Nightly news begins right now. From nbc news World Headquarters in new york, this is nnbc nightly news with lester holt. Good evening. With his campaign losing ground and his party locked in a civil war over whether to even support him, donald trump has proclaimed the shackles are off. The republican nominee lashing out today and making it clear that any republican who isnt with him will pay a price. A brandnew nbc news wall street journal poll taken after sundays debate with a ninepoint lead over trump, 4637, in a fourway matchup. To get back on track, trump appears to be reverting to the combative unscripted candidate we saw in the primaries. Already today, demonstrating that nothing is off limits. Nbcs Hallie Jackson has details. Reporter throwing red meat to his supporters, a donald trump tweet storm, hitting fellow republicans and Hillary Clinton. So nice that the shackles have been taken off me, trump apparently trump chained down. Theyre rapists. Hes not a war hero. You got to see this guy, oh, i dont know what i said. Reporter a Senior Adviser said a new campaign ad out tonight previews the unshackled final four weeks. Hillary clinton doesnt have the fortitude, strength, or stamina to lead in our world. Reporter the sharper attacks on clinton and her husband as a sign of Steve Bannons snuns. Trumps combine ceo part of breitbart. Some supporters feeding off it. One woman today calling for revolt. If Hillary Clinton gets in, i myself am ready for a revolution. Dont say that. Reporter mike pence trying to tamp that down. The impact on republicans the fact is, i cant seriously, i cannot vote for either trumps sexually aggressive comments surfaced friday, troubling even one of his highest profile supporters, new jersey governor chris christie. Ive known him for a long time. And im really upset by what i heart, but in the end, this election is about bigger issues than just that. So at this point, i still support him. Reporter our new polling shows after sundays debate, more republicans now want downballot candidates to support the top of the ticket, so does in an exclusive interview with nbcs kelly odonnell. Is the party in crisis . I think i think the countrys in a lot of trouble right now. But republicans fighting republicans i dont find myself thinking a whole lot right now about party. I find myself and donald trump finds himself thinking mostly about america. Reporter tonight trumps expected to target not other republicans like he did online, but Hillary Clinton, and among other topics, bottom line, a top aide tells me, buckle up. Lester . Hallie jackson, thank you. Hillary clinton meanwhile is facing new and potentially embarrassing revelations after wikileaks exposed more email from her campaign chairman. But clinton got backup on al gore, reminding key voters how florida cost him the presidency in 2000. We get more from nbcs andrea mitchell. Reporter tonight former Vice President with Hillary Clinton for the first time, reminding voters how florida cost him the presidency in 2000. Your vote really, really, really counts. Reporter both targeting millenials and former Bernie Sanders supporters passionate about climate change. We cannot risk putting a climate denier in the white house. The choice in this election is extremely clear. Hillary clinton will make solving the Climate Crisis a top national priority. Of it happening as a new batch of hacked emails from Clinton Campaign chair john podesta, released by wikileaks and not independently verified by nbc news, show clinton was reluctant to adopt one of gores biggest goals, stopping the keystone pipeline. Clinton first signaling support. It is not yet signed off on it, but we are inclined to do so. Reporter but in 2015, with sanders rising in the polls, clinton aides exchanged a flurry of emails about how to change her position manufactured and very political. Weeks later responding to a voters question, she switched her position. Therefore, i oppose it. Reporter another email showing contact between the Clinton Campaign and the Justice Department. Clinton press secretary brian fallon writing, he was in touch with the Justice Department where he once worked, regarding lawsuits over clintons emails. Quote, doj folks informed me theres a status hearing in the case. Again that Hillary Clinton is one disclosure away from potentially having this race flip flop once again. Reporter the clinton team blaming the leaked emails on what u. S. Intelligence says is russian hacking. Donald trump who has had Intelligence Briefings on russias role, but denied it in sundays debate declaring tonight clinton getting attention for something she said to the new york times. Shes said that before. The campaign telling us, its partly tongue in cheek, but also serious. She does think that donald trump is unlike any other republican nominee. Nbcs andrea mitchell, thank you. Now to the emergency situation unfolding this evening from the carolina coast to the caribbean. Hurricane matthew is long gone, but its damage is lasting. In haiti, hundreds are dead and aid is only just now beginning to reach so many left devastated. Here in the u. S. , its a race against time to rising flood waters. As nbcs Miguel Almaguer shows us from high above the flood zone. Lester, good evening from just a few hundred feet above the flood stage, where they call this an unfolding disaster. At least 30 people have already been killed in this storm. A death toll many fear will rise. Tonight the u. S. Coast guard is running out of time. There are teams deployed, desperately stranded by the rising floods. Plucking 17 to safety. You can see the water flowing through buildings and houses and all the cars that are up to their roofs. You can just tell how much damage is going on down there. Reporter today search teams reached elderly residents from this highrise. The weak, fragile, disabled, carried to safety. Awful. Were going to keep an eye on it. Awful. Reporter in a town drawning in a river that burst its banks, a texas man watching spotted his Twin Brothers house and tweeted a plea to help his stranded sibling. I seen a boat in the faroff distance, so i flew it over there. Reporter the drone operator alerted rescuers. Reporter a team came swooping in, ferrying Chris Williams and his dog to safety. Its incredible that it worked. Reporter its hardly the only town in North Carolina in trouble. That c the network of rising rivers has everyone on high alert. The lumber river at a record high, pouring into surrounding communities. Tina kelly left florida to escape matthews rain and wind. But in North Carolina, she became a victim of the storms flood. We have been held up over here at a hotel with no power, no water, no food. Reporter tonight shes trying to get back home. Grateful for what she news, lumberton, North Carolina. Reporter this is Gabe Gutierrez in haitis southern peninsula where matthews wrath is allconsuming. Homes are shredded, food is scarce. This man tells us he had to race up the side of a mountain to escape the rising flood