Eve of super tuesday, one of the biggest days yet in the president ial contest, in an election season filled with leadshaking moments, spray tans. The kkk and ear piece malfunctions are abeing mott topics driving the conversation about the republican race. Outside of texas, donald trump seems poised to score some very big wins in tomorrows primary contest despite some conflicting and curious answers to a question thats left him exposed over very sensitive racial ground. Nbcs katy tur starts our coverage tonight. Reporter tensions high in radford, virginia. Secret service body slamming a time photographer who tried to leave the campaign mandated press pen. Trump on edge, too. This morning blaming his refusal to condition dem the kkk and david duke in a cnn interview on a bad ear piece. Im sitting in a house in florida with a very bad earpiece that they gave me, and you could hardly here what he w w saying. Reporter a complaint he did not interview. I dont know anything about david duke, okay. I dont know anything about what youre even talking about with White Supremacy or whitesupremacists, soo i dont know. Reporter trump disavowed the clines infamous former leader last week. David duke and robo calls, White Supremicist movement supporting you. Any words for that . I i disavow it and didnt know it. Reporter trump cited the onetime grand wizard as the reason he wouldnt run in the Reform Party Ticket in 2000. David duke just joined, a got, a racist, a problem, not exactly the people you want in your party. Reporter since he kicked off his Campaign Trump has been repeatedly accused of stoking racial fears, first with mexicans and then africans and muslims. Donald trump is doing his best to appeal to the constituency of david duke and people like david duke while pretending he heegs not doing that very thing. He should be more of a statesman. It wouldnt cost him anything with his supporters, and it hats chance of republicans into his fold. Reporter this weekend trump championed the endorsement of alabama senator jeff sessions, the first u. S. Senator to join trump, this as marco rubio got in the mud. How can a person with the worst spray tan in america . You know what they say with men with small hands. You cant trust them. Reporter hours from super tuesday and time is running out for trumps competitors to make their case. I will go to all 50 states and every territory. Y. I will continue to speak out until i literally have no voice left. I will go anywhere to speak to anyone before i let a con artist get ahold. Republican party. Donald trump represents everything youre mad about washington, the dealmaking that doesnt stand with the working men and women. Reporter despite it all, trump is poised to win big. Mexico, everybody talks reporter assou can hear, d dald trump is on s sge here in georgia behind me. This is another controversy is brewing. Both rubio and cruz calling on trump to press the new york transcript of an offtherecord meeting after buzzfeed reported that trump may have expressed flexibility on his hardline immigration plan. Lester . Katy tur tonight, thanks. As the trump train lls into super esday full of ststm, some Republican Leaders are now openly expressing deep concerns about the prospect of donald trump as the partys nominee. One gop senator even saying he wont support him, and as nbcs Andrea Mitchell reports, the anxiety has reached a fever pitch. We have a movement going on. This isnt normal. Reporter donald trump packing in thousands on the trail agaiai today, but behind the scenes nbc news has learned trump has many Top Republican officials scrambling, looking for a way to block him from getting the nomination. A lot of people who are worried donald trump cant win in november. New poll out today that shows that hes behind Hillary Clinton where in almost every other poll, virtually any other republican beats Hillary Clinton so theres concern there. Reporter adding to response on the ku klux klan, prompting this tweet from 2012 nominee mitt romney. A disqualifying and disgusting resesnse by real donald trump to the kkk. His coddling of repugnant bigotry is not in the character of america. Are we choosinging a president like American Idol . Is that the system and what kind of democracy will it produce . Theres a lot of people i think legitimately worried. Reporter one big concern for republicans, would trump at the top of the ticket, if he loses, take down with m 24 gop senatat candidates, and tonight the first republican senator to say he wont vote for trump if hes the nominee. Nebraskas ben sass. In a Facebook Post he wrote conservrvives will need t t find a third option other than trump. This is a guy who says things again and again that sound a lot more like Vladimir Putin than abraham lincoln. Reporter there are two key w wries amongng Many Republican officials if trump gets the nomination. First, if he wins in govern as a conservative . And, second, would he even get that far . If docrats are able to successfully attack his past statements and his business record. Lester . Andrea mitchell, thanks