Nightly news begins right now. A aouncer from nbc news World Headquarters in new york, this is nbc nightly news with lester holt. Good evening. Time is shoror and the todo list is long for the men and women running for president. In just six days we will be counting actual votes in iowa, but in the final stretch its all about the polls, and tonight they appea to confirm a dramatic reversal of fortune among the two republican frontrunners. Donald trump now ahead in a state that once seemed to be ted cruzs to lose. And more worrisome for the cruz camp is trump is lining up what could be key endorsements high drama in the democratic contests, too. Weve got both races covered startrng with nbcs katy tur. Hi, katy. Reporter hey there, lester, you know its crunch time when one candidate is flying known endorsements and the other issuing a warning. Donald trump is about to take the stage joined by arizona known for his hardline stance on immigration. The clock is ticking in iowa. Six days left and donald trump is pulling ahead. Today leading in five of the last six major polls here. The race now a cage match between the billionaire and his texas rival ted cruz. Each looking for a knockout punch. We have a very powerful endorsement coming down today. R rorter for trump a major evangelical endorsement, jerry falwell, jr. , who spoke glowingly of trump at liberty universi last week. In my opinion donald trump lives the life of loving and helping others as jesus taught in the great commandment. Reporter 57 of iowa gop caucusgoers identified as evangelical or born again in 2012, and whileeruz has the edge among those voters by most accounts, trump is dominating among moderate voters, meaning he may only need to be competitive among evangelicals to win. And falwell could give trump the credibility he needs. Its a very, very close race, and so Little Things on the a little bit of a difference. Reporter cruz, meanwhile, is staying faithful to his ground game barnstorming iowa with another seven stops on his bus tour, remaining confident publicly. The judgment that the men and women of iowa are makg is who has a proven record as a consistent severtive who has been the same yesterday, today and tomorrow. Reporter but in a video obtained by cbn privately warning pastors and if donald wins iowa, he right now has a substantial lead in new hampshire. Theres a very good chance he could be unstoppable and be our nominee. Reporter seven months of campaigning and its all down to these last few days. Katy tur, nbc news, marshalltown, iowa. Thank you. Im casey hunt in iowa where Bernie Sanders says he feels like a winner. If we have a large voter turnout we will win and we will win g. Reporter Hillary Clinton trying to avoid reliving the past in iowa. Heart out for you as your presidenen reporter a new campaign ad showing voters just how long shes been in the fight. Its a reminder for young voters. Ive been on the front lines of change and progress since i was your age. When i worked on health care back in 93 and 94, and i dont know if youou were born then, i cant quite tell, but if you had been around and had been able to pay attention, i was trying to get us to universal health care coverage. Reporter sanders is older than clinton. Youre 75 now. You would be 74. Reporter but an nbc News Survey Monkey poll out today shows young voters support him by a wide margin, just like they backed barack obama in 2008. Are you the heir to president obama here in iowa . I wouldnt look, no. Obama in 2008 ran a campaign which is really going stay in the history books. I think in this campaign that we are going to match that . I would love to see us i hope we can. Frankly, i dont think we can. Reporter sanders and clinton both leaving iowa today. A trademark crowd of thousands waiting for sanders in minnesota. Clinton fundraising on the east coast. With both candidates out of the state i think they both are looking ahead and saying that theres going to be a day where iowa is not the focus. Reporter coming into view, a slog of a nomination fight. Clinton cant pull out a win here in iowa. Sanders says hes going to fight for this nomination all the way to the convention, but if he cant beat clinton in iowa, that roa is going to be a lot lester . Thank you. We want to let you know tomorrow ill speak to Bernie Sanders about the race and about his chances just five days until iowa. Well have it for you right here tomorrow night. The big scare today at a Navy Medical Center in san diego after someone reported hearing gunshots. The federal Health Lockdown as Law Enforcement flooded the scene. Qfficers going room to room looking for a in the end, no one was found. Just thousands of people left with frayed nerves from a terrifying ordeal. In Northern California tonight, evacuations amid a real life cliffhanger. A neighborhood hanging on the edge as a powerful el nino eats away the coastline and may take homes with it. Nbcs Gabe Gutierrez has all the high drama. Reporter on the california coast just a few feet separate these apartments from disaster. The building hanging in the balance. And Michael Mchenry hanging on to what he has left. The surff is so hard when it comes up, the whole place shakes and theres no way youre going to sleep regardless of what you try to do. Reporr structure that once allowed him such stunning ruse is now teetering on the edge of oblivion. Still, despite evacuation orders, 5 of the 20 residents living here are refusing to leave. I have nowhere to go, so i will be here. Reporter the severe erosion blamed on el nino. Looked like in 1997. This is what it looks ke today. We knew that this day was going to come. Reporter last night the City Council Approved an emergency declaratio allowing pacifica to ask for state and federal money to fight coastal erosion. The area has tussled with el nino before. Stroro storms in 1998 booted several homes off this cliff. Then in 2010 two buildings were evacuated and condemned. This season torrential downpours might hp relieve californias historic