begin. the republicans prepping for the spotlight. their last chance to plead their case. we have the all-access pass, just moments away. the candidates stepping up their game. >> i almost want to just go in and pray. >> and stepping up the attacks. >> he's willing to break his word to the voters. >ust three days until new hampshire, voters weigh in, and the results could send some packing. the urgent new warning about one of the biggest scams in america. fake phone calls demanding back taxes, threatening arrest. why you're more vulnerable now than ever. and tonight, the health alert for women. do not drink alcohol. now, the growing backlash and the apology. and the other big showdown. super bowl 50. the game plan, the security preps, and who's theheew name

and good evening from manchesterer thank you fororoining us on one of the most important nights of the presidential race so far. you can see this crowd right here gathering behind me. tonight's republican debate could be a complete game-changer. the debate field now whittled down to seven candidates. donald trump, back in the mix this time, after skipping that iowa debate. the latest poll numbers just now coming in, showing he iss still the clear front-runner. marco rubio and ted cruz right there, tied for second place. and ts, take a look, a live look at the debate hall right now. the energy building all across this statat but especially right here where the candidates will soon face each other and the nation. our team is covering it all and abc's tom llamas starts us off tonight. >> reporter: tonight, the stage is setet and candidates like senators ted cruz and marco rubio getting a feel for the stage that could change the direction of this race. rubio expected to take on the most fire tonight.

are the attacks against him. like from cruz, who is reminding voters who really won in iowa. >> what did you ththk about the really impresssse third place finish of marco rubio? that's an odd collection of words, impressive, third place finish. >> reporter: rubio calling out cruz for his campaign's efforts on caucus day to suggest dr. ben carson was dropping out of the race, which was not true. >> by the way, if you get a call on tuesday night saying that i dropped out, it isn't true,it's a lie. keep voting. >> reporter: and donald trump, leading in the polls here, but the race is tightening, starting the fight early, tweeting today, "wow, jeb bush, whose campaign is a total disaster, had to bring in mommy to take a slap at me. not nice." >> vote for jeb. >> oh, yeah. >> reporter: but that tweet's not stopping 90-year-old barbara bush. >> he doesn't give many answers to how he would solve problems. he sort of makesesaces and says sulting things. >> reporter: jeb, bringing in his famous mother to help lift his campaign off life support.

a crowd of more than 600. bush s ss he's his own man, , t won't run from his famous last name. >> people are just going to have to get over it, all right? it's -- i am who i am, you know? it's -- it's -- i'm in the establishment. >> r rorter: bush, part ofofhe pool of governors that includes chris christie and john kasich, hoping for a miracle in new hampshire. today, kasich getting a boost from another notable republican governor, arnold schwarzenegger, who compared him to that bullet-proof robot that made him famous. >> it absolutely wouldldot stop. ever. never give up. so, this is you. you are the terminator. >> and tom, right here with me inside the debate hall. tom, you're hearing one of the biggest fights tonight might actually be a rematch? >> reporter: that's right, cecilia. get ready for jeb bush versus marco rubio part two. all week, bush has been hammering rubio, saying he has

a top bush aide even calling rubio a no-show lobbiest. the rubio campaign says that bush is desperate, and they're going to be ready for anything tonight. i want to point out, cecilia, both of those menill be standing right next to each other on that stage. >> anything could happen. tom llamas covering the republican race every step of the way. tom, thank you. one reason tonight's debate could shapehe directiononf this race, nearly half of all republican voters in new hampshire have yet to make up their minds. so, what are they waiting to hear? here's abc's jon karl. >> reporter: as the candidates make the final push in new hampshire -- >> show time is over. it's game time. >> reporter: -- the republican race is tightening. donald trump sti leads all the polls, but marco rubio i i rising. and cruz, kasich and bush are not far behind. it's just three days to go before the primary, and at the chez vachon diner in manchester, we found folks ready to pick a president.