so much to talk about. Lets bring in our political director, the moderator of meet the press, chuck todd. Chuck, if trump does well tomorrow, what are the points in whichhhey can other republicans can stop him . The only way they can stop him within the party is to deny him the delegates he needs to get the nomination. To do that, he does well tomorrow night, then it becomes imperative that they defeat trump in march 15 in ohio meaning every other candidate other than john kasich decides to campaign there. Maybe rubio says ill let kasich go there and rubio haso win his home state of florida and maybe they find somebody else to rally around and beat him in illinois and north carolina. Thats the only way they can do it within the party, but if they dont succeed by march 15th, theres nothing they can do, cant deny the nomination so then its the thirdparty route. Ive heard rumors of finding a candidate, theres a Constitution Party out there that has ballot access. If they want to start a third partrt youd have to do it within the next couple of weeks to actually get ballot access, but this stuff is real, and it gets very real on march 16th if donald trump cononnues to ll. Havent eveve seen anything like it. Not since 1860 and the wigs. The Republican Party was born out of another conservative party the whigs breaking apart. Maybe history is truly repeating it self. Chuck todd, thank you. On the democratic side fresh off her landslide victory over Bernie Sanders in South CarolinaHillary Clinton is look ahead to super tuesday as an opportunity to pull away i i this race. Nbcs Kristen Welker is with the Clinton Campaign in virginia. Kristen kristen, what can you tell us. Reporter lester, good evening. Clinton Campaign Officials say they feel confident heeding into super tuesday after that big win in South Carolina, fueled largely by africanamerican support. Clinn hoping to build on that tomorrow. Senator sanders vowing does have a steep climb, particularly if you look at the numbers, lester. The official nbc news delegate count shows clinton with 519 delegates and sanders with 86. If you only take into account super delegates, typically Party Leaders who get to choose who they will support, clinton gets 428 to sanders 21, a 20field advantage. Clinton is u u with ads in all of the super tuesday states and sanders with ads in five of them, smaller, less diverse states like colorado and massachusetts. Still, sanders has a lot of cash on hand which means no matter what happens tomorrow that could allow him to stay in this race indefinitely. Lester . Kristen welker tonight, thank you. For manan of you the stations will be carrying the live hourlong editions of nightly news with all the results as they come in and special primetime coverage across the country starting at 10 00, p. M. Eastern time. T tre were terrifying moments school when police say a teenaged student opened fire hitting few students and injuring two others. Tonight the suspect is in custody as students and their parentsope with the aftermath. Nbcs blake mccoy now with details. Reporter it was in the cafeteria of Madison Junior Senior High School where Authorities Say a student opened firir on his classmate. One student managing to call 911 from a high school. Im at madison high school. Theres a shooting. Okay. Hes got a gun. He started shooting people. How many people did he shoot . Im not sure. He just pulled out his gun and started shooting. Reporter two students shot at lunchtime, two others injured in the chaos. The school put on lockdown asrantic parents raced from work. We had to get here. Had to get to him. Serious mindset and just trying to be quiet and keep everybody else around me safe. Reporter cool is in middletown, ohio, about an hour north of cincinnati. 14 and 15yearold boys, were flown by helicopter to the hospital. They are bh basically stable at this time. Reporter attention now turns to the accused shooter, a 14yearold male who police say tossed the handgun as he ran from the building. Hes been charged with two counts of attempted murder, a motive known at this time. Gag to be hard for everybody to get over this. Reporter class has been cancelled across the district tomorrow as parentsold their kids tight. Blble mccoy, nbcbc news. Late word that Sports Reporter erin andrews is on the stand tonight in her 75 million civil trial. Earlier in the day the man convicted of stalking andrews testified. He told the court h h he altered the peep hole on Andrews Hotel door and secretly filmed her. Now as nbcs Morgan Radford reports, its andrews turn. Reportete erin andrews s sll haunted by the video that she says has damaged her career. I feel so embarrassed and im so ashamed. Chance to look jurors, seven women and five men in the eye and ll her side of the story. My naked body was on the front page of the New York Post and they put bars over my body parts. My girlfriend is s calling me and telling me she was running around new york city throwing coffee on all the pains because she felt so bad. Reporter just hours earlier andrews left the