you now that you been gone this is "nightline." >> tonight, down to the wire. on the eve of the new hampshire primary -- >> he's a total stiff, jeb bush. >> donald trump bashing a rival but also voicing a surprising lack of confidence. >> who knows what's going to happen? >> a once-surging marco rubio today criticized to his face by a voter. on the democratic side, bill clinton on the attack. >> vicious trolling -- >> >> plus -- >> being here today all makes for a very special 24 hours. >> fresh off hisig win in super bowl 50, peyton manning headso disneyland. but is this his land victory lap? would what do you i do if

for chinese new year? we travel deep into china to witness a beautiful but dangerous tradition. but first the "nightline 5." >> the nissan rogue with the power and performance of our intuitive all-wheel drive. get a $199 lease on the 2016

seconds. good evening.

hampshire will start heading to the polls to provide the next twist in what as been a truly unbelievable campaign. theandidates includingng surprisingly modest donald trump were scrambling for votes. some of these hopefuls know they may not make it past tomorrow. abc's david wright is out on the trail tonight. >> this is now crunch time. >> reporter: it may be the first in the nation primary. >> vote for me tomorrow! >> reporter: new hampshire is also a last chance for some. >> donald trump organizes his campaign around disparaging people. >> reporter: this past week we've seen feuds, unexpected alliances, and attacks. >> vicious trolling. >> reporter: the music you almost expect to hear as the candidates crisscross the land. >> reporter: call it "game of thrones: new hampshire edition." an epic battle, live free or die. tune in this time tomorrow and there's sure to be blood on the floor. >> the time is here.

debate was the red wedding for marco rubio who came in from iowa as the emerging consensusus candidatat >> senator rubio. >> let's dispel with this fiction that barack obama doesn't know what he's doing. doing. >> reporter: chris christie stuck in the shiv. >> i like marco rue i don't. he's a smart person and a good guy but he es not have the experience to be president of the united states and make these decisions. >> i think the experience is not just what you did but how it worked out. >> reporter: rubio fought back but listen closely. >> i would add th. let's dispel with this fiction that barack obama doesn't know what he's doing. he knows exactly what he's doing. he is trying to change this country. >> reporter: the repetition of that well-practiced line was all christie needed to twist the knife. >> that's what washington, d.c. does. the drive-by shot at the beginning with incorrect and incomplete information. and then the memorized 25-second advisers gave m. >> reporter: then astonishingly rubio repeated the line again.

doesn't know what he's doing is just not true -- >> there it is, there it is, the memorized 25-second speech. >> that's the reason why -- >>here it is, everybody. >> reporter: marco momentum done. the following morning there were robots outside rubio's first event. >> what's your new talking point? >> our new talking point is marco rubio needs new talking points. >> reporter: some of the voters skeptical. >> i'm grateful to you for being here today. >> marar should have been better prepared. >> he's a young senator just like obama was. i'm not so sure he's ready. >> interesting. so something like this raises question_ about his experience? >> yes, yes, it does. >> the one i thought did a great job was jeb bush. >> reporter: in salem -- >> thank you very much for coming. >> reporter: we caught up with governor bush. this hasn't been a great year for the house of bush. but he's hoping new hampshire will turn it around. >> your friend senator rubio has taken a lot of flack this morning for gettingng stuck in his talking points yesterday. is he only a soundite geek?

>> he is only sound bite deep in that debate. he's a substantial person. he's a gifted speaker. but he doesn't have a proven record. >> welcome to wyndham. >> reporter: governor john kasich is do or die in the granite state. he can't afford to be an also-ran. he's got a spring in his step too. >> i'm counting on you to help me if i'm president of the united states. what do you think of that? >> reporter:r:nd governor chris christie, he's in a great mood. >> good to see you. >> reporter: his town hall meetingt an exeter bowling alley and bar was packed. >> governor, any second thoughts about yourreatment of marco rubio last night? >> second thoughts? what i would have done twice. >> reporter: christie, kasich, bush, rubio, they'd be happy with second place, even a not too distant third. no secret who's strongly expected to win, just look at this crowd. if you believe the polls, bernie sanders and donald trump,