clearly you've made up your mind now, right? >> well, we haven't. >> reporter: you haven't made up your mind? >> we haven't ma up our mind. >> reporter: he's not alone. amazingly, more than 40% of likely r rublican voters in new hampshire say they still haven't made up their minds. he's narrowed it down to trump, rubio or cruz. >> i think we're stuck on -- will we actually have the nerve to vote for trump? i mean, that's really where we're stuck. >> reporter: so, when you go in there, are you able to pull the lever for donald trump, is the question. >> yeah, that's it. i mean, a year ago, i i couldn't imagine voting for trump. >> reporter: but there are two groups who seem totally decided. those who like the front-runner -- >> donald trump. >> reporter: no matter what? >> no matter what. i heard him. i liked what he had to say. i'i'voting for him 100%.%. no changing my mind. >> reporter: and those who don't. >> i definitely know i would not vote for trump. that's all i really know. >> reporter: but new hampshire voters have a long history of making up their minds late and surprising everybody. after barack obama won the iowa caucuses eight years ago, he was way ahead in the polls here in

losing to hillary clinton. this time, it's the republicans who seem most undecided. so, when will you make up your mind up, finally, totally make your mind up? >> i'd say really after this last debate. >> and so many peoeoe still waiting to make up their mind. jon joins me now inside the debate hall, too. jon, donald trump not at that last debate. we know he will be here tonight. what are you hearing from the campaigns about his strategy? >> reporter: well, trump's xaun manager says if he is attacked tonight, he will respond in kind, times ten. but we really don't k kw which donald truru will show up tonight. weevil seen two in recent days. we've seen him go nuclear on his opponents, accused ted cruz of cheating in iowa. but we've s@en him show incredible restraint. cecilia, we have never seen him debate after a loss. we just don't know which one will show up. >> and we will see it soon. jon, thank you. abc political analyst matt could is dowd is here with me. who has the most to win here

lose? >> well, it's pivotal for all seven up there tonight, but i would like to focus on three folks. john kasich has put all his chips on the table here. he's done 100 town halls and he has to figure out a way tonight to jump himself to second or third. the other person with the most to gain is jeb bush. he's spent more money than any ototr candidate in this race, and if jeb bush doesn't finish in the top four on tuesday, then his candidacy is on life support. and donald trump has the most to lose. he has been ahead and he is ahead b b double-digits. he's led 70 straight polls since july here. and he cannot afford another second place finish, otherwise his campaign is seriously impaired. >> the whole team here covering it all. matt, you'd be back later. thank you. the countdown is on for the democratic candidates, too. bernie sanders, the favorite son here. hillary clinton, the underdog. she was out going door to door herself today, while he was speaking inside before a packed

trail. >> it's a beautiful day in manchester! >> reporter: hillary clintnt may be down in the polls here in new hampshire, but don't count her out yet. >> well, i need your help on tuesday, and convince some others to come along. >> reporter: today, she's been out pounng the pavement, knocking on doors, trying to make up ground against bernie sanders. >> i feel like a rock and roll star. >> reporter: sanders has accused her of being wall street's favorite democrat. not progressive enough. >> i have spent my entire adult life trying to knock down barriers. >> reporter: today, madeleine albright joined clinton, appealing to women, in particular. >> just rememeer, there's a special place in hell for women who don't help each other. >> reporter: but some of the people attending clinton's own event agree with sanders. >> probably y r bernie sanders. >> i'm actually a bernie supporter. >> reporter: you're a bernie supporter? but you're here at a hillary event? >> i am. >> reporter: do you feel like you are behind enemy lines? >> kind of.

first questioner made a freudian clip. >> secretary sanders -- >> reporter: calling her by her opponent's name. clun clinton took it in stride. >> there are a lot of young people that support my opponent. but i want you to know,#even if you don't sepport me, i support you. >> reporter: the sanders surge here is clearly y nuisance for clinton. but it will be interesting to see tonight on that debate stage how seriously the republicans take him. it's a pretty safe bet they'll mention her name more than his. cecilia? >> i think that's safe to say. david wright, thank you. and, of course, the debate, you do not want to miss it. just moments away. david muir and martha raddatz moderating at 8:00 p.m. eastern, right here. but we do now move on to other news. to that deadly crane accident in new york. the move that went out of control, and the crane's sudden collapse, caught ocamera. the cab of that crane landing upside down, its arm smashing onto cars below.