courtroom as her stalker explained the sordid details of e day he secretly recorded her. I could hear the shower on in her room and i walked by. Reporter and Michael Barrett explained how he followed andrews to her Nashville Hotel room and altered the peep hole. I pulled the plug out and waited for the opportunity. Reporter was it your intent to hopefully get her without clothes on . Yes. Reporter her mother paula also testified today describing the embarrassment her daughter continues to face. Its a nightmare that doesnt stop. I just kept telling her its not your fault. Youre a vicity. Youve been youve reporter andrews devastated. Its so embarrassing. It was my private time. I never thought something would happen. I never thought a hotel would let somebody next to me without telling me. Reporter andrews says her entire life is different now and that this ordeal is always in the back of her mindnd erin says that she continues to be haunted on a daily basis, and as for barrett he lives in oregon and his Internet Activity is monitored by a patrol officer. Lester . Morgan radford, thank you. At the whihi house today a mememr of the elite s. E. A. L. Team 6 received the medal of honor and because missions are covert and highly classified we rarely see their names or see their faces. Today one stepford. Nbcs Jim Miklaszewski has the story of his incredible bravery. Reporter as a navy s. E. A. L. Senior chief ed buyers rarely emerges from the shadows and one of the silent warriors from special Operations Force that previously took down osama bin laden, but today in a rare appearance buyers was front and center at the white house, an american hero. In december 2012 the s. E. A. L. Ran a mission to rescue an american hostage joseph taken hostage by the taliban. As they approached the hideout gunfire exploded. It was pitch black and everything happens in a hostage rescue scenario happens really fast. Reporter petty officer nickless c c was first through the door and fatally wounded. Nick died, you know, a warriors death, died a true american hero. Reporter buyers was seconds behind and took out taliban shooter. He had a weapon about, you know, level, ready to shoot, and fortunately i was just quicker on the draw on that. Reporter buyers spotted the hostage on the floor and threw himself on top of the american. You were willing to take a bullet for that hostage . Thats our job, yes. Reporter buyers taliban fighter by the throat. Just gave it enough time for my teammates to come i ind get in position to take care of that threat. In times of war uncertainty, theres a special breed of warrior ready to answer our nations call. Reporter president obama presented buyerss with the medal of honor which he accepted not for himself but the entire s. E. A. L. Community. Its for the brotherhood, its for everything that we have sacrificed since 9 11 in defense of our country. Reporter Jim Miklaszewski, nbc news, the pentagon. Theres a lot more to tell you about as we continue on this monday night. Still ahead, losing sleep and gaining weight. More word on what could be fueling the junk food cravings. And rock the the oscar host toat body aches . What knee pain . What sore elbow . Advil liquigels make pain a distant memory nothing works faster stronger or longer what pain . Theres only one egg that just tastes better. With 10 times more vitamin e. And twice the omega 3s. Because why haveverdinary when you can have the best. Only egglands best. Better taste. Better nutrition. Better eggs. Our parents worked hard so that we could enjoy lifes simple pleasures. Now its our turn. Im doing the same for my family. Retirement and Life Insurance solutions from pacific life can help you otect what you love and grow your future with confidence. Pacific life. Helping generations of families achieve if youre one of the millions of people who would like to lose a few pounds a a are struggling, new Research Suggests part of the problem may be with how much sleep youre getting or not getting. Onethird of adults get less than six hours of sleep a night rather than the repgd seven to eight hours. It turns out the leses we sleep, the m me we crave food and not the foods that are good for us. As nbcs tom costello reports. Reporter they are two of americas biggest complaints, a few extra lbs arorod the mimisectionnd not enough sleep. I definitely dont get as much sleep as i would like to get. Some nights i do. I dont get as much sleep as i would like. As soon as i wake up i feel like im starving and all i want is food. Reporter new research from the university of chicago shows it may be part of a vicious cycle. The less sleep we get the more our produce produce a chemical in the blood that increases o o cravings. The same system triggered by marijuana. Cravings for the sweets, salty and fatty foods we snack on in the afternoons and evenings. Were actually eating more calories than needed for energy costs of being awake longer. Reporter previous studies have found when sleepdeprived adults got an extra hour and a half of sleep a night, the recommended eight