but the big question out there, as both of them would say the yuge question, is whether the enthusiastic support that they've been able to draw to their rallies will actually translate into as opposed tos. >> i'm a volunteer for bernie sanders, are you planning to vote in the democratic primary tomorrow? >> reporter: the sanders campaign says it's prepared. >> we've got folks throughout all day just making hundreds and hundreds and hundreds of calls. >> what is this space? >> i think this used to be a dentist's office. >> reporter: julia florence is sanders' new hampshire campaign director. >> i was looking at 5:38, they show bernie sanders with a better than 99% chance of winning new hampshire. >> i will believe that on wednesday morning. i'll believe that wednesday morning. >> okay. >> we're trying very hard not to take anything for granted. >> reporter: some sanders supportete have taken electioneering to new places. in iowa some of his young supporters, presumably single,

urging prospective dates to swipe right for bernie. this weekend bernie sanders got a boost from "saturday night live." >> pretty -- pretty -- pretty -- pretty good. >> reporter: appeang alongside his comedy doppelganger larry david. >> i am so sick of the 1% getting this preferential treatment. >> i do not s ske disgusting hands. >> reporter: he did a sketch featuring a bernie version of "bern your enthusiasm." >> you did some [ bleep ] -- >> i hope you all are going to vote tuesday, i hope i've earned >> reporter: the clinton campaign is pulling out all the stops. this weekend, hillary clinton was even out there knocking on doors herself. >> how are you? ohohy goodness! longngistory here in new hampshire. >> i was a supporter of your husband and i'm a supporter. >> reporter: they not only keep lists of people who supported

in touch with folks who voted for bill clinton 25 years ago. now bill clinton is at time sounding angry. >> -- to defend hillary and explain, just explain, why they supported her, have been subject to vicious trolling. >> reporter: this weekend, former secretary of state madeline all bright named and shamed women voters who might be tempted to vote for sanders. >> just remember, there's a special place in hell for women who don't help each other. >> reporter: a thought that doesn't go over well among women who do support sanders. >> does that make you feel guilty? >> not at all. i think that women support women that they want to support. >> you don't want to support hillary clinton? >> no, i don't. i absolutely do not. >> we still live in a country where it's a freedom off choice. i have been with bernie since e beginning. i feel he's going to do right by the retirees, i think he's going to do right by the kids. >> reporter: the first votes are now tomorrow there will be blood on

a king may be crowned. a queen may be cut down to size just a bit. but there could also be plot twists. new heroes or villains. even a cliff hanger. as the 2016 "game of thrones" continues. i'm david wright for "nightline" in manchester. >next, broncos qb peyton manning heads to disneyland to celebrate his big win at super bowl 50. what doe he say about whether it's time to hang up t cleats? if you have moderate to severe rheumatoid arthritis like me... and you're talking to a rheumatologist about a biologic, this is humira. this is humira lping to relieve my pain and protect my joints from further damage. this is humira helping me reach for more. doctors have been prescribing humira for more than 10 years. humira works for many adults. it targets and helps to block a specific source of inflammation that contrubutes to ra symptoms. humira can lower your ability to fight infections,

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victory lap at disneyland after becoming the oldest quarterback ever to win a super bowl. now everybody's asking, has he played his last game? here's abc's chris connelly. >> reporter: on the day after, peyton manning went to disney land. >> the game, the celebration after, being here today, all makes for a very special 24 hours. >> reporter: the 24 hours that began a few hundred miles north in santa clara, california. at levi's stadium. you know, where beyonce was. >> reporter: peyton manning may be no stranger to electrifying performances. by his standards, super bowl 50 was not one of them. his broncos set a new low for fewest yards gained by a winning team. >> and it's ealey who gets to him. >> reporter: but so what? he's the oldest qulk estest quarterback ever

the underdog broncos beating cam newton's carolina panthers. but was that the last pass the 39-year-old manning will ever throw? speculation about peyton's retirement heating up after he spe these words two weeks ago to patriots coach bill beliliick. captured o o showtime's "inside the nfl." >> hey, listen. this might be my last roroo. >> reporter: was manning's second super bowl victory his last rodeo? or just the latest ride in a hall of fame career? >> i'll take some time to reflect. i got a couple of priorities first. i want to go kiss my wife and my kids. i want to go hug my family. i'm going to drink a lot of budweiser tonight. i promise you that. >> reporter: after the cheers and the beers, the good times still roll. man steerial on the field. on message off peyton manning has been pro football's plu-perfect ambassador, the nfl's great entertainer.