injured. abc's phillip menaith the tonight. >> reporter: tonight, a massive job. moving this collapsed crane, all 565 feet of it. crews forced to use blow torches to tear it apart, after it came crashing down friday morning in killing one and injuring three, counterweight into a building. you can see all that debris still on the road there. some of it came from the top of that damaged building, where part of the crane still lies. the unanswered question tonight, what triggered the collapse? officials looking closely at t t wind and snow w nditions. how long do you think before we can figure out exactly what happened? >> you know, i think you're going to have to give us a couple of weeks at least while we do some engineering calculations, go through the metal and how it failed. >> reporter: officials say the operator tested negative for drugs and alcohol, and has been cooperating with the investigation. this crane is so big that workers are having to cut it

from the street. cecilia? >> phillip, thank you. we turn now to a health alert. the cdc apologizing tonight after a controversial recommendation to women. it says women should refrain from drinking alcohol, saying the risk to babies is too high. the reaction, fierce. many women saying thaha advice goes way too far. here's abc's gloria riviera. >> reporter: women across the country, sounding off over the cdc's new alcohol and pregnancy. >> it just makes no sesee to me. >> are you serious? is this really what you feel comfortable telling your wife, your sister, your daughter? >> reporter: while many women support the cdc's long-standing warning about the dangers of drinking while pregnant, the new guidelines hit a nerve, because they go further, telling health professionals to advise a woman to stop drinking if she is trying to get pregnant or not using birth h ntrol with sex. outrage exploding on social

calling the advice patronizing and reactionary and sexist. the women we spoke to, telling us they can be trusted to make smart, safe choices.s. >> i really do feel they are overstepping their boundary in terms of what a woman can do with their own body. >> this is, perhaps, the right intention, with a veryrong execution. >> reporter: the cdc points out, half of all pregnancies in the u.s. are unplanned. many women don't know they are pregnant for several weeks. possibly unintentionally putting their child at risk. today, the cdc telling abc news, "we were sorry some people took offense at our communications." the cdc is standing by its advicewhich, it says, was only intended to o early explain the risk drinking may have on an unborn child. cecilia? >> okay, gloria, thank you. and the debate s sge set to take place right here in this hall, it's not the only showdown this weekend. the super bowl now less than 24 hours away. more than 100 million people will be watching. the stage is set in san

and abc's ryan smith has the b b ticket. >> reporter: super bowl frenzy in full effect. >> broncos! >> carolina! >> reportete just 24 hours before super bowl 50, and fans are fired up. a clash of football's titans. all-time great peyton manning and the dazzling, dynamic cam newton. >> you don't go 17-1 as a starting q qrterback without being awesome. >> peyton manning will always be an all-time great. >> reporter: and to set the bar even higher, bruno mars confirming he will be apart of the highly anticipated super bowl halftime show.. joining coldplay and beyonce. security, not taking a backseat. we're standing here in one of the security operations centers for the super bowl. there are multiple ones so they can back each other up. and what are they looking for? well, they are looking on the streets, the stadium itself, even the air space, to make sure that super bowl sunday is a safe one. safety is paramount.

one for the ages. so, who will win the super bowl here at levi's stadium? las vegas odds makers have the carolili panthers at 5.5-point favorites. and while most people we spoke to here have the broncos as the sentimental choice, they're picking the panthers to win it all. cecilia? >> going to be a g gd game. ryan, thank you. and still ahead on this special edition of "world news tonight," the threatening phone calls to watch out for. >> within the next hour they will be at your doorstep to handcuff you and put you behind bars. >> a tax scam warning. whyou may soon be more at risk than ever before. and later, the president of a fraternity at an ivy league university under arrest. the allegations rocking that km pus.

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whether we like it or not, tax season is here. tonight, a warning. scammers working the phones to get their hands on your money. and those suspicious calls and threats cost americans millions. here's abc's ron claiborne. >> within the next hour,r,hey will be at your doorstep to handcuff you and put you behind bars. >> reporter: the government is warning americans to be on high alert for a growing phone scam that is bilking americans out of millions of dollars. this chicago area woman got a call like that in december, from someone claiming to be from the irs, demanding she pay tusands of dollars in back taxes. >> and if we don't, there's a warrant out for our arrest. >> reporter: scared, she wired $10,000 to an account in seattle. it was all a scam. the irs says, since october 2013, 5,000 victims, losing more than $26 million, to people pretending to be irs officials.

