Global house emergency. Two Virginia Tech students are charged with the abduction girl. Like this. Amtrak is investigating objects that struck a train to new york. Everybody looked at it and said its a gun shot. Is on. The broncos and panthers are in california and so are the pants. Ted cruz hoping to get love from his daughter, she wants nothing to do with it. Nearly struck by lightning. Oh, my god and all that matters. Welcome to diverse tv. Awards. I am enough. You got to get out. And i joke, i say if youre temperature, if your doctor says you cannot leave your bed, you wont make it, it doesnt matter. Get up and caucus. Get us and caucus. This mornings eye opener is presented by toyota lets go places. Welcome to cbs this morning. The first votes are about to be cast in one of the most heated president ial contests in modern history. Iowa holds its president ial caucuses tonight. Voters will gather in libraries and school gyms and private homes and they will decide two very close races and turnout will be key. Democratic rivals Bernie Sanders and Hillary Clinton are neck and neck and we will talk with the former secretary of state shortly. Twelve candidates are in the republican race with donald trump and ted cruz fighting for first place. First time caucus goers could decide the outcome. Our correspondents and political trail in iowa and we begin with Major Garrett in des moines with the gop showdown. Reporter good morning. Welcome to camp cruz. This is one of two dormitories the campaign has rented here in des moines and im keeping my voice down because everyone is still asleep. More than 130 volunteers from 31 states have come to iowa to campaign and mobilize voters for old onfashioned way one voter at a time. Concerned. No flipflop. Reporter volunteers at ted cruzs iowa headquarters hit the phones sunday. We have a lot of leadership in washington. Reporter part of a Voter Mobilization effort considered second to none. On the stump in des moines, cruz implored his supporters to show up 7 00 p. M. Tomorrow night, stand and caucus with us. If we stand together, we will win. Reporter the Cruz Campaign also sent this flyer, which highlighting voting violations to boost turnout among unlikely voters. The idea . Shame them to caucus and bring their neighbors. Iowas secretary of state questioned the hardball turnout tactic, so did donald trump. Its like an official document being sent to people in iowa that they have to get a vote because they are in violation. I said, that is really terrible. Its a fraud as far as im concerned. Reporter cruz officials called it a typical mobilization maneuver. The less typical one . Lets called old donald duck and try to get him to do the debate. Reporter to coin duck dynasty Phil Robertson to attack the rivalry for skipping a debate. On face the nation trump downplayed an iowa victory. Your campaign is based around the idea youre a winner. Does that mean you have to win iowa . No, i dont have to win it. I now have a fairly substantial lead in iowa. I think we have a good chance of winning iowa. Reporter on into sioux city, Trumps Campaign attracted far less than cruz relied on personal persuasion. If your does says you cannot leave your bed, you cannot make it, it doesnt matter. Get up and caucus. Get up and caucus. Reporter trump has no dormitory for volunteers but he has splanarah palin who is campaigning with him later today in cedar rapids. Trump is almost no ones second choice and ted cruz is. That could give him a distinct advantage among the 45 of caucus goers who could still change their mind. Major, thank you very much. Weekend poll gives donald trump fivepoint lead over ted cruz. The Des Moines Register poll has predicted eight of the last nine iowa caucus winners. A lot of focus is on who will finish third. Marco rubio is in third place in the latest poll. Dean reynolds it he is state capital in des moines with the overtake him. Dean, good morning. Reporter good morning. Well, if the polls are right, the Republican Party establishment will be the big loser tonight and the question is whether that defeat will have a Lasting Impact on the race. I got Terry Branstad head at home and lie at it a while for inspiration. Reporter in the waning hours of the campaign governor Chris Christie shared the stage with iowas governor Terry Branstad. I cant wait to get into the white house and pick up the phone and call terry and say, terry, help me fix america the way you fixed iowa. We are going to do it together. Reporter in cedar rapids, senator marco rubio you must caucus in my opinion, respectfully. For someone gives us a chance to reporter he is talking about the general election. Certainly not iowa where polls say neither he, christie, jeb of a shot. You have to have a winner this time. Youre going to have a winner. Reporter with iowa, republicans more inclined toward donald trump or ted cruz. God bless the great state of iowa. Reporter rubio and the rest are pinning their hopes on the next