drought, but pacifica is feeling the downside, quite literally. El nino pretty much guarantees well have more numerous storms and thats a pounding effect on the coastal area and more chances for beach erosion. Reporter for Michael Mchenry its not just his home but his life that seems to be collapsing. Im about to be on the street. The ocean, if it wants us, its going to come take us. We dont have the power to slow it down or stopit. Reporter tonight hes moving his place else to stay in this town tired of living on the edge. Residents here are allowed inside to pack, but they are not allowed and not supposed to spend the night. Still, some of them are ignoring that order even though anothe storm is expected this weekend. Lester. Sucm a remarkable scene. Gabe, thank you. On the east coast many are still digging out from the blizzard of 2016. In the Nations Capital the federal government remains shut down again today as did Many School Districts in several states. As Nbc News National CorrespondentMiguel Almaguer tells us, progress is being made, butor many it is not coming soon enough. Reporter in washington, d. C. The snow emergency will be lifted tomorrow as many here are still kneedeep i frustration. Its l le all of winter in one weekend. Reporter today in the bitter cold a woman rescued after spending three days trapped in her car. Its been nearly 70 hours since the last snowfall, and neighborhoods still enough is enough. Weve had the winters snow already. Were finished. Reporter n new jersey snow brought down the roof on this skating rink. At the shore, the floodwaters have receded but not the anger. Governor christie criticized last night after returning to the campaign trail. I dont know what you expect me to do, to go down there with a mop . I think it takes had a little bit more than a mop for this. The home is not livable anymore. Reporter after outrage from some local officials tonight an apology. My apology was i really felt badly about it. Reporter in new york city they are shoveling 7. 25 tons of snow. Enough to fill Yankee Stadium 66 times, andnd in queens a lot of it is still on the street. If you need an ambulance, how are they going to get through . God forbid you have a fire. Reporter in virginia there has been progress this. Neighborhood we showed you last night finally looks like this. Even though cancellations are down at airports, the complaints tonight are these smaller city the cleanup is far from finished. Lester . Miguel almaguer, thank you. The fbi says it has foiled a mass shootingnglot in milwaukee. 23yearold Samy Mohammed h ha mzeh has been charged with possessing machine guns and a silencer. The fbi says he was planning to carry out a shooting rampage at a masonic temple. He was arrested after the fbi says he bought a gun from two undercover sources. Six Cleveland Police officers removed from the force todada for the shooting deaths of an unarmed couple during a high speed chase where well over 100 bullets were fired in just a few seconds. As nbcs blake mccoy reports, it took the city more than three years to fire the officers. Reporter a car sits riddled with bullets. Two people dead inside following a 2012 high speed chase through the streets of cleveland. It began when officers tried to pull over the car and mistook an drive into the parking lot. Reporter today new audio from investigators reveal the moment that the unarmed pair was cornered. 120 rounds fired at Timothy Russell and Melissa Williams in just ten seconds. State investititors diagrammed the shooting showing how chaotic and dangerous all of that crossfire was to fellow officers. Then, this photo showing the windshield after one overs stood on the hood of the car, even after the couple had been subdued and fired down at close range. Discharged. Reporter that officer, michael one criminally charge the. He was later acquitted. Tonight he has been fired along with five other officers, six face suspension, a 13th officer rered last year. It was very difficult, very us. Reporter the police union came out disciplinary action politically motivated. 101. Country. Here in cleveland. Reporter the Justice Department has found Cleveland Police to have frequently used excessive foe. Tonight a move meant to provide closure to a city and two families. Blake mccoy, nbc news, chicago. Now to the growing outrage over the toxic water crisis in flint, michigan. The mayor says it could cost as much as 1. 5 billion to fix e lead contaminated water system, but nbcs Stephanie Gosk has found so far none of the pipes so far are not being replace snootd plumbers in flint say they are ready. Weve got guys ailable. If i need 200 guys next i can get them. Reporter but the plummers in flint havent gotten the call. Nbc news has learned from city officials and the Plumbers Union theres currently no lead pipes being replaced and the plumbers tell us they havent done any work since the october announcement that the water wanes safe. Harold harrington showed us a lead service pipe. With gloves on. The corrosive water basically strips the inside of the pipe. And yes, and exposes the lead. Reporter there are as many as 25,000 lines just likeehis in flint, running from the water main in the street to peopops homes. Buried five to six feet deep did. The only way to replace them is to dig them up. Thats going to take several years to complete the job, but the longer we delay, the longer p lple are at risk. Reporter professor Marty Kaufman is creating a map of the lead pipes for city officials. Do you know where all. Lead pipes are . No, we do not. Reporter here is a part, a big part, of what they are up against. The record for the Service Lines with kept on these 3 x 5 cards. This one is from 1948 handwritten in pencil, illegible in parts and there are an estimated 50,000 cards in these cabinets. On top of that every home needs to be assessed by experts like harrington. The cost of those repairs will fall on the meowner. Brown, a great great grandfdfher who worked for 38 years on the Assembly Line at buick. Hes