Harrowing scene inside the cabin as passengers brace for an emergency landing. Nightly news begins right now. News World Headquarters in new york, this is nbnb lester holt. Good evening. Theres some big and intriguing new story lines in the race for president tonight after iowa voters reshuffled the race. There were just two winners, of course, but at least twice that many victorysounding speeches after last nights results followed by the mad overnight dash to New Hampshire. Ted cruz arriving with a surprise tailwind after defying the polls to defeat trump. Marco rubio a close enough third to add a race. For the democrats it was razor close, but Iowa Democratic party has declared hillary over Bernie Sanders virtual tie. The New Hampshire tonight just got a whole lot more interesting. Cruz trump headline and hallie jackson. Hello, hallie. Lester. The center of the political universe has shifted here less than 24 hours after iowa set a record with 50 more republicans caucusing than ever before. Hampshires turn with some candidates under pressure. Not used to losing were going to win. Much. Reporter donald trump finally did, today making headlines with the winning story line all ted cruz. So what a victory last night. Reporter hes deploying the same strategy in windham, New Hampshire as he did near windham, hands. A local volunteer campaign. Reporter make lots trump. Donald trump was saying every day that i was his friend, that he loved me, and now im an anchor baby. He or anyone else insults me i dont reporter but youve attacked them . I do think differences on policy, on record, on reporter our conversation coming just after cruzs victory speech last night which trump today slammed for being too long, too flamboyant, taking a tone very different from his gracious one last night. And i want to congratulate ted, and i want to congratulate all of the incredible candidates. Reporter trump now in New Hampshire where he leads by double digits. His edge here, more independent voters and fewer evangelicals, a Crucial Group for cruz in iowa, and by the time New Hampshire votes tuesday, trumps decision to bail on the des moines debate may not resonate anymore. Anything can happen because New Hampshire voters really make up their mind on that final weekend. Reporter while cruz hopes to frame this as a oneonone duel, one point behind trump in iowa was marco rubio, a strong third. Isnt this a threeman race now . Well, listen, thats up to the voters. I have to say im amused at the media talk about what an impressive third place fin snish but a new state means a new race, now just run h ha llie jackson, nbc news, windham, New Hampshire. Reporter this is Gabe Gutierrez covering the rubio campaign. Rarely has a third place finish felt so much like a victory. Today marco rubio fought to keep that momentum. Ill see you in the i wasnt kidding. Reporter thanks to a ground game that swayed late undecided voters, rubio shattered expectations in iowa, surging into the top three of the republican field. So this is the moment they said would never happen. Reporter and emerging as the first viable gop alternative to cruz and trump. They told me that we have no chance because my hair wasnt gray enough and my boots were too high. Reporter even polling at 15 , yet he 23 , one percentage point behind trump. Establishment candidate here . You know, i think people always use that ive had to run establishment. That said i want to unify theheparty. Reporter now the question is how much will that establishment rally behind him, or will donors support other candidates, jeb bush, christie . Today christie took this isnt the Student Council election, everybody. This is an election for president of the united states. Lets get the boy in the bubble out of the bubble. Reporter some strong words from christie. I think thats been a tough couple days for chris and some of the other guys. Reporter rubio looking past New Hampshire. Im putting my confidence and my trust in marco rubio. Reporter announcing an endorsement from South Carolina senator tim scott. Rubio wants to make the case in New Hampshire that unlike ted cruz he can appeal to republicans in a much more moderate state, and so thats how he wants to position himself as the anticruz. Reporter many analysts are predicting a 3, 2, 1 strategy for rubio, if he finishes third in iowa, second in iowa and first in South Carolina, that could be the path to the nomination. Lester. For democrats it was the closest race in iowa caucus history, so tight that party did not declare Hillary Clinton a winner and by a narrow margin until late this afternoon. Bernie sanders has not ruled out contesting the count. Weve got both campaigns covered started with nbcs andrea mitchell. Reporter in New Hampshire today Hillary Clinton was sounding triumphant. I am so thrilled that im coming to New Hampshire after winning iowa reporter but the stark reality is after starting out 40 points ahead of Bernie Sanders she ended up victory. Tails. Tails. Reporter it even took coin tosses to get there and the delegates will be virtually evenly split. Clinton today telling Msnbcs Chris Matthews she was relieved at everybody said if there was a big turnout that would advantage senator sanders. There was a big turnout, and we won. Reporter but iowa entrance poll reveals her weaknesses. Among the biggest, the crushing defeat among them by 84 to 14 . Why are young voters going for sanders . Do you understand what that dynamic is . Absolutely . Reporter what is it . System is rigged against you, vote for me, ill