had this simple message. >> they often use a fake telephone number with a u.s. area code. they demand immediate payment. they may threaten arrest or deportation. >> reporter: starting next month, a new law requires the irs to hire collection agencies to help collect taxes. and those agencies may call taxpayers. >> in the future, when collectors are actctlly calling on behalf of the irs, people will be more likely to fall for that scam. >> reporter: paying taxes th don't owe. roroclaiborne, abc news,s,ew york. when we come back, held hostage during that bonnie and clyde crime spree. how the dangerous couple held one family for hours. what that family is saying tonight. and, fading out? why some of our favorite candies may soon look a little bit different. type 2 diabetes doesn't care who you are.man woman or where you're from. city country

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and to the i iex now. tonight, an ivy league university rocked by rape allegations. the president of cornell's psi upsilon fraternity is facing attempted rape charges. 21-year-old wolfgang ballinger was arrested after turning himself in. the fraternity now placed on suspension. and to that bonnie and clyde crime spree. the frightening momentt when this woman's husband spotted the dangerous couple right in their back p backyard. >> he saw a man standing there withth gun pointed at him, saying, open your door. and -- what do you do? >> the florida family held hostage for three hours. suspect blake fitzgerald was later killed in a police shootout. brittata harper is still in custody.

some healthy changes. m&ms and skittles are getting a makeover. candymaker mars is vowing to remove all artificial coloring from its products. the plan is to come up with healthier ingredients to create those vibrant colors over the next three years. and stul aastill. and still ahead on "world news tonight," it is almost time here. we are just waiting for the candidates to take the stage, so, what happens when they're all backstage? we go behind t scenes, when we come back. > d finally tonight, i iis me t treach my goals. so i liked when my doctor told me i may reach my blood sugar and a1c goals by activating what's within me. with once-weekly trulicity. trulicity is not insulin. it helps activate my body to do what it's supposed to do release its own insulin. trulicity responds when my blood sug rises. i take it once a week, and it works 24/7. it comes in an easy-to-use pen

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even step into this spotlight. the stage is set, the finishing touches complete. but you already knew all that. here's'shat you don't know. underneath those podiums -- we are in the athletic center of st. anselm. the candidates won't cross paths until they're ready to take the stage. take a look at this. this is one of theheandidates' dressing roomsms you can see whose it is right here. just to burn off a little bit of steam before a debate, i don't know, maybe he wants to ride an exercise bike? long hallways. arrows telling the candidates where to go. this is a racketball court. candidates will be in there -- no, no candidates will be in there. here we go. the long walk to that stage. >> guys ready? >> and then, all those rivals standing there, waiting side by side until their name is called. >> donald trump. >> it's rehearsal t te today. the fill-ins, students playing the role of a lifetime. as you can see, this is not the real jeb bush. i mean -- maybe.

>> i got the kneeldowow though. >> let's see. >> i got it down. i'm always staring at marco when he says something, too. >> you totally have it down. that's really good. let's see, best chris christie face? the whole gang is here. oh, hi david and martha. ready to go. and it all starts -- >> applause, applause. still applause. and -- go. >> the wholeang is, indeed, here. it does start right here in just a matter of moments. you can hear this hall buzzing behind me. the fireworks about to begin. i'm cecilia vega in new hampshire. thank you so much for watching. and w w will see you r rht back herereoon.one person went to the hospital after a domestic dispute ended in gunfire in cedar rapids. it'sake-or-break time for republican esidential candidates, with the new hampshire primary only 3

tonight's g-o-p debate. dancing, music and the end is near for dancers at the university of iowa. students have only an hour to go in this year's dance marathon. you're watching kcrg-tv9. now/ from your 24 hour news source, this is kcrg-tv9 news at 6. one person went to the hospital after a shooting this morning in cedar rapids. the linn county sheriff's office responded to a domestic disturbance at 14-14 sisley grove road northwest around 3:30. emergency responders found one man with two gunshot wounds at the home. ap an ambulance took him to mercy hospital in cedar rapids, and from there, to the university of iowa hospitals and clinics. we're working to get an update on his condition. the suspect in the shooting was detained at the home and questioned by linn county deputies this morning. the sheriff's office