waters. The u. N. Estimates more than a Million People like him are now in need of humanitarian aid after the category 4 hurricane ripped through here with 145mileanhour winds. This church before the this aerial picture from digital globe taken right after. I lost everything, except my 6monthold daughter, this woman says. Haitian authorities confirm almost 500 people have been killed, but one tally by reuters puts the death toll at over a thousand. Theres destruction as far as the eye can see. Aid is slowly trickling into in country, but not fast enough for those in the most devastated areas. Holly works with care, one of the largest aid organizations now on jeremie. Its going to be a long road. Reporter nbcs dr. John torres visited a clinic where the spread of cholera is now the biggest fear. Theres been 279 cases in the whole country, with ten deaths. Reporter tonight the scale of destruction is staggering and the people here have an urgent plea. Help. Gabe gutierrez, nbc news, jeremie, new fallout tonight over reports of exploding cell phones. Samsung said it will no longer make or sell its galaxy note 7 after the original and the replacement would smoke and catch fire. All of it coming as the phone wars went to the Supreme Court tonight. Our justice correspondent Pete Williams has all the details. Reporter galaxy note 7 owners cant get rid of them fast something to be a glitch. But this is really outrageous. Reporter after struggling to fix the problem, the Worlds Largest smartphone maker today gave up, halting all production of the note 7. Users worldwide said the phone would burst into flames. Replacements had the same problem. Daniel frank said his caught fire in a restaurant. I think about my 8yearold daughter and say, play with this. Reporter the only bright spot for the Supreme Court in a long running battle with the worlds other smartphone giant. Apple said smart phones used to be clunky until 2007 when the iphone captivated the market with a sleek design. Black translucent screen with rounded corners and a grid of colorful icons for applications. Apple sued samsung for that design and said its entitled to all 400 million. Samsungs lawyer said a smartphone isnt like a scarf, where a design is everything. We are talking about products that have 250,000 pat entdented features. Reporter but justices seemed prepared to rule samsung would have to pay something. Pete williams, nbc news, at the Supreme Court. Federal prosecutors said they will file criminal contempt against controversial arizona sheriff joe arpaio. Arpaio has been a lightning rod in the fight over illegal immigration. Had previously been told to stop those patrols amid allegations of racial profiling. Late details on this from nbcs gadi schwartz. Reporter a crowd erupting into cheers outside a phoenix courthouse after hearing federal prosecutors would be charging the controversial and selfproclaimed toughest sheriff in for contempt of court. The charges stemming from a racial profiling case where a judge had ordered arpaio to stop targeting latinos during immigration sweeps. Arpaio admitted his department continued the roundups, but said he didnt violate the judges orders intentionally. The judge disagreed, saying arpaio disoboyed because he thought it could help him get reelected. They found misconduct, dishonesty, and bad faith. Our position is and always has been that there was no willful violation of the judges order. Reporter arpaio has made a name for himself by forcing prisoners to wear pink and live in canvas tents in tripledigit temperatures. So far racial profiling cases against him have cost arizona taxpayers nearly 50 million. Todays announcement of criminal charges coming the day after early voting starts in for sheriff. Gadi schwartz, nbc news. Theres a lot more to tell you about tonight. Ahead, new warning about a popular supplement taken by millions of americans. Why it could pose a serious risk to your heart. Serious risk to your heart. R lower back pain sufferers, the search for relief often leads. Here. Here. Or here. Today, theres a new option. Introducing drugfree aleve direct therapy. A tens device with high intensity power that uses technology once only available in doctors offices. And helps you get back to things like. This. This. Or this. And back to being yourself. Introducing new aleve direct therapy. Esses. Is that they contour to your body. It keeps us comfortable and asleep at night. Change your sleep, change your life. Change to tempurpedic. 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And yet kelly ayotte continues to play political games instead of making New Hampshire safer. When she has the chance to strengthen background checks, she voted no, backing the Washington Gun lobby instead. Getting guns, ayotte flip flopped. Kelly ayottes become another typical washington politician and that puts us all at risk. Narrator independence usa pac is responsible for the content of this advertising. Were back with Important Health news out tonight that will likely be of interest to millions of americans, men and women who take calcium supplements may raise the risk of heart disease. But eating foods rich in calcium may have the opposite effect. Heres nbcs tom costello. Reporter tonight a warning for the more than 40 of american men and women who take calcium supplements. In a tenyear study involving 2,700 people, half of them women, researchers at Johns Hopkins medicine found those who took supplements were 22 more likely to have kalsup in sign of heart disease. But those adults who got calcium from their diet had no heart disease. You think this is a serious risk . I do. Reporter the doctor said a supplement causes calcium levels to surge. And with that excess calcium in your blood, may deposit into soft reporter 46yearold christina is concerned about bone loss and takes a daily supplement. I believe that the proper amount of calcium will help to not only prevent osteoporosis, but also prevent me from fracturing a bone if i should fall. Reporter but for most women, the supplement may not be necessary. Researchers say the typical adult needs about a thousand milligrams of kalssium a day. Women over 50 and men over 70, milligrams a day. The supplement industry tells nbc news the product is safe and women should get their daily calcium through a combination of diet and supplements. But tonight researchers say a pill is usually no substitute for real food. Tom costello, nbc news, baltimore. 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Mindful of the current Scotland Yard has gotten multiple reports of socalled killer clowns. I thought i was actually going to die. Reporter in australia, police are patrolling schools. Tensions growing by the day as social media explodes with clone photos and threats. In detroit, a clown was spotted clinging to the back of a bus. In an 11yearold in minnesota said he was chased by a clown carrying a butcher knife. Three teens were picked up there. Reporter while sightings are copycat hoaxes, psychologists say they ar