break up the big banks and tax the billion airs and give you free college and cut the cost of health care, end of story. Reporter after squeaking out a win in iowa, clinton is now soundingngore like sanders. I know that we can finish the job of universal Health Care Coverage for every single man, woman and child reporter shes now trying to lower expectations here in New Hampshire where sanders from neighboring vermont has a doubledigit lead, hoping her husband, who was once the comeback kid here, will help her at least avavd too big a defeat. Andrea mitchell, nbc news, manchester, New Hampshire. Reporter im kasie hunt with the Sanders Campaign in New Hampshire where they are hoping to turn iowa momentum into his first 2016 victory and last night we began the Political Revolution not just in iowa, not just in New Hampshire but all over this country. Reporter sanders criticizing clinton after this comment last night. I am a progressive who gets things done for people. Reporter do you think Hillary Clinton is a progressive . Some days, yes. Except when she announces that she is a proud moderate and then i guess shes not a progressive reporter vermont senator still riding high after that near miss in the Iowa Caucuses that the Campaign Says was anything but a loss. It looks like we are in a virtual tie. Reporter according to entrance poll, that performance was powered by firsttime caucusgoers who wentt for him 59 to 37 . But those polls also show a steep challenge for sanders. Most concerned about which candidate can win in november backed Hillary Clinton by 60 points. Well, i like you, bernie, i want to vote dont think you can win. Well, i think that today we took a giant step to overcome that kind of doubt. Reporter it was a whirlwind night for sanders. A red eye flight to New Hampshire where hundreds of supporters rallied for him at 5 00 in the morning. What time is it . Thats amazing. Reporter another sign of that enthusiasm . After his speech last night Bernie Sanders raised over 1 million. Lester . All right, kasie, thanks. Lets turn to chuck todd, nbc news political director and moderator of meet the press. Chuck, what impact will last night have it is a plays ought over New Hampshire the next week . Now we see a shift ininhe burden of proof on candidacies n. Iowa the burden of proof was on donald trump and Hillary Clinton and ted cruz. Ted cruz passed his test. Hillary clinton barely passed her test. Now the burden of proof shifts in New Hampshire to Bernie Sanders and donald trump. Donald trump and had doubledigit leads in New Hampshire for weeks. Now they have to win here. Well, Hillary Clinton might have a little bit of momentum, the clintons have done well in New Hampshire in the past, and now we know everything could be thrown up into the air on the republican side of things. So i think thats the big change here is suddenly mustwin states for sanders and trump. All right, chuck. Thank you. There are a pair of troubling new developments in the zika virus outbreak. Doctors in the u. S. Are reporting the first known case of the virus being sexually transmitted. While in brazil experts are trying to virus could be linked to a rare condition that causes paralysis in adults. Nbcs rehema ellis reports from brazil. Reporter mosquitos are the primary way the zika virus is transmitted, but today the cdc confirmed the first case acquired by texas. As a result, the cdc tells nbc news it will now issue a new advisory this week. Back, gets sick with zika and then has sexual intercourse with a woman who is pregnant or may be pregnant, there is the theoretical risk that that woman could then become infected with reporter as Health Officials study transmission, the cdc is also investigating other serious illnesses seca may cause beyond microcephaly in babies. In brazil, 27yearold dave gomez is recovering from sudden paralysis he woke up a month ago after having zika zikalike symptoms. He was diagnosed with gulanbarre syndrome, a debill interrogate and often treatable condition with blood cell infusions and physical therapy. Last year we have 65 cases. Reporter this neurologist says thats four times higher than normal at her hospital. You think the zika virus is connected yes, absolutely. Reporter who is at risk . Everybody. Reporter the cdc is on the ground in brazil looking into the possible link. Were doing a study so we can determine if theres a relation and if so which people are most at risk. Reporter youre saying he could be disabled for the rest of his life . Yes, yes. Reporter this 59yearold farmer paralyzed for a month with guillanbarre syndrome showing no signs of recovery as scientist race to solve this unfolding medical mystery. Raheem ark ellis, nbc news, recife, brazil. Much of this country is under threat of Severe Weather overnight. Under 13 Million People are under tornado watches in the soututwhile blizzard conditions continue to pound the plains and midwest where they have already been hit hard. Nbcs jacob raskon is in the threat zone. Reporter the massive winter storm pummeled the midwest and plains, blizzard conditions in iowa and beyond. This will be a big the worst since 2008 and 2009. Reporter 11 inches of snow in the Hawkeye State and more than a foot in colorado, and in nebraska, where whiteout conditions choked more than 100 miles of interstate 80, 15 inches of snow. Airports scrambling to keep up. Nearly 2 million americans under blizzard warning tonight with 21 million at risk for severe storms. We could have wind, hail, even tornadoes today. Reporter late