still paying a more than 100 had a month bill for water his family cant drink. That line is ad. Reporter fixing the problem could cost as much as 10,000. I would be thinking that its not our fault. Reporter his great granddaughter blames the governor. I guarantee you his grandchildren isnt drinking this water. They are not bathing in this water. They not cooking with this water. So why should we . Its not fair. Reporter tonight the gornors office tells us that the treatment they are now using in the water will create a protective layer around the pipes, and they will rely on experts to determine when the water is safe. They also say that they have asked for money in the state budget to replace some of the pipes. Lester . Sphanie gosk tonight, thank you. And a programming note my colleague Rachel Maddow will host a town hall on this crisis live from msnbc. Still ahead tonight, pregnancy and depression. One in seven moms suffers from it, often in silence, butut now a major announcement to lead to so many more getting the help they desperately need. Also, is apples big sales streak coming to an end . 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And recommends all women before and after birth be screen ford depression, something that affects one in seven moms. Women want to have these conversations because they are recognizing themselves that somomhing is amis. Reporter its so prevalent. Reporter in 2005 Brooke Shields shattered the silence on the today show d now on the red carpet this month actress Hayden Pannetiere telling e news shes proud to be a spokesperson after getting help following the birth of her doubter. Doesnt mean they are weak or a bad mom or doesnt mean they are strange and they need it. Reporter how do you know whats just a common baby blues and whs depression . One difference doctors say is the time frame. Baby blues usually happen within the first two weeks of birth. If the severe anxiety lingers to the sixweek mark it could be more significant. Risk factors include history depression, prenatal anxiety and child careestress. Doctors say family members need to be aware of the issue as well. If you ask your loved one do you feel like you want to harm yourself or your baby . That is a question that is okay to ask. Reporter tk therapy helps and for pregnant women the risk of medication must be weighed against the risk of doing nothing. Most Health Insurance including the Affordable Care act must now cover the screening so family portraits can be as happy as moms hope. Anne thompson, nbc news, new york. There is more Important Information ahead. Were back with the aler for pregnant women o i accept im not 22. I accept i do a shorter set these days. I even accept i have a higher risk of stroke due to afib, a type of irregular heartbeat, not caused by a heart valve problem. But i wont play anything less than my best. So if therers Something Better than warfarin, im going for it. Eliquis. Eliquis reduced the risk of stroke better than warfarin, plus it had significantly less major bleeding than warfarin. Eliquis had both. Thats what i wanted to hear. 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The mosquito borne virus has been linked to severe birth defects. The cdclso advises that babies should be tested for congenital infections if the mothers traveled to zikaaffected areas at any point during pregnancy. Despite selling a a record 74. 8 million iphones in the final three months of 2015, apple said today its praising for its First Sales Decline in 13 years. As analysts say Global Demand sloos for new smartphones. The economic slowdown in china could also hurt apples bottom line. The company does say, however, that it is position for the future, and it estimates that a billion apple devices are now i i use. Big trouble tonight for one of the biggest stars in the navnlt the l. A. Clippers say they are investigating an incident iolving forward Blake Griffin in which griffin threw a punch and broke his hand during a road trip in toronto. Multiple reports say the incident also involved a member of the clippers staff. 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I want this time to be my last time. Thats why i choose nicoderm cq. My Opioid Pain Medication is slowing my insides to a crawl. Millions of people are estimated to suffer from opioidinduced constipation, oic, caused by the opioids they use to manage chronic pain. Oic is a different type of constipation. Opioids block pain signals, but they can also block activity in the bowel. Im really struggling to find relief. Ready to paint a different picture . Yes talk to your doctor about oic i can do that finally tonight, our farewell to one of the greatharacter actors in hollywood, from movies like the godfather to Barney Miller on tv. Abe vigoda was beloved and after several false reports of his death over the years became the stuff of legend. Sadly this time its tr. Nbcs Kevin Tibbles has a look back. Reporter he just had one of those faces, kind of droopy and warm, and those were the sorts of characters abe vigoda played best. As phil fish on the 70s cop sitcom Barney Miller. Was also the doublecrossing mobster sal itsio in the godfather until he was bumped off. Tell mike to mind his business. Reporter vigoda also gained notoriety for not being dead. It was in 1982 that had a magazine declared he was no more. Vigoda played it for all it was worth on te night television. Come on. Be here with your own kind. Abe vigoda. Reporter he was also a favorite guest of the today show. Thank snow and abe vigoda twitter feed even popped up with the sole purpose of reporting iffe was dead or alive. It garnered 10,000 followers. He later appeared in a supepebowl ad for snickers candy bars back in 2010 with betty white. They were both 88 years old. That hurt. Reporter born ab aham charles vigoda his career spanned the stage, the screen and television. He died in his sleep in his daughters home in new jersey. Abe vigoda was 94. Vin tibbles, nbc news, chicago. And that will do it for us on a tuesday