hours, the cravings for junk food dropped. People who get less than six hours are at an increased risk of obesity. This dock getting 300 calories a day is two cookies in two weeks reporter justtwo weeks. Two weeks. Reporter best advice, go to bed and wake up at the same time every day and avoid eating anything in the two to three hours before going to sleep. If junk sleep leads to junk food which leads to obesity and moror junk sleep, breaking the cycle could be key. Tom costello, nbc news, washington. Were back in a moment with a gaspinducing moment for adults with anan advanced lung cacaer called squamous nonsmall cell, previously treated with platinumbased chemotherapy, its not every day something this big comes along. A chance to live longer with. Opdivo, nivolumab. Opdivo is the first and only immunotherapy fda approved based on a Clinical Trial demonstrating longer life. For these patients. In fact, opdivo significantly increased the chance of living longer versus chemotherapy. Opdivo is different. Opdivo can cause your immune system to attack normal organs and tissues in your body and affect how they work. This may happen any time during or after treatment has ended, and may become serious and lead to death. See your doctor right away if you experience new or worsening cough; chest pain; shortness of breath; diarrhea; severe stomach pain or tenderness; seve nausea or vomiting; extreme fatigue; constipation; excessive thirst or urine; swollen ankles; loss of appetite; rash; itching; headache; confusion; hallucinations; muscle or joint pain, or flushing as this may keep these problems from becoming more serious. These are not all the possible side effects of opdivo. Tell your doctor about all your medical conditions, including immune system problems, or if youve had an organ transplant, or lung, breathing, or liver problems. A chance to live longer. Ask your doctor if opdivovos right for you. Bristolmyers squibb thanks the patients and physicians who participated in the opdivo Clinical Trial. A heart attack doesnt care if you run everyday, or if f ure young or old. No matter who you are a heart attack can happen without warning. A bayer aspirin regimen can help prevent another one. Be sure to talk to your doctor before you begin an aspirin regimen. Bayer aspirin. Guys, its just the two of you. The setting is just right. Theres something in the air. But heres the thing about half of men over 40 have some degree of erectile dysfunction. Well, viagra helps guys with ed get and keep an erection. Ask your doctor if your heart is healthy enough for sex. Do not take viagra if you take nitrates for chest pain or adempas for pulmonary hypertension your Blood Pressure could drop to an unsafe level. To avoid longterm injury, seek immediate medical help for an erection lasting more than four hours. Stop taking viagra and call youruroctor right away if f u experience a sudden decrease or loss in vision or hearing. Ask your doctor. About viagra. The same cruise ship that had to turn back earlier this month after it was damaged in a Violent Storm had to cut a voyage shortrtet again today. Some guests on royal caribbeans anthem of the sea are experiencing norovirus symptoms and thats not why the company says its turning around. Royal s ss they are avoiding another severe storm looming in the forecast. There were gasps in the audience today at the Supreme Court when something happened that hasnt happened in ten years. For a decade justice ked a single question during oral arguments and that all changed today in a big way. He broke his silence asking ten questions during a case about gun rights that caue during the second week the court has heard arguments since the death of justice antonin scalia. Tonight we say goodbye to one of the all time great hollywood tough guys. Beloved character actor george kennedy, a force on screen f f nearly six decades has died. Kennedy won best supporting actor beside paul newman in 1967s cool hand luke. Decades later he would win laughs in a new generation of fans about he was cast against type in the naked gun series. Kennedy was 91 years old. When we come back, oscar host chris rocks takedown of the academys diversity ntroversy and how if you have postmenopausal osteoporosis and a high risk for fracture. I can tell you prolia is proven to help protect bones from fracture. But the real proof . Helped my bones get stronger. Are your bones getting stronger . Do not take prolia if you have low blood calcium, are pregnant, are allergrg to it, or take xgevava. Serious allergic reactions, such as low Blood Pressure; trouble breathing; throat tightness; face, lip, or tongue swelling; rash, itching or hives have happened in people taking prolia. Tell your doctor about dental problems, as severe jaw bone problems may happen, or new or unusual pain in your hip, groin or thigh, as unusual thigh bone fractures have occurred. Prolia can cause serious side effects, including low blood calcium, serious infections. Which could rereire hospitalization; skin problems; and severe bone, joint or muscle pain. Only