consistency out of peyton manning. his professionalism says a lot about who he and is what he's doneor the national football league. >> reporter: week after week for 18 seasons with the indianapoli colts and then with the broncos, orchestrating the thrilling moments that have sustained the sport's popularity. like thecolts' super bowl 41 win in the rain. off the field a perennial pitchman. >> check out our new epic meats pizzb. >> reporter: papa john. mastcard. do i really look like this >> reporter: singing for nationwide. >> i've always told players, certain players are stars in our league. we know who they are. but there's a unique few that are celebrities. peyton manning's a celebrity. hehe bigger than a star. >> reporter: even crossing over on "saturday night live." showing a true pererrmer's comic gifts. >> i'll kill a snitch. i'm not saying i have, i'm not saying i haven't. you know what i mean. >> the hilariously cynical

who idolized archie manning, a legendary qb. >> who's your favorite football player? >> my dad. >> growing up i had my hero in my house. >> reporter: the mannings on their way to becoming a beloved nfl football dynasty. >> are you going to be a football player when you grow up? >> uh-huh. >> the legacy of the manning family starts with their fatherer archie manning, who i played against when he was with the new orleans saints. heasn't on a very good football team but he was an excellent quarterback. the apple doesn't fall far from the tree. i've always said this. good soup like character made at home. when you think about the manning family it starts with archie, his beautiful wife, how they raised their children. knowing that these guys are going to be maybe professional quarterbacks one t te in their lifetime and they've done that. >> reporter: peyton would dominate at university of tennessee before becoming the number one overall pick of the 1998 nfl draft.

with his arm and his mind. his meticulous presnap routine earning him the nickname the sheriff. putting up huge numbers even as his teams sometimes fell short in the postseason. while younger brother eli manning won two super bowls of his own. peyton at l lt pulling even w wh his sibling, whose unusually dour demeanor set social media athe blaze with memes like, when your brother brings hom a better reporttcard than you. peyton's own high-flying career has hit the occasional air pocket, teased for his manning face during losses, and worse, s body taking a beating undergoing multiple surgeries in 2011 for what threatened to become a career-endinin neck injury. >> the doctors and i have been in good constantommunication and we're on the samam page. evererhing they're saying is everything's right on point, everythingooks good. i'll be cleared and ready to go. that's encouraging to me. >> reporter: and late last year,

claims that an al jazeera documentary "the dark side: the secret world of sports doping" from a former employee and an indianapolis clinic. >> another time that i worked with peyton, him and his wife are coming after hours to get ivs and [ bleep ]. all the time we're sending growth hormone, all the time evererhere. >> reporor manningigorously denying any assertion he used hgh. >> i think i rotate between being angry, furious, but disgusted is really how i feel, sickened by it. >> have you ever used hgh or any performance-enhancing drugs? >> absolutely not. absolutely not. >> reporter: the al jazeera source would recant his statement in full. rep for manning did confirm to "the washington post" that manning's wife ashley received a shipment of medication. the nfl says it is investigating. yet now as peyton ponders his next move his options abnd. he remains the darling of

papa john found irjohn schneider a postgame peck on the field. he could play one more season. perhaps with the rams moving to los angeles. and in desperate need of hollywood star power. or with growing evidence over the toll football takes on the mines minds and bodies of those who plea it he coulddalk away into the arms of his fami, pro football's preeminent passer going long for good. for "nightline" i'm chris connelly in los angeles. next, we are on a journey to a remote place where celebrating the chinese new year is stunning to look at but also very risky.

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finally we're taking you to the other side of the planet to a party that is as beautiful as it is dangerous. here's abc's bob woodruff. >> reporter: in this remote corner of china, the night skylights up with a remarkable and unique kind of fireworks. few people in the world will ever get the chance to see them. these breath-taking and extreme pyrotechnic displays that welcome in the lunar new year are made by brave blacksmiths huhuing molten iron against a cold ll, causing sparks to rain down. when we travel to the village,

on a much smaller scale. this is five hours west of beijing. the name means "warm springs." and you can tell, whoo, this is really cold. is is one of the blalasmiths who puts on the main attractctn. >> how long does it take you to learn how to do that? >> reporter: first they melt the metal. in 2,900-degree heat. the warmeseslace in n e entire region. during the performance the men are only protected by a

hat. doou feel it's dangerous? to just throw this burning metal up in the sky like that? do you ever get worried about it? >> rorter: that fire from the centuries-old tradition still illuminate the entire town. this is the most beautiful kind of firework in the world? for "nightline," i'm bob woodruff. >> thank you, bob. we should say bob's story was an abc news digital feature. see more like it by downloading the abc news app. thank you for watching "n"nhtline" tonight. tune into a first thing in the morning. as always we are online 24/7 on

and at abcnews.com. thanks again for watching and good night. >> announcer: the following is a paid presentation for luminess air. take a look at this blemish. w you see it.

>> it is a azing.