his is "nightline." >> tonight, down to the wire. on the eve of the new hampshire primary -- >> he's a totalald trump bashing a rival but also voicing a surprising lack of confidence. >> who knows what's going to happen? >> a once-surging marco rubioed 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 off his big win in super bowl 50, peyton manning heads to disneyland. but is this his land victory at do you i do if you can't afford the fireworks

we travel deep into china to witness a bngerous tradition. but first the "nightline 5." ogue with the power and performance of our intuitive all-wheel drive. get a $199 lease on the 2016 nissan rogue.just 60

good evening. in just hours voters in new

the polls to provide the nextt as been a truly unbelievable campaign. the candidates including a surprisingly modest donald trump were scrambling for votes. some of these hopefuls know they may not make it past tomorrow.t is out on the trail tonight. >> this is now crunch time. >> reporter: it may be the first in the nation primary. tomorrow! >> reporter: new hampshire is also a last chance for some. >> donald trump organizes his campaign around disparaging ter: this past week we've seen feuds, unexpected >> vicious trolling. >> reporter: the music you almost expect to hear as the candidatesnd. >> reporter: call it "game of thrones: new hampshire edition." die. tune in this timethere's sure to be blood on the floor. >> the time is here. >> reporter: saturday's abc news debate was the red wedding for

iowa as the candidate. >> senator rubio. >> let's dispel with this fiction that barack obama doesn't know what he's doing. he knows exactly what he's ter: chris christie stuck in the shiv. >> i like marco rue i don't. he's a smart person and a good guy but he does not have the experience to be president ofnd 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 this.h 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 christiest 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 speech that is his advisers gave him. >> reporter: then astonishingly rubio repeated the line again. >> this notion that barack obama doesn't know what he's doing is

>> there it is, there it is, the25-second speech. >> that's the reason why -- >> there it is, everybody. >> reporter: marco momentum done. the following morning there were robots outside rubio's first what's your new talking point? >> our new talking point is marco rubio needs new talking points. oters skeptical. >> i'm grateful to you for being here today. >> marco should have been better prepared. >> he's a young senator just like obama was. i'm not so sure he's ready. >> omething like this raises questions about his experience? >> yes, yes, it does. >> the one i thought did a great job was jeb bush. >> reporter:ou 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 lot of flack this morning for getting stuck in his talking points yesterday. is he only a sound bite geek? is that what it says?

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 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: and christie, he's in a great mood. >> good to see you. >> reporter: his town hall meeting at an exeter bowling alley and bar wasrnor, any second thoughts about your treatment of marco rubio last night? >> second thoughts? what i would have done twice. >> reporter: christie, kasich, , 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. polls, bernie sanders and donald trump, they've got this in the bag.

as both of them would say the yuge question, is whether theupport 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 >> reporter: the sanders campaign says it's prepared. >> we've got folks throughout all day just making hundreds and hundreds and hundreds of calls. 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,e sanders with a better than 99% chance of winning new hampshire. >> i will believe that on wednesday morning. i'll believe that wednesday ay. >> we're trying very hard not to take anything for granted. >> reporter: some sanders supporters have taken places. in iowa some of his young supporters, presumably single,

urging prospective dates to bernie. this weekend bernie sanders got a boost from "saturday night live." >> pretty -- pretty -- pretty -- pretty good. alongside his comedy doppelganger larry david. >> i am so sick of the 1% getting this preferential treatment.t shake disgusting hands. >> reporter: he did a sketch featuring a bernie version of "bern your enthusiasm."[ bleep ] -- >> i hope you all are going to vote tuesday, i hope i've earned your vote. >> reporter: the clinton campaign is pulling out all the stops.d, hillary clinton was even out there knocking on doors herself. >> how are you? oh my goodness! >> reporter: the history 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 supported2008, they're still

for bill clinton 25 years ago. now bill clinton is at time sounding angry. >> -- to defend hillary andexplain, why they supported her, have been subject to vicious trolling. >> reporter: this weekend, former secretary of state madeline all bright named and shamed women tempted to vote for sanders. >> just remember, there's a special place in hell for women who don't help each other.hought 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 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 freedom of choice. i have been with bernie since the beginning. i feel he's going to do right by the retirees, i think he's going to do right by the r: the first votes are now in. tomorrow there will be blood on the floor. a king may be crowned.

just a bit. but there could also be plot w heroes or villains. even a cliff hanger. as the 2016 "game of thrones" continues. i'm david wright for "nightline" in manchester., broncos qb peyton manning heads to disneyland to celebrate his big win at super bowl 50. what does he say about whether cleats? if you have moderate to severe rheumatoid arthritis like me... and you're talking to a rheumatologist about a biologic, this is humira. helping to relieve my pain and protect my joints from further damage. this is humira helping me reach for more.n prescribing humira for more than 10 years. humira works for many adults. it targets and helps to block a specific source of inflammation thats to ra symptoms. humira can lower your ability to fight infections, including tuberculosis. serious, sometimes fatal

