribing information has no requirement for routine lab monitoring. don't take otezla if you are allergic to any of its ingredients. otezla may increase the risk of depression. tell your doctor if you have a history of depression or suicidal thoughts, or if these feelings develop. some people taking otezla reported weight loss. and may stop treatment. side effects may include diarrhea, nausea, upper respiratory tract infection, and headache. tell your doctor about all the medicines you take, and if you're pregnant or planning to be. ask your dermatologist about otezla today. otezla. show more of you. put some distance between you and temptation with... ...meta appetite control. what super poligrip does for me is it keeps the food out. before those little pieces would get in between my dentures and my gum and it was uncomfortable. just a few dabs is clinically proven to seal out more food particles. super poligrip is part of my life now. the ford freedom sales event is on! our biggest event of the year just got better! ? 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>> as she'll tell you she has me wrapped around her finger. >> reporter: her foal was born and he named him m.j.b. got faith, for the faith she instantly had in him. >> i really love him. he's super soft, too. >> reporter: but that quick bond posed a real problem for this pusho thought once he explained to his daughter that her horse could never race, that it was a runt from poor breeding stock, she would just agree to sell it. >> she's like, "there's no price, daddy." so i'm talking to my wife, and i'm like, "we've really got ourselves in a mess here and i don't know how we're going to get out of this." so we staked him to the races. >> reporter: this horse that doesn't belong in the races. >> the horse i thought we should have gotten rid of already. >> reporter: brian was stuck, committed to boarding and all long shots. and this is not a wealthy family. brian runs a small logistics company, and ohio racing, which is harness-style racing, is a $900 million-a-year industry. >> i want to see him go fast. >> reporter: m.j.b. got faith was so slow he barely even qualified to compete, but then somehow, some way, won his first race, his second, third, and fourth. qualifying him for the state championship held in columbus, >> i said, "baby, if you finish third, you should be so thankful." she goes, "daddy, if he finishes last, i'm going to be thankful but he's gonna win." >> reporter: and so it was. >> come on, m.j.b.! >> reporter: that this little horse with no pedigree, it this pet with no reason for being here beyond the blind faith of a >> she said, "dad, i told you. you gotta have faith." >> reporter: breana took home $100,000 that day. she gave half to charity and plans to put other half toward buying a farm. >> i just want to have a farm and be able to go walk out my back door and see him. >> reporter: since we first told this story last year, things have only gotten better for breana. she got a national horse racing award and book and movie deals are in the works. interestingly, her dad now has a race horse, most-unusual name. >> steve hartman owned by brian carsey-- >> reporter: perhaps because of that poor choice, brian has yet to win a single race. >> fourth is steve hartman. >> reporter: hopefully, his daughter will let him live on her farm. steve hartman, the person, "on the road" in connorsville, indiana. >> dubois: and that is the cbs evening news. for scott pelley, i'm maurice dubois. thanks so much for joining us. "the insider" tracking the biggest stories making news today. >> number one, michael phelps admits to suicidal thoughts. >> mornings waking up not wanting to be alive. there were thoughts like how would i do it. olympian in history defeated the darkness as we break down rio's opening ceremony by the numbers. >> 10500 athletes competing in rio. >> then suicide squad comes under fire. is will's action movie too viol >> are you worried some people are going to take it to extreme? >> it's absolutely a concern. >> and number three. justin timberlake and jena rodriguez can't stop the feeling. >> snapping.

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