prolia helps strengthen and protect bones with 2 shots a year. I have proof prolia works for me. Can it work for you . Ask your doctor about prolia today. This just got interesting. So why pause to take a pill . D why stop to find a bathroom . Cialis for daily use, is the only daily tablet approved to treat erectile dysfunction plus cialis treats the frustrating urinary symptoms of bph, like needing to go frereently, day or night. Tell your doctor about all your medical conditions and medicines, and ask if your heart is healthy enough for sex. Do not take cialis if you take nitrates for chest pain, or adempas for pulmonary hypertension, as it may cause an unsafe drop in Blood Pressure. Do not drink alcohol in excess. Side effects may include headache, upset stomach, delayed backache or muscle ache. To avoid longterm injury, get medical help right away for an erection lasting more than four hours. If you have any sudden decrease or loss in hearing or vision, or any symptoms of an allergic reaction, stop taking cialis and get medical help right away. Ask your doctor about cialis for daily use. Insurance coverage has expanded nationally and you may now be covered. Contact your health plan for the latest information. baseball on tv in background with Heart Failure, danger is always on the rise. Symptoms worsesebecause your heart t nt pumping well. water filling room within 5 years of getting diagnosed. But theres someththg you can do. Talk to your doctor about Heart Failure treatment options. Because the more you know, the more likely you are. dog whimpering to keep it pumping. Finally, last Nights Academy awards Program Still has people buzzing from Leonardo Dicaprios best actor win to spotlightht u uet for besticture and overshadowings the night the lack of any nominees of color and host chris rock took on the controversy early and often. Reporter amid the hollywoods biggest night a serious topic dominated the oscars. Otherwise known as the white peoples choice awards. Reporter from the moment chris rock took theetage he tackled hollywoods diversity controversy head on. Hollywood is sorority racist. Its like we like you, rhonda, but youre not a kappa. Reporter the tenminute opening monologue was part standup, part sermon. Im a danish girl. Reporter and the theme continued through the night. He came at it straight head on, and he said everything he wanted to say. There was a lot being asked of him to do and to still do comedy and he really did it. Repepter rock also took aim as will smith and Jada Pinkett Smith for boycotting the show saying the allwhite slate of acting nominees isnt the only thing thats unfair. Its also not fair that will was paid 20 million f f wild swild west okay. Times called it the first oscars in history that nakedly tried to do something other than hand out a bunch offold statues. Everybody kind of needed somebody who felt qualified to call out hollywoods problems and to put them in a proper context and also allow everybody to sort of laugh. Reporter ratings this year were down and in a few moments fell flat including a widely criticized joke as asian kids as accountants but on this night its the message from chris rockck black lives mamaer. Reporter that dominated the spotlight. Joe fryer, nbc news, los angeles. Before we say good night wwant to extend a big welcome to our viewers in raleigh dur hamm, north carolina. I was down there meeting our fans and wraltv that as of tonight becomes an nbc affiliate. So happy to be all of you as part of our nbc news family and proud totoe part of yours as well and hope to see you here every night. For now thats going im lester holt. Good evening everyone, im ron steele. And m amanda goooman. Thanks for joining us. A Winter Weather advisory is in effect for much of our viewing area. Lets go to storm track seven chief meteorologist Mark Schnackenberg now whos tracking this snow storm. From the kwwl ssormtrack 7 weather team. See the screen for your complete weather information. Here is additional forecast light rain snow mix develops this evening 79 pm and transitions to all snow by 10 pm. Oads will become slick by this time and remain that way hrough tuesday morning. Snow continues through the night then tapers off by 6 or 8 am. Snow totals range from 4 6 around dubuque to wateeloo with 24 for the reststof eastern iowa north of iowa city. From iowa city south expect at trace2. Light snow or flurries ling into wednesda morning followed by afternoon. High temperatures will be in the upper 20s and low 30s. Far from the 60s we had saturday. Blowing snow is expected tonight and tuesday with a north wind at 1020 mpp the wind diminishes after 6 pm tuesday. We are tracking another chance of snow for wednesday night into early thursday morning. Similar snow amounts and timing with this round of snow compared to tonight monday night . A light rain snow mix develops this evening 79 pm and transitions to all snow by 10 pm. Roaa will become slick by this time and remain that way tonight, in an emotional interview. A mother is begging for answers while searching for her