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ning took a victory lap at disneyland after

ever to win a super bowl. now everybody's asking, has he played his last game?nelly. >> reporter: on the day after, peyton manning went to disney land. >> the game, the celebration 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.where beyonce was. >> reporter: peyton manning may be no stranger to ees. by his standards, super bowl 50 was not one of them. 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 old est quarterback ever

the underdog broncos beating cam newton's carolina panthers. but was that the last passear-old manning will ever throw? speculation about peyton's retirement heating up after he spoke these words two weeks ago to patriots coachk. captured on showtime's "inside the nfl." >> hey, listen. this might be my last rodeo. >> reporter: was manning's second super bowl victory his last rodeo? or 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 t 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 timesroll. man steerial on the field. on message off it. peyton manning has been pro football's plu-perfect ambassador, the nfl's greatr. >> there's always going to be consistency out of peyton

his professionalism says a lot about who he and is what he's done for the national football league. >> reporter: week after week for indianapolis colts and then with the broncos, orchestrating the thrilling moments that have sustained the sport's popularity. like the colts' super bowl 41 win in the rain. perennial pitchman. >> check out our new epic meats pizza. >> reporter: papa john. mastercard. do i really look like this 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 nning's a celebrity. he's bigger than a star. >> reporter: even crossing over on "saturday night live." showing agifts. >> i'll kill a snitch. i'm not saying i have, i'm not saying i haven't. you know the hilariously cynical

who idolized archie manning, a legendary r favorite football player? >> my dad. >> growing up i had my hero in my house. >> reporter: the mannings on their way to becoming aootball dynasty. >> are you going to be a football player when you grow up? >> uh-huh. >> the legacy of the manning family starts with their father, archie manning, who i playeds with the new orleans saints. he wasn'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. goodharacter made at home. when you think about the manning family it starts with archie, his beautiful wife, how they raised their children.s are going to be maybe professional quarterbacks one time in their lifetime and they've done that. >> reporter: peyton wouldty of tennessee before becoming the number one overall pick of the 1998 nfl draft.

with his arm and his mind. his presnap routine earning him the nickname the sheriff. putting up huge numbers even as his teams sometimes fell short in the postseason. eli manning won two super bowls of his own. peyton at last pulling even with his sibling, whose unusually dour demeanor set social media es like, when your brother brings home a better report card than you. peyton's own high-flying career has hit the occasional air pocket, teased for his during losses, and worse, his body taking a beating undergoing multiple surgeries in 2011 for what threatened to become a k injury. >> the doctors and i have been in good constant communication and we're on the same page. everything they're saying is everything's right on point, everything looks good. i'll be cleared and ready to go. that's >> reporter: and late last year, possible questions about that recovery. claims that an al jazeera

secret world of sports doping" employee and an indianapolis clinic. >> another time that i worked with peyton, him and his wife are coming after hours to get all the time we're sending growth hormone, all the time everywhere. >> reporter: manning vigorously denying any assertion he used i rotate between being angry, furious, but lly how i feel, sickened by it. >> have you ever used hgh or any performance-enhancing drugs? >> absolutely not. ab the al jazeera source would recant his statement in full. a rep for manning did confirm to "the washington post" that manning's wife ashley received a shipment of ays it is investigating. yet now as peyton ponders his next move his options abound. he remains the darling oferica, even giving

a postgame peck on the field. he could play one more season. perhaps with the rams moving to los angeles. and in of hollywood star power. or with growing evidence over the toll football takes on the mines minds and bodies of those whok away into the arms of his family, pro football's preeminent passer going long for good. for "nightline" i'mos angeles. next, we are on a journey to a remote place where celebrating the chinese new year ist but also very risky. [screaming]

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finally we're taking you the planet to a party that is as beautiful as it is dangerous.uff. >> reporter: in this remote corner of china, the night skylights up with a remarkable and unique kind of fireworks. few will ever get the chance to see them. these breath-taking and extreme pyrotechnic displaysn the lunar new year are made by brave blacksmiths hurling molten iron against a arks to rain down. when we travel to the village, celebrations were already under way.

beijing. the name means "warm springs." and you can tell,really cold. this is one of the blacksmin attraction. ow long does it take you to learn how to do that? metal. in 2,900-degree heat. region. during the performance the men are only protected by a sheepskin vest and a wide-brim

do you feel it's dang throw this burning metal up in the sky like that? do you ever get worried about it? >> reporter: that fire from the on still illuminate the entire town. this is the most beautiful kind of firework in the world? for bob woodruff. >> thank you, bob. we should say bob's story was an abc news digital feature.y downloading the abc news app. thank you for watching "nightline" tonight. tune into gma first thing in the morning. as always we are online 24/7 on our page and at abcnews.com.