today reports of at least two tornadoes damaging a church and a college in mississippi, reported sightings in alabama, tornado watches from louisiana to kentucky. In memphis, parking lots and intersections flooded in minutes. Meanwhile in prediction. There is no shadow to be cast, an early spring is my forecast reporter only the 18th time Punxsutawney Phil has not seen his shadow since the late 1800s, and with el nino bringing temperatures up to 25 degrees above average out of the quqution, but for millions of americans it cant come early enough. And tonight the storm is on the move with tornadoes and tornado damage coming in by the minute and the threat of tornadoes, lightning, hail and continuing tonight and into tomorrow for millions of americans. Lester . Jacob rasc ho n tonight, thank you. Comedian bill cosby appeared in court for the first case against him. Cosby is accused of drugging and sexual assaulting a woman in 2004. A former District Attorney who declined to pursue charges in the case back in 2005 test today. He said the accuser had credibility issues, but he also says he supports the decision now to prosecute cosby. The defense wants the case dismissed. Still ahead tonight, they are accused of a shocking crime, a pair of Virginia Tech students charged in the killing of a 13yearold girl. Why its raising new concerns about the also terrifying moments inside the cabin when a huge hole is blown out of the side of a plane in there has to be a way. Carry the centimeter, divide by 3. 14 something something something. [ beeping, whirring ] great caesar salad and now the name your price tool shows people policy options to help fit their budget. Is that a true story . Yeah people really do save an average of over 500 when they switch. I mean about you inventing it. I invented the story, and isnt that what really matters . So. What else about me . Fact. Advil pain relievers are used by more households than any other leading brand. Relief doesnt get any better than this. Advil. brian im brian. I was in the military for 18 years. But i smoked. And i got heart disease. 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The night she disappeared nicole reportedly showed a friend texts from an 18yearold man she said she was planning to meet. They came on a messaging app called kick which autrities say has been used by sexual predators. We will not let this violence define us. Reporter police say 18yearold david eisenhauer, a track star and engineering student, kidnapped and murdered nicole. 19yearold natalie keepers was originally charged with helping him get rid of the body. Authorities now say she was involved before nicole died. Natalie keepers with being an accessory before the fact to the firstdegree murder of nicole lovell. Reporter the missing last week after climbing out of her bedroom window. Her body found 80 miles away in north these two individuals took my daughter from this know whwh i want all the information i can get. Reporter a family, a Community Without answers, shaken to its core. News. Were back in a change military leaders want to make regarding the draft. 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Yes talk to your doctor about oic and prescription treatment options. I can do that e timely tonight, as we noted at the top of the newscast, the political universe has now officially shifted from iowa to New Hampshire. A week from now the state holds very first primary in the nation, so whats weighing on the minds of voters there . We asked our Kevin Tibbles to visit a town in New Hampshire to fine out in our series we the people. Reporter in the shadow of the rugged White Mountains sits littleton, New Hampshire, the town that gave america the story of pollyanna and where you can still feel her optimistic spirit on main street. Its a positive mood, people collaborating and working together. Reporter but littleton also embraces New Hampshires mottof live free or die. At chuters candy store. Wow. Reporter owner jim aldon savers his role as an independent, like some 40 of the voters here. They are going to make their decision on their own. Not really influenced by, you know, the crowd. Reporter inside Northern Lights music have a rhythm all their own. I will decide when i cast my vote. Reporter son asher wants his candidate to be as independent as he is. Not having those views dictated to him by people who are advising him. Hes truly independent. Reporter but while much of New Hampshire has fared well out of the recession, many say it has come from hard work and sacrifice. Im not looking for a handout. I dont want anything from government, and i want my fellow neighbor to feel the same way. Reporter art runs a local frame shop and while his mind is made up his independent spirit runs deep. At the end of the day the world isnt a pollyanna. We do have to make tough decisions. Reporter the Granite State will make up its mind when its good and ready, and by golly, as pollyanna would say, that is something to be glad about. Kevin tibbles, nbc news, littleton, New Hampshire. And that is going to do it for us on this tuesday night. For all of us at nbc news, thank you for watching and good night. Also survivors and victims families of the mother emanuel 9 tout a message of love to local students. Also just 4 days until cam newton and Peyton Manning dance on the gridiron. Well also have a check of the forecast. Wis news 10 at 7 starts now. Good evening and thank you for joining us for the news at 7. Im Dawndy Mercer plank. And iimeaghan norman. Expected to start moving