contest in New Hampshire. We will be leaving as soon as the caucus is over and we will be in New Hampshire early Tuesday Morning ready to work. Reporter so for them, iowa is a scramble for third or fourth place. You dont have a great record of picking president s, though. Reporter governor branstad has not endorsed any candidate, but he has appeared with the ones he likes and not appeared with the ones he doesnt. We are more candidates than we have ever had. I think whenever records turn out, i will respect the outcome from the Iowa Republican caucuses. Reporter now losing iowa isnt always politically fatal. Among the many losers over the years was Ronald Reagan who lost went on to win the presidency the latest poll of democrats shows Hillary Clinton with a threepoint lead over Bernie Sanders. Nancy, good morning. Reporter good morning. Its hard even for iowans to believe that the day is finally here. Take a look at the front page of the Des Moines Register. Big red and blue letters. Caucus. Let your voice be heard. This is one of the places where those voices will be heard. This is Merrill Middle School in des moines. Tonight about 600 to 800 democrats will gather in this gymnasium. And then theyll try to convince each other to switch sides. Making an already tight race we cant afford to make a mistake. Reporter looking for redemption in the state she lost eight years ago, she boiled down her message. Stick with me. Stick with the plan. Stick with the ideas that will actually work for our country. Reporter just like 2008, a onetime underdog is nipping at her heels. It sounds like you want to make a political revolution. Reporter promising major change. Heres a radical idea. Together were going to create an economy that works for all of us, not just the 1 . So in this first column weve got age and gender. Im calling with the Hillary Clinton campaign. Reporter theyve invested heavily in their get out the vote effort. 4,000 volunteers knocked on doors. I will be caucuses tomorrow. For bernie . Yes. Excellent. Reporter 83 of clinton supporters say their mind is made up compared to 69 of sanders. Both of them pulled out all of the stops to charm voters. Even serenading their supporters. This land was made for you and me make some noise for bernie go out and vote reporter former Maryland GovernorMartin Omalley is at 3 in the polls and in a primary that would make him a nonfact per. But in a caucus where neighbors can trade, switch allegiances halfway through, that could make a difference especially because clinton and sanders are cbs news political director and face the nation moderator John Dickerson is in sghoin. Des moines. What should we be looking for tonight and looking at and what could be the consequences of iowa . On both republican and the democratic side, we are looking for turnout. If its big on the republican side, that means these firsttime voters that like donald trump have come out and turned out to caucus. It also means on the democratic side that Bernie Sanders has created with emotion and enthusiasm an actual organization that can turn out voters to the caucuses. Those are the first two big things im looking for. What we will learn tonight on the democratic side, learn if Hillary Clintons structure which she has been working on for months and months and months before Bernie Sanders was a threat, she was building an organization here to handle a threat that he has become. We will find out if that organization beats the enthusiasm he has been able to build. And on the republican side, we will find out if ted cruz has been able to have an do better than the polls are showing. That will tell us not only about how well he can do here but if he can launch that conservative revolution that he has been saying that he is going to launch. Donald trump told you yesterday, john, he doesnt have to win iowa. A, does that surprise you . Do you think he is trying to maybe lower expectations . Two things you do on caucus day here in iowa. One, you try to turn out your voters. Two, you try to manage expectation. In the sense he is doing that, he is just like every other politician. He doesnt necessarily have to win in iowa, but it is the center of his argument that he is a winner. And so that would ab big blow. But the one thing that would save him is there is not a clear alternative. There is an alternative in iowa but not necessarily the case that all republicans think that ted cruz is the alternative to donald trump. There is also the point that he says if he wins in iowa, he might be able to run the table. Yes. He might be able to run the things change after you get out of iowa and we will see how marco rubio does and whether he becomes the alternative in New Hampshire which is a much more favorable state for him. Hillary clinton will with us from des moines and we will talk with her coming up on cbs this morning. International Health Officials today could declare the zika virus a global emergency. The World Health Organization is meeting in geneva to discuss an action plan. There are at least 31 cases in the United States. All are related to recent travel outside this country. Dr. Jon lapook is in Rio De Janeiro in brazil at the center of the growing epidemic. Reporter good morning. Brazil has been hardest hit by the zekeika virus and may have arrived here in the world cup soccer match. The fear is it could spread to months. Its become an all took common scene. Health officials spraying insecticide to sill the zika virus. The virus has been suspected in causing an increase of cases in microcephaly and children born with unusually small head and often with brain damage. More than 421 cases have been reported so far in brazil and pregnant women fear other side effects from the virus. The public doesnt know everything about it. We dont know exactly the consequences. Reporter tourism will also likely suffer, despite officials downplaying risks to visitors. Rios fame carnival festival begins february 5th. Health workers here took to the and information. And brazil is set to host the summer olympics in august. Events like this wrestling match are already underway and athletes are taking precautions using bug spray and staying indoors. Kind of scary but there is nothing really you can do. Like, if you get bit, you get bit. Reporter if the World Health Organization declares the virus a Public Health emergency, it will be only the fourth time the organization has done so, meaning zika virus could join the company of h1n1 flu and the resurgence of polio. Jon continues his original reporting tonight on the cbs evening news and take us into one of the hospitals in brazil at the epi center of the zika pandemem. Amtrak is investigate ago pain possibly hit by multiple objects. The train was traveling yesterday from washington to new york. Passengers reported hearing objects smack against the train in philadelphia. One cracked a window. As the deadly derailment in philadelphia last year. Authorities will release evidence from that crash today. Part of the federal investigation focused on whether or not objects struck the train minutes before the accident. Parts of california are cleaning up this morning from a deadly winter storm. High winds ravaged the state and one driver in san diego was killed sunday when a tree toppled on to her car. Ben tracy in los angeles shows us all of the damage. Reporter high winds uprooted an eightfoot wide oak tree in san diego and killing a woman driving this honda. Three other cars were also damaged. Trees fell all across Southern California because the ground is soaked by recent storms and winds were howling up to 70 miles an hour. Gusts topped 115 Miles Per Hour in some areas and some trees stood no chance. Heard a pop. Slow motion. It was down. Reporter the winds also downed power lines and leadingng to widespread outages. Had no power. Ive been here 15 years and never seen the wind blow this hard. Reporter this scaffolding was reduced to a pile of twisted metal. A worker trying to reduce the Wind Resistance when it collapsed and, thankfully, he hasnt hurt. E was just walking backike this and, all of a a sudden, everything fell down around him. Reporter this car slid off an embankment and rolled over four times. But the driver walked away. I was pretty stable inside the vehicle as far as i had my hand on the Steering Wheel and my hand on the roof of the vehicle and i kind of just went with the car as it rolled over. Reporter despite the damage, california desperately needs the rain, ter four years of punishing drought. El ninofuelled storms are expected to last through spring. For cbs this morning, ben tracy, los angeles. The teams of super bowl 50 are in the San Francisco bay area to prepare for sundays championship. Cam newton and the Carolina Panthers look stylish as they crosscountryyflight. The broncos landed a few hours earlier and buses carried peyton hotel. Neither squad will have much sundays game. Players and coaches the thats all sunday only on cbc. And how about the cam newton pants . Im trying to get a pair for the president. I think theyll be a good conversation starter. You think the president and first lady are ready for you . I dont know. I dont know. Were working on it though. I dont know how hard the questions are going to be. We are working on it. We are working on it. Eight years ago, Hillary Clintons first loss to obama came in iowa. Ahead we will ask the former to winin announuer this portion of cbs every kiss begins with kay. Why Police Believe the suspect had help in a murder. The news is back here in the this morning right here on cbs this morning. Announcer this portion of cbs this morning sponsored by panera bread. Food as it should be. Panera bread. Food as it should be. And warmth and looking good, and sandwich and soup and inside jokes, and dan is back good, clean food pairs well with anything. The clean pairings menu. 500